Cleanups: renaming.
[e-mobility-charging-stations-simulator.git] / src / charging-station / ChargingStation.ts
index d43b975f0e248d8e06a08006704d2d268b9548cd..b6eb1f9a683fc7616a2cf27f3b5e0e7c1b50c8c9 100644 (file)
@@ -1,12 +1,13 @@
-import { AuthorizationStatus, StartTransactionRequest, StartTransactionResponse, StopTransactionReason, StopTransactionRequest, StopTransactionResponse } from '../types/ocpp/1.6/Transaction';
-import { BootNotificationResponse, ChangeConfigurationResponse, DefaultResponse, GetConfigurationResponse, HeartbeatResponse, RegistrationStatus, SetChargingProfileResponse, StatusNotificationResponse, UnlockConnectorResponse } from '../types/ocpp/1.6/RequestResponses';
+import { AuthorizationStatus, AuthorizeRequest, AuthorizeResponse, StartTransactionRequest, StartTransactionResponse, StopTransactionReason, StopTransactionRequest, StopTransactionResponse } from '../types/ocpp/1.6/Transaction';
+import { AvailabilityType, BootNotificationRequest, ChangeAvailabilityRequest, ChangeConfigurationRequest, ClearChargingProfileRequest, GetConfigurationRequest, HeartbeatRequest, IncomingRequestCommand, RemoteStartTransactionRequest, RemoteStopTransactionRequest, RequestCommand, ResetRequest, SetChargingProfileRequest, StatusNotificationRequest, UnlockConnectorRequest } from '../types/ocpp/1.6/Requests';
+import { BootNotificationResponse, ChangeAvailabilityResponse, ChangeConfigurationResponse, ClearChargingProfileResponse, DefaultResponse, GetConfigurationResponse, HeartbeatResponse, RegistrationStatus, SetChargingProfileResponse, StatusNotificationResponse, UnlockConnectorResponse } from '../types/ocpp/1.6/RequestResponses';
 import { ChargingProfile, ChargingProfilePurposeType } from '../types/ocpp/1.6/ChargingProfile';
 import ChargingStationConfiguration, { ConfigurationKey } from '../types/ChargingStationConfiguration';
-import ChargingStationTemplate, { PowerOutType } from '../types/ChargingStationTemplate';
+import ChargingStationTemplate, { PowerOutType, VoltageOut } from '../types/ChargingStationTemplate';
 import Connectors, { Connector } from '../types/Connectors';
 import { MeterValue, MeterValueLocation, MeterValueMeasurand, MeterValuePhase, MeterValueUnit, MeterValuesRequest, MeterValuesResponse, SampledValue } from '../types/ocpp/1.6/MeterValues';
 import { PerformanceObserver, performance } from 'perf_hooks';
-import Requests, { BootNotificationRequest, ChangeConfigurationRequest, GetConfigurationRequest, HeartbeatRequest, RemoteStartTransactionRequest, RemoteStopTransactionRequest, ResetRequest, SetChargingProfileRequest, StatusNotificationRequest, UnlockConnectorRequest } from '../types/ocpp/1.6/Requests';
+import Requests, { IncomingRequest, Request } from '../types/ocpp/Requests';
 import WebSocket, { MessageEvent } from 'ws';
 
 import AutomaticTransactionGenerator from './AutomaticTransactionGenerator';
@@ -19,7 +20,9 @@ import ElectricUtils from '../utils/ElectricUtils';
 import { ErrorType } from '../types/ocpp/ErrorType';
 import MeasurandValues from '../types/MeasurandValues';
 import { MessageType } from '../types/ocpp/MessageType';
+import { OCPPConfigurationKey } from '../types/ocpp/Configuration';
 import OCPPError from './OcppError';
+import { StandardParametersKey } from '../types/ocpp/1.6/Configuration';
 import Statistics from '../utils/Statistics';
 import Utils from '../utils/Utils';
 import { WebSocketCloseEventStatusCode } from '../types/WebSocket';
@@ -28,59 +31,62 @@ import fs from 'fs';
 import logger from '../utils/Logger';
 
 export default class ChargingStation {
-  private _index: number;
-  private _stationTemplateFile: string;
-  private _stationInfo: ChargingStationInfo;
-  private _bootNotificationRequest: BootNotificationRequest;
-  private _bootNotificationResponse: BootNotificationResponse;
-  private _connectors: Connectors;
-  private _configuration: ChargingStationConfiguration;
-  private _connectorsConfigurationHash: string;
-  private _supervisionUrl: string;
-  private _wsConnectionUrl: string;
-  private _wsConnection: WebSocket;
-  private _hasStopped: boolean;
-  private _hasSocketRestarted: boolean;
-  private _autoReconnectRetryCount: number;
-  private _requests: Requests;
-  private _messageQueue: string[];
-  private _automaticTransactionGeneration: AutomaticTransactionGenerator;
-  private _authorizedTags: string[];
-  private _heartbeatInterval: number;
-  private _heartbeatSetInterval: NodeJS.Timeout;
-  private _webSocketPingSetInterval: NodeJS.Timeout;
-  private _statistics: Statistics;
-  private _performanceObserver: PerformanceObserver;
+  public stationInfo: ChargingStationInfo;
+  public connectors: Connectors;
+  public statistics: Statistics;
+  private index: number;
+  private stationTemplateFile: string;
+  private bootNotificationRequest: BootNotificationRequest;
+  private bootNotificationResponse: BootNotificationResponse;
+  private configuration: ChargingStationConfiguration;
+  private connectorsConfigurationHash: string;
+  private supervisionUrl: string;
+  private wsConnectionUrl: string;
+  private wsConnection: WebSocket;
+  private hasStopped: boolean;
+  private hasSocketRestarted: boolean;
+  private autoReconnectRetryCount: number;
+  private requests: Requests;
+  private messageQueue: string[];
+  private automaticTransactionGeneration: AutomaticTransactionGenerator;
+  private authorizedTags: string[];
+  private heartbeatSetInterval: NodeJS.Timeout;
+  private webSocketPingSetInterval: NodeJS.Timeout;
+  private performanceObserver: PerformanceObserver;
 
   constructor(index: number, stationTemplateFile: string) {
-    this._index = index;
-    this._stationTemplateFile = stationTemplateFile;
-    this._connectors = {} as Connectors;
+    this.index = index;
+    this.stationTemplateFile = stationTemplateFile;
+    this.connectors = {} as Connectors;
     this._initialize();
 
-    this._hasStopped = false;
-    this._hasSocketRestarted = false;
-    this._autoReconnectRetryCount = 0;
+    this.hasStopped = false;
+    this.hasSocketRestarted = false;
+    this.autoReconnectRetryCount = 0;
 
-    this._requests = {} as Requests;
-    this._messageQueue = [] as string[];
+    this.requests = {} as Requests;
+    this.messageQueue = [] as string[];
 
-    this._authorizedTags = this._loadAndGetAuthorizedTags();
+    this.authorizedTags = this._getAuthorizedTags();
   }
 
-  _getStationName(stationTemplate: ChargingStationTemplate): string {
-    return stationTemplate.fixedName ? stationTemplate.baseName : stationTemplate.baseName + '-' + ('000000000' + this._index.toString()).substr(('000000000' + this._index.toString()).length - 4);
+  _getChargingStationId(stationTemplate: ChargingStationTemplate): string {
+    // In case of multiple instances: add instance index to charging station id
+    let instanceIndex = process.env.CF_INSTANCE_INDEX ? process.env.CF_INSTANCE_INDEX : 0;
+    instanceIndex = instanceIndex > 0 ? instanceIndex : '';
+    const idSuffix = stationTemplate.nameSuffix ? stationTemplate.nameSuffix : '';
+    return stationTemplate.fixedName ? stationTemplate.baseName : stationTemplate.baseName + '-' + instanceIndex.toString() + ('000000000' + this.index.toString()).substr(('000000000' + this.index.toString()).length - 4) + idSuffix;
   }
 
   _buildStationInfo(): ChargingStationInfo {
     let stationTemplateFromFile: ChargingStationTemplate;
     try {
       // Load template file
-      const fileDescriptor = fs.openSync(this._stationTemplateFile, 'r');
+      const fileDescriptor = fs.openSync(this.stationTemplateFile, 'r');
       stationTemplateFromFile = JSON.parse(fs.readFileSync(fileDescriptor, 'utf8')) as ChargingStationTemplate;
       fs.closeSync(fileDescriptor);
     } catch (error) {
-      logger.error('Template file ' + this._stationTemplateFile + ' loading error: %j', error);
+      logger.error('Template file ' + this.stationTemplateFile + ' loading error: %j', error);
       throw error;
     }
     const stationInfo: ChargingStationInfo = stationTemplateFromFile || {} as ChargingStationInfo;
@@ -90,120 +96,115 @@ export default class ChargingStation {
     } else {
       stationInfo.maxPower = stationTemplateFromFile.power as number;
     }
-    stationInfo.name = this._getStationName(stationTemplateFromFile);
+    stationInfo.chargingStationId = this._getChargingStationId(stationTemplateFromFile);
     stationInfo.resetTime = stationTemplateFromFile.resetTime ? stationTemplateFromFile.resetTime * 1000 : Constants.CHARGING_STATION_DEFAULT_RESET_TIME;
     return stationInfo;
   }
 
-  get stationInfo(): ChargingStationInfo {
-    return this._stationInfo;
-  }
-
   _initialize(): void {
-    this._stationInfo = this._buildStationInfo();
-    this._bootNotificationRequest = {
-      chargePointModel: this._stationInfo.chargePointModel,
-      chargePointVendor: this._stationInfo.chargePointVendor,
-      ...!Utils.isUndefined(this._stationInfo.chargeBoxSerialNumberPrefix) && { chargeBoxSerialNumber: this._stationInfo.chargeBoxSerialNumberPrefix },
-      ...!Utils.isUndefined(this._stationInfo.firmwareVersion) && { firmwareVersion: this._stationInfo.firmwareVersion },
+    this.stationInfo = this._buildStationInfo();
+    this.bootNotificationRequest = {
+      chargePointModel: this.stationInfo.chargePointModel,
+      chargePointVendor: this.stationInfo.chargePointVendor,
+      ...!Utils.isUndefined(this.stationInfo.chargeBoxSerialNumberPrefix) && { chargeBoxSerialNumber: this.stationInfo.chargeBoxSerialNumberPrefix },
+      ...!Utils.isUndefined(this.stationInfo.firmwareVersion) && { firmwareVersion: this.stationInfo.firmwareVersion },
     };
-    this._configuration = this._getTemplateChargingStationConfiguration();
-    this._supervisionUrl = this._getSupervisionURL();
-    this._wsConnectionUrl = this._supervisionUrl + '/' + this._stationInfo.name;
+    this.configuration = this._getTemplateChargingStationConfiguration();
+    this.supervisionUrl = this._getSupervisionURL();
+    this.wsConnectionUrl = this.supervisionUrl + '/' + this.stationInfo.chargingStationId;
     // Build connectors if needed
     const maxConnectors = this._getMaxNumberOfConnectors();
     if (maxConnectors <= 0) {
-      logger.warn(`${this._logPrefix()} Charging station template ${this._stationTemplateFile} with ${maxConnectors} connectors`);
+      logger.warn(`${this._logPrefix()} Charging station template ${this.stationTemplateFile} with ${maxConnectors} connectors`);
     }
     const templateMaxConnectors = this._getTemplateMaxNumberOfConnectors();
     if (templateMaxConnectors <= 0) {
-      logger.warn(`${this._logPrefix()} Charging station template ${this._stationTemplateFile} with no connector configuration`);
+      logger.warn(`${this._logPrefix()} Charging station template ${this.stationTemplateFile} with no connector configuration`);
     }
-    if (!this._stationInfo.Connectors[0]) {
-      logger.warn(`${this._logPrefix()} Charging station template ${this._stationTemplateFile} with no connector Id 0 configuration`);
+    if (!this.stationInfo.Connectors[0]) {
+      logger.warn(`${this._logPrefix()} Charging station template ${this.stationTemplateFile} with no connector Id 0 configuration`);
     }
     // Sanity check
-    if (maxConnectors > (this._stationInfo.Connectors[0] ? templateMaxConnectors - 1 : templateMaxConnectors) && !this._stationInfo.randomConnectors) {
-      logger.warn(`${this._logPrefix()} Number of connectors exceeds the number of connector configurations in template ${this._stationTemplateFile}, forcing random connector configurations affectation`);
-      this._stationInfo.randomConnectors = true;
+    if (maxConnectors > (this.stationInfo.Connectors[0] ? templateMaxConnectors - 1 : templateMaxConnectors) && !this.stationInfo.randomConnectors) {
+      logger.warn(`${this._logPrefix()} Number of connectors exceeds the number of connector configurations in template ${this.stationTemplateFile}, forcing random connector configurations affectation`);
+      this.stationInfo.randomConnectors = true;
     }
-    const connectorsConfigHash = crypto.createHash('sha256').update(JSON.stringify(this._stationInfo.Connectors) + maxConnectors.toString()).digest('hex');
+    const connectorsConfigHash = crypto.createHash('sha256').update(JSON.stringify(this.stationInfo.Connectors) + maxConnectors.toString()).digest('hex');
     // FIXME: Handle shrinking the number of connectors
-    if (!this._connectors || (this._connectors && this._connectorsConfigurationHash !== connectorsConfigHash)) {
-      this._connectorsConfigurationHash = connectorsConfigHash;
+    if (!this.connectors || (this.connectors && this.connectorsConfigurationHash !== connectorsConfigHash)) {
+      this.connectorsConfigurationHash = connectorsConfigHash;
       // Add connector Id 0
       let lastConnector = '0';
-      for (lastConnector in this._stationInfo.Connectors) {
-        if (Utils.convertToInt(lastConnector) === 0 && this._getUseConnectorId0() && this._stationInfo.Connectors[lastConnector]) {
-          this._connectors[lastConnector] = Utils.cloneObject<Connector>(this._stationInfo.Connectors[lastConnector]);
+      for (lastConnector in this.stationInfo.Connectors) {
+        if (Utils.convertToInt(lastConnector) === 0 && this._getUseConnectorId0() && this.stationInfo.Connectors[lastConnector]) {
+          this.connectors[lastConnector] = Utils.cloneObject<Connector>(this.stationInfo.Connectors[lastConnector]);
+          this.connectors[lastConnector].availability = AvailabilityType.OPERATIVE;
+          if (Utils.isUndefined(this.connectors[lastConnector]?.chargingProfiles)) {
+            this.connectors[lastConnector].chargingProfiles = [];
+          }
         }
       }
       // Generate all connectors
-      if ((this._stationInfo.Connectors[0] ? templateMaxConnectors - 1 : templateMaxConnectors) > 0) {
+      if ((this.stationInfo.Connectors[0] ? templateMaxConnectors - 1 : templateMaxConnectors) > 0) {
         for (let index = 1; index <= maxConnectors; index++) {
-          const randConnectorID = this._stationInfo.randomConnectors ? Utils.getRandomInt(Utils.convertToInt(lastConnector), 1) : index;
-          this._connectors[index] = Utils.cloneObject<Connector>(this._stationInfo.Connectors[randConnectorID]);
+          const randConnectorID = this.stationInfo.randomConnectors ? Utils.getRandomInt(Utils.convertToInt(lastConnector), 1) : index;
+          this.connectors[index] = Utils.cloneObject<Connector>(this.stationInfo.Connectors[randConnectorID]);
+          this.connectors[index].availability = AvailabilityType.OPERATIVE;
+          if (Utils.isUndefined(this.connectors[lastConnector]?.chargingProfiles)) {
+            this.connectors[index].chargingProfiles = [];
+          }
         }
       }
     }
     // Avoid duplication of connectors related information
-    delete this._stationInfo.Connectors;
+    delete this.stationInfo.Connectors;
     // Initialize transaction attributes on connectors
-    for (const connector in this._connectors) {
+    for (const connector in this.connectors) {
       if (Utils.convertToInt(connector) > 0 && !this.getConnector(Utils.convertToInt(connector)).transactionStarted) {
         this._initTransactionOnConnector(Utils.convertToInt(connector));
       }
     }
     // OCPP parameters
-    this._addConfigurationKey('NumberOfConnectors', this._getNumberOfConnectors().toString(), true);
-    if (!this._getConfigurationKey('MeterValuesSampledData')) {
-      this._addConfigurationKey('MeterValuesSampledData', MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER);
+    this._addConfigurationKey(StandardParametersKey.NumberOfConnectors, this._getNumberOfConnectors().toString(), true);
+    if (!this._getConfigurationKey(StandardParametersKey.MeterValuesSampledData)) {
+      this._addConfigurationKey(StandardParametersKey.MeterValuesSampledData, MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER);
     }
-    this._stationInfo.powerDivider = this._getPowerDivider();
+    this.stationInfo.powerDivider = this._getPowerDivider();
     if (this.getEnableStatistics()) {
-      this._statistics = Statistics.getInstance();
-      this._statistics.objName = this._stationInfo.name;
-      this._performanceObserver = new PerformanceObserver((list) => {
+      this.statistics = new Statistics(this.stationInfo.chargingStationId);
+      this.performanceObserver = new PerformanceObserver((list) => {
         const entry = list.getEntries()[0];
-        this._statistics.logPerformance(entry, Constants.ENTITY_CHARGING_STATION);
-        this._performanceObserver.disconnect();
+        this.statistics.logPerformance(entry, Constants.ENTITY_CHARGING_STATION);
+        this.performanceObserver.disconnect();
       });
     }
   }
 
-  get connectors(): Connectors {
-    return this._connectors;
-  }
-
-  get statistics(): Statistics {
-    return this._statistics;
-  }
-
   _logPrefix(): string {
-    return Utils.logPrefix(` ${this._stationInfo.name}:`);
+    return Utils.logPrefix(` ${this.stationInfo.chargingStationId}:`);
   }
 
   _isWebSocketOpen(): boolean {
-    return this._wsConnection?.readyState === WebSocket.OPEN;
+    return this.wsConnection?.readyState === WebSocket.OPEN;
   }
 
   _isRegistered(): boolean {
-    return this._bootNotificationResponse?.status === RegistrationStatus.ACCEPTED;
+    return this.bootNotificationResponse?.status === RegistrationStatus.ACCEPTED;
   }
 
   _getTemplateChargingStationConfiguration(): ChargingStationConfiguration {
-    return this._stationInfo.Configuration ? this._stationInfo.Configuration : {} as ChargingStationConfiguration;
+    return this.stationInfo.Configuration ? this.stationInfo.Configuration : {} as ChargingStationConfiguration;
   }
 
   _getAuthorizationFile(): string {
-    return this._stationInfo.authorizationFile && this._stationInfo.authorizationFile;
+    return this.stationInfo.authorizationFile && this.stationInfo.authorizationFile;
   }
 
   _getUseConnectorId0(): boolean {
-    return !Utils.isUndefined(this._stationInfo.useConnectorId0) ? this._stationInfo.useConnectorId0 : true;
+    return !Utils.isUndefined(this.stationInfo.useConnectorId0) ? this.stationInfo.useConnectorId0 : true;
   }
 
-  _loadAndGetAuthorizedTags(): string[] {
+  _getAuthorizedTags(): string[] {
     let authorizedTags: string[] = [];
     const authorizationFile = this._getAuthorizationFile();
     if (authorizationFile) {
@@ -217,28 +218,28 @@ export default class ChargingStation {
         throw error;
       }
     } else {
-      logger.info(this._logPrefix() + ' No authorization file given in template file ' + this._stationTemplateFile);
+      logger.info(this._logPrefix() + ' No authorization file given in template file ' + this.stationTemplateFile);
     }
     return authorizedTags;
   }
 
   getRandomTagId(): string {
-    const index = Math.floor(Math.random() * this._authorizedTags.length);
-    return this._authorizedTags[index];
+    const index = Math.floor(Math.random() * this.authorizedTags.length);
+    return this.authorizedTags[index];
   }
 
   hasAuthorizedTags(): boolean {
-    return !Utils.isEmptyArray(this._authorizedTags);
+    return !Utils.isEmptyArray(this.authorizedTags);
   }
 
   getEnableStatistics(): boolean {
-    return !Utils.isUndefined(this._stationInfo.enableStatistics) ? this._stationInfo.enableStatistics : true;
+    return !Utils.isUndefined(this.stationInfo.enableStatistics) ? this.stationInfo.enableStatistics : true;
   }
 
   _getNumberOfPhases(): number {
     switch (this._getPowerOutType()) {
       case PowerOutType.AC:
-        return !Utils.isUndefined(this._stationInfo.numberOfPhases) ? this._stationInfo.numberOfPhases : 3;
+        return !Utils.isUndefined(this.stationInfo.numberOfPhases) ? this.stationInfo.numberOfPhases : 3;
       case PowerOutType.DC:
         return 0;
     }
@@ -246,7 +247,7 @@ export default class ChargingStation {
 
   _getNumberOfRunningTransactions(): number {
     let trxCount = 0;
-    for (const connector in this._connectors) {
+    for (const connector in this.connectors) {
       if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector)).transactionStarted) {
         trxCount++;
       }
@@ -256,8 +257,8 @@ export default class ChargingStation {
 
   // 0 for disabling
   _getConnectionTimeout(): number {
-    if (!Utils.isUndefined(this._stationInfo.connectionTimeout)) {
-      return this._stationInfo.connectionTimeout;
+    if (!Utils.isUndefined(this.stationInfo.connectionTimeout)) {
+      return this.stationInfo.connectionTimeout;
     }
     if (!Utils.isUndefined(Configuration.getConnectionTimeout())) {
       return Configuration.getConnectionTimeout();
@@ -267,8 +268,8 @@ export default class ChargingStation {
 
   // -1 for unlimited, 0 for disabling
   _getAutoReconnectMaxRetries(): number {
-    if (!Utils.isUndefined(this._stationInfo.autoReconnectMaxRetries)) {
-      return this._stationInfo.autoReconnectMaxRetries;
+    if (!Utils.isUndefined(this.stationInfo.autoReconnectMaxRetries)) {
+      return this.stationInfo.autoReconnectMaxRetries;
     }
     if (!Utils.isUndefined(Configuration.getAutoReconnectMaxRetries())) {
       return Configuration.getAutoReconnectMaxRetries();
@@ -278,65 +279,73 @@ export default class ChargingStation {
 
   // 0 for disabling
   _getRegistrationMaxRetries(): number {
-    if (!Utils.isUndefined(this._stationInfo.registrationMaxRetries)) {
-      return this._stationInfo.registrationMaxRetries;
+    if (!Utils.isUndefined(this.stationInfo.registrationMaxRetries)) {
+      return this.stationInfo.registrationMaxRetries;
     }
     return -1;
   }
 
   _getPowerDivider(): number {
     let powerDivider = this._getNumberOfConnectors();
-    if (this._stationInfo.powerSharedByConnectors) {
+    if (this.stationInfo.powerSharedByConnectors) {
       powerDivider = this._getNumberOfRunningTransactions();
     }
     return powerDivider;
   }
 
   getConnector(id: number): Connector {
-    return this._connectors[id];
+    return this.connectors[id];
+  }
+
+  _isConnectorAvailable(id: number): boolean {
+    return this.getConnector(id).availability === AvailabilityType.OPERATIVE;
+  }
+
+  _isChargingStationAvailable(): boolean {
+    return this.getConnector(0).availability === AvailabilityType.OPERATIVE;
   }
 
   _getTemplateMaxNumberOfConnectors(): number {
-    return Object.keys(this._stationInfo.Connectors).length;
+    return Object.keys(this.stationInfo.Connectors).length;
   }
 
   _getMaxNumberOfConnectors(): number {
     let maxConnectors = 0;
-    if (!Utils.isEmptyArray(this._stationInfo.numberOfConnectors)) {
-      const numberOfConnectors = this._stationInfo.numberOfConnectors as number[];
+    if (!Utils.isEmptyArray(this.stationInfo.numberOfConnectors)) {
+      const numberOfConnectors = this.stationInfo.numberOfConnectors as number[];
       // Distribute evenly the number of connectors
-      maxConnectors = numberOfConnectors[(this._index - 1) % numberOfConnectors.length];
-    } else if (!Utils.isUndefined(this._stationInfo.numberOfConnectors)) {
-      maxConnectors = this._stationInfo.numberOfConnectors as number;
+      maxConnectors = numberOfConnectors[(this.index - 1) % numberOfConnectors.length];
+    } else if (!Utils.isUndefined(this.stationInfo.numberOfConnectors)) {
+      maxConnectors = this.stationInfo.numberOfConnectors as number;
     } else {
-      maxConnectors = this._stationInfo.Connectors[0] ? this._getTemplateMaxNumberOfConnectors() - 1 : this._getTemplateMaxNumberOfConnectors();
+      maxConnectors = this.stationInfo.Connectors[0] ? this._getTemplateMaxNumberOfConnectors() - 1 : this._getTemplateMaxNumberOfConnectors();
     }
     return maxConnectors;
   }
 
   _getNumberOfConnectors(): number {
-    return this._connectors[0] ? Object.keys(this._connectors).length - 1 : Object.keys(this._connectors).length;
+    return this.connectors[0] ? Object.keys(this.connectors).length - 1 : Object.keys(this.connectors).length;
   }
 
   _getVoltageOut(): number {
-    const errMsg = `${this._logPrefix()} Unknown ${this._getPowerOutType()} powerOutType in template file ${this._stationTemplateFile}, cannot define default voltage out`;
+    const errMsg = `${this._logPrefix()} Unknown ${this._getPowerOutType()} powerOutType in template file ${this.stationTemplateFile}, cannot define default voltage out`;
     let defaultVoltageOut: number;
     switch (this._getPowerOutType()) {
       case PowerOutType.AC:
-        defaultVoltageOut = 230;
+        defaultVoltageOut = VoltageOut.VOLTAGE_230;
         break;
       case PowerOutType.DC:
-        defaultVoltageOut = 400;
+        defaultVoltageOut = VoltageOut.VOLTAGE_400;
         break;
       default:
         logger.error(errMsg);
         throw Error(errMsg);
     }
-    return !Utils.isUndefined(this._stationInfo.voltageOut) ? this._stationInfo.voltageOut : defaultVoltageOut;
+    return !Utils.isUndefined(this.stationInfo.voltageOut) ? this.stationInfo.voltageOut : defaultVoltageOut;
   }
 
   _getTransactionIdTag(transactionId: number): string {
-    for (const connector in this._connectors) {
+    for (const connector in this.connectors) {
       if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector)).transactionId === transactionId) {
         return this.getConnector(Utils.convertToInt(connector)).idTag;
       }
@@ -344,7 +353,7 @@ export default class ChargingStation {
   }
 
   _getTransactionMeterStop(transactionId: number): number {
-    for (const connector in this._connectors) {
+    for (const connector in this.connectors) {
       if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector)).transactionId === transactionId) {
         return this.getConnector(Utils.convertToInt(connector)).lastEnergyActiveImportRegisterValue;
       }
@@ -352,15 +361,15 @@ export default class ChargingStation {
   }
 
   _getPowerOutType(): PowerOutType {
-    return !Utils.isUndefined(this._stationInfo.powerOutType) ? this._stationInfo.powerOutType : PowerOutType.AC;
+    return !Utils.isUndefined(this.stationInfo.powerOutType) ? this.stationInfo.powerOutType : PowerOutType.AC;
   }
 
   _getSupervisionURL(): string {
-    const supervisionUrls = Utils.cloneObject<string | string[]>(this._stationInfo.supervisionURL ? this._stationInfo.supervisionURL : Configuration.getSupervisionURLs());
+    const supervisionUrls = Utils.cloneObject<string | string[]>(this.stationInfo.supervisionURL ? this.stationInfo.supervisionURL : Configuration.getSupervisionURLs());
     let indexUrl = 0;
     if (!Utils.isEmptyArray(supervisionUrls)) {
       if (Configuration.getDistributeStationsToTenantsEqually()) {
-        indexUrl = this._index % supervisionUrls.length;
+        indexUrl = this.index % supervisionUrls.length;
       } else {
         // Get a random url
         indexUrl = Math.floor(Math.random() * supervisionUrls.length);
@@ -371,16 +380,27 @@ export default class ChargingStation {
   }
 
   _getReconnectExponentialDelay(): boolean {
-    return !Utils.isUndefined(this._stationInfo.reconnectExponentialDelay) ? this._stationInfo.reconnectExponentialDelay : false;
+    return !Utils.isUndefined(this.stationInfo.reconnectExponentialDelay) ? this.stationInfo.reconnectExponentialDelay : false;
+  }
+
+  _getHeartbeatInterval(): number {
+    const HeartbeatInterval = this._getConfigurationKey(StandardParametersKey.HeartbeatInterval);
+    if (HeartbeatInterval) {
+      return Utils.convertToInt(HeartbeatInterval.value) * 1000;
+    }
+    const HeartBeatInterval = this._getConfigurationKey(StandardParametersKey.HeartBeatInterval);
+    if (HeartBeatInterval) {
+      return Utils.convertToInt(HeartBeatInterval.value) * 1000;
+    }
   }
 
   _getAuthorizeRemoteTxRequests(): boolean {
-    const authorizeRemoteTxRequests = this._getConfigurationKey('AuthorizeRemoteTxRequests');
+    const authorizeRemoteTxRequests = this._getConfigurationKey(StandardParametersKey.AuthorizeRemoteTxRequests);
     return authorizeRemoteTxRequests ? Utils.convertToBoolean(authorizeRemoteTxRequests.value) : false;
   }
 
   _getLocalAuthListEnabled(): boolean {
-    const localAuthListEnabled = this._getConfigurationKey('LocalAuthListEnabled');
+    const localAuthListEnabled = this._getConfigurationKey(StandardParametersKey.LocalAuthListEnabled);
     return localAuthListEnabled ? Utils.convertToBoolean(localAuthListEnabled.value) : false;
   }
 
@@ -390,16 +410,16 @@ export default class ChargingStation {
     // Start heartbeat
     this._startHeartbeat();
     // Initialize connectors status
-    for (const connector in this._connectors) {
+    for (const connector in this.connectors) {
       if (Utils.convertToInt(connector) === 0) {
         continue;
-      } else if (!this._hasStopped && !this.getConnector(Utils.convertToInt(connector)).status && this.getConnector(Utils.convertToInt(connector)).bootStatus) {
+      } else if (!this.hasStopped && !this.getConnector(Utils.convertToInt(connector))?.status && this.getConnector(Utils.convertToInt(connector))?.bootStatus) {
         // Send status in template at startup
         await this.sendStatusNotification(Utils.convertToInt(connector), this.getConnector(Utils.convertToInt(connector)).bootStatus);
-      } else if (this._hasStopped && this.getConnector(Utils.convertToInt(connector)).bootStatus) {
+      } else if (this.hasStopped && this.getConnector(Utils.convertToInt(connector))?.bootStatus) {
         // Send status in template after reset
         await this.sendStatusNotification(Utils.convertToInt(connector), this.getConnector(Utils.convertToInt(connector)).bootStatus);
-      } else if (!this._hasStopped && this.getConnector(Utils.convertToInt(connector)).status) {
+      } else if (!this.hasStopped && this.getConnector(Utils.convertToInt(connector))?.status) {
         // Send previous status at template reload
         await this.sendStatusNotification(Utils.convertToInt(connector), this.getConnector(Utils.convertToInt(connector)).status);
       } else {
@@ -408,16 +428,16 @@ export default class ChargingStation {
       }
     }
     // Start the ATG
-    if (this._stationInfo.AutomaticTransactionGenerator.enable) {
-      if (!this._automaticTransactionGeneration) {
-        this._automaticTransactionGeneration = new AutomaticTransactionGenerator(this);
+    if (this.stationInfo.AutomaticTransactionGenerator.enable) {
+      if (!this.automaticTransactionGeneration) {
+        this.automaticTransactionGeneration = new AutomaticTransactionGenerator(this);
       }
-      if (this._automaticTransactionGeneration.timeToStop) {
-        this._automaticTransactionGeneration.start();
+      if (this.automaticTransactionGeneration.timeToStop) {
+        this.automaticTransactionGeneration.start();
       }
     }
     if (this.getEnableStatistics()) {
-      this._statistics.start();
+      this.statistics.start();
     }
   }
 
@@ -427,12 +447,12 @@ export default class ChargingStation {
     // Stop heartbeat
     this._stopHeartbeat();
     // Stop the ATG
-    if (this._stationInfo.AutomaticTransactionGenerator.enable &&
-      this._automaticTransactionGeneration &&
-      !this._automaticTransactionGeneration.timeToStop) {
-      await this._automaticTransactionGeneration.stop(reason);
+    if (this.stationInfo.AutomaticTransactionGenerator.enable &&
+      this.automaticTransactionGeneration &&
+      !this.automaticTransactionGeneration.timeToStop) {
+      await this.automaticTransactionGeneration.stop(reason);
     } else {
-      for (const connector in this._connectors) {
+      for (const connector in this.connectors) {
         if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector)).transactionStarted) {
           await this.sendStopTransaction(this.getConnector(Utils.convertToInt(connector)).transactionId, reason);
         }
@@ -441,15 +461,15 @@ export default class ChargingStation {
   }
 
   _startWebSocketPing(): void {
-    const webSocketPingInterval: number = this._getConfigurationKey('WebSocketPingInterval') ? Utils.convertToInt(this._getConfigurationKey('WebSocketPingInterval').value) : 0;
-    if (webSocketPingInterval > 0 && !this._webSocketPingSetInterval) {
-      this._webSocketPingSetInterval = setInterval(() => {
+    const webSocketPingInterval: number = this._getConfigurationKey(StandardParametersKey.WebSocketPingInterval) ? Utils.convertToInt(this._getConfigurationKey(StandardParametersKey.WebSocketPingInterval).value) : 0;
+    if (webSocketPingInterval > 0 && !this.webSocketPingSetInterval) {
+      this.webSocketPingSetInterval = setInterval(() => {
         if (this._isWebSocketOpen()) {
-          this._wsConnection.ping((): void => { });
+          this.wsConnection.ping((): void => { });
         }
       }, webSocketPingInterval * 1000);
       logger.info(this._logPrefix() + ' WebSocket ping started every ' + Utils.secondsToHHMMSS(webSocketPingInterval));
-    } else if (this._webSocketPingSetInterval) {
+    } else if (this.webSocketPingSetInterval) {
       logger.info(this._logPrefix() + ' WebSocket ping every ' + Utils.secondsToHHMMSS(webSocketPingInterval) + ' already started');
     } else {
       logger.error(`${this._logPrefix()} WebSocket ping interval set to ${webSocketPingInterval ? Utils.secondsToHHMMSS(webSocketPingInterval) : webSocketPingInterval}, not starting the WebSocket ping`);
@@ -457,9 +477,9 @@ export default class ChargingStation {
   }
 
   _stopWebSocketPing(): void {
-    if (this._webSocketPingSetInterval) {
-      clearInterval(this._webSocketPingSetInterval);
-      this._webSocketPingSetInterval = null;
+    if (this.webSocketPingSetInterval) {
+      clearInterval(this.webSocketPingSetInterval);
+      this.webSocketPingSetInterval = null;
     }
   }
 
@@ -471,22 +491,22 @@ export default class ChargingStation {
   }
 
   _startHeartbeat(): void {
-    if (this._heartbeatInterval && this._heartbeatInterval > 0 && !this._heartbeatSetInterval) {
-      this._heartbeatSetInterval = setInterval(async () => {
+    if (this._getHeartbeatInterval() && this._getHeartbeatInterval() > 0 && !this.heartbeatSetInterval) {
+      this.heartbeatSetInterval = setInterval(async () => {
         await this.sendHeartbeat();
-      }, this._heartbeatInterval);
-      logger.info(this._logPrefix() + ' Heartbeat started every ' + Utils.milliSecondsToHHMMSS(this._heartbeatInterval));
-    } else if (this._heartbeatSetInterval) {
-      logger.info(this._logPrefix() + ' Heartbeat every ' + Utils.milliSecondsToHHMMSS(this._heartbeatInterval) + ' already started');
+      }, this._getHeartbeatInterval());
+      logger.info(this._logPrefix() + ' Heartbeat started every ' + Utils.milliSecondsToHHMMSS(this._getHeartbeatInterval()));
+    } else if (this.heartbeatSetInterval) {
+      logger.info(this._logPrefix() + ' Heartbeat every ' + Utils.milliSecondsToHHMMSS(this._getHeartbeatInterval()) + ' already started');
     } else {
-      logger.error(`${this._logPrefix()} Heartbeat interval set to ${this._heartbeatInterval ? Utils.milliSecondsToHHMMSS(this._heartbeatInterval) : this._heartbeatInterval}, not starting the heartbeat`);
+      logger.error(`${this._logPrefix()} Heartbeat interval set to ${this._getHeartbeatInterval() ? Utils.milliSecondsToHHMMSS(this._getHeartbeatInterval()) : this._getHeartbeatInterval()}, not starting the heartbeat`);
     }
   }
 
   _stopHeartbeat(): void {
-    if (this._heartbeatSetInterval) {
-      clearInterval(this._heartbeatSetInterval);
-      this._heartbeatSetInterval = null;
+    if (this.heartbeatSetInterval) {
+      clearInterval(this.heartbeatSetInterval);
+      this.heartbeatSetInterval = null;
     }
   }
 
@@ -498,12 +518,11 @@ export default class ChargingStation {
   }
 
   _startAuthorizationFileMonitoring(): void {
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    fs.watchFile(this._getAuthorizationFile(), (current, previous) => {
+    fs.watch(this._getAuthorizationFile()).on('change', (e) => {
       try {
         logger.debug(this._logPrefix() + ' Authorization file ' + this._getAuthorizationFile() + ' have changed, reload');
-        // Initialize _authorizedTags
-        this._authorizedTags = this._loadAndGetAuthorizedTags();
+        // Initialize authorizedTags
+        this.authorizedTags = this._getAuthorizedTags();
       } catch (error) {
         logger.error(this._logPrefix() + ' Authorization file monitoring error: %j', error);
       }
@@ -511,15 +530,24 @@ export default class ChargingStation {
   }
 
   _startStationTemplateFileMonitoring(): void {
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    fs.watchFile(this._stationTemplateFile, (current, previous) => {
+    fs.watch(this.stationTemplateFile).on('change', (e) => {
       try {
-        logger.debug(this._logPrefix() + ' Template file ' + this._stationTemplateFile + ' have changed, reload');
+        logger.debug(this._logPrefix() + ' Template file ' + this.stationTemplateFile + ' have changed, reload');
         // Initialize
         this._initialize();
-        if (!this._stationInfo.AutomaticTransactionGenerator.enable &&
-          this._automaticTransactionGeneration) {
-          this._automaticTransactionGeneration.stop().catch(() => { });
+        // Stop the ATG
+        if (!this.stationInfo.AutomaticTransactionGenerator.enable &&
+          this.automaticTransactionGeneration) {
+          this.automaticTransactionGeneration.stop().catch(() => { });
+        }
+        // Start the ATG
+        if (this.stationInfo.AutomaticTransactionGenerator.enable) {
+          if (!this.automaticTransactionGeneration) {
+            this.automaticTransactionGeneration = new AutomaticTransactionGenerator(this);
+          }
+          if (this.automaticTransactionGeneration.timeToStop) {
+            this.automaticTransactionGeneration.start();
+          }
         }
         // FIXME?: restart heartbeat and WebSocket ping when their interval values have changed
       } catch (error) {
@@ -529,10 +557,18 @@ export default class ChargingStation {
   }
 
   _startMeterValues(connectorId: number, interval: number): void {
-    if (!this.getConnector(connectorId).transactionStarted) {
+    if (connectorId === 0) {
+      logger.error(`${this._logPrefix()} Trying to start MeterValues on connector Id ${connectorId.toString()}`);
+      return;
+    }
+    if (!this.getConnector(connectorId)) {
+      logger.error(`${this._logPrefix()} Trying to start MeterValues on non existing connector Id ${connectorId.toString()}`);
+      return;
+    }
+    if (!this.getConnector(connectorId)?.transactionStarted) {
       logger.error(`${this._logPrefix()} Trying to start MeterValues on connector Id ${connectorId} with no transaction started`);
       return;
-    } else if (this.getConnector(connectorId).transactionStarted && !this.getConnector(connectorId).transactionId) {
+    } else if (this.getConnector(connectorId)?.transactionStarted && !this.getConnector(connectorId)?.transactionId) {
       logger.error(`${this._logPrefix()} Trying to start MeterValues on connector Id ${connectorId} with no transaction id`);
       return;
     }
@@ -540,7 +576,7 @@ export default class ChargingStation {
       this.getConnector(connectorId).transactionSetInterval = setInterval(async () => {
         if (this.getEnableStatistics()) {
           const sendMeterValues = performance.timerify(this.sendMeterValues);
-          this._performanceObserver.observe({
+          this.performanceObserver.observe({
             entryTypes: ['function'],
           });
           await sendMeterValues(connectorId, interval, this);
@@ -549,7 +585,7 @@ export default class ChargingStation {
         }
       }, interval);
     } else {
-      logger.error(`${this._logPrefix()} Charging station MeterValueSampleInterval configuration set to ${Utils.milliSecondsToHHMMSS(interval)}, not sending MeterValues`);
+      logger.error(`${this._logPrefix()} Charging station ${StandardParametersKey.MeterValueSampleInterval} configuration set to ${Utils.milliSecondsToHHMMSS(interval)}, not sending MeterValues`);
     }
   }
 
@@ -561,10 +597,10 @@ export default class ChargingStation {
       options.handshakeTimeout = this._getConnectionTimeout() * 1000;
     }
     if (this._isWebSocketOpen() && forceCloseOpened) {
-      this._wsConnection.close();
+      this.wsConnection.close();
     }
-    this._wsConnection = new WebSocket(this._wsConnectionUrl, 'ocpp' + Constants.OCPP_VERSION_16, options);
-    logger.info(this._logPrefix() + ' Will communicate through URL ' + this._supervisionUrl);
+    this.wsConnection = new WebSocket(this.wsConnectionUrl, 'ocpp' + Constants.OCPP_VERSION_16, options);
+    logger.info(this._logPrefix() + ' Will communicate through URL ' + this.supervisionUrl);
   }
 
   start(): void {
@@ -574,85 +610,85 @@ export default class ChargingStation {
     // Monitor station template file
     this._startStationTemplateFileMonitoring();
     // Handle Socket incoming messages
-    this._wsConnection.on('message', this.onMessage.bind(this));
+    this.wsConnection.on('message', this.onMessage.bind(this));
     // Handle Socket error
-    this._wsConnection.on('error', this.onError.bind(this));
+    this.wsConnection.on('error', this.onError.bind(this));
     // Handle Socket close
-    this._wsConnection.on('close', this.onClose.bind(this));
+    this.wsConnection.on('close', this.onClose.bind(this));
     // Handle Socket opening connection
-    this._wsConnection.on('open', this.onOpen.bind(this));
+    this.wsConnection.on('open', this.onOpen.bind(this));
     // Handle Socket ping
-    this._wsConnection.on('ping', this.onPing.bind(this));
+    this.wsConnection.on('ping', this.onPing.bind(this));
     // Handle Socket pong
-    this._wsConnection.on('pong', this.onPong.bind(this));
+    this.wsConnection.on('pong', this.onPong.bind(this));
   }
 
   async stop(reason: StopTransactionReason = StopTransactionReason.NONE): Promise<void> {
     // Stop message sequence
     await this._stopMessageSequence(reason);
-    for (const connector in this._connectors) {
+    for (const connector in this.connectors) {
       if (Utils.convertToInt(connector) > 0) {
         await this.sendStatusNotification(Utils.convertToInt(connector), ChargePointStatus.UNAVAILABLE);
       }
     }
     if (this._isWebSocketOpen()) {
-      this._wsConnection.close();
+      this.wsConnection.close();
     }
-    this._bootNotificationResponse = null;
-    this._hasStopped = true;
+    this.bootNotificationResponse = null;
+    this.hasStopped = true;
   }
 
   async _reconnect(error): Promise<void> {
     // Stop heartbeat
     this._stopHeartbeat();
     // Stop the ATG if needed
-    if (this._stationInfo.AutomaticTransactionGenerator.enable &&
-      this._stationInfo.AutomaticTransactionGenerator.stopOnConnectionFailure &&
-      this._automaticTransactionGeneration &&
-      !this._automaticTransactionGeneration.timeToStop) {
-      this._automaticTransactionGeneration.stop().catch(() => { });
-    }
-    if (this._autoReconnectRetryCount < this._getAutoReconnectMaxRetries() || this._getAutoReconnectMaxRetries() === -1) {
-      this._autoReconnectRetryCount++;
-      const reconnectDelay = (this._getReconnectExponentialDelay() ? Utils.exponentialDelay(this._autoReconnectRetryCount) : this._getConnectionTimeout() * 1000);
+    if (this.stationInfo.AutomaticTransactionGenerator.enable &&
+      this.stationInfo.AutomaticTransactionGenerator.stopOnConnectionFailure &&
+      this.automaticTransactionGeneration &&
+      !this.automaticTransactionGeneration.timeToStop) {
+      this.automaticTransactionGeneration.stop().catch(() => { });
+    }
+    if (this.autoReconnectRetryCount < this._getAutoReconnectMaxRetries() || this._getAutoReconnectMaxRetries() === -1) {
+      this.autoReconnectRetryCount++;
+      const reconnectDelay = (this._getReconnectExponentialDelay() ? Utils.exponentialDelay(this.autoReconnectRetryCount) : this._getConnectionTimeout() * 1000);
       logger.error(`${this._logPrefix()} Socket: connection retry in ${Utils.roundTo(reconnectDelay, 2)}ms, timeout ${reconnectDelay - 100}ms`);
       await Utils.sleep(reconnectDelay);
-      logger.error(this._logPrefix() + ' Socket: reconnecting try #' + this._autoReconnectRetryCount.toString());
+      logger.error(this._logPrefix() + ' Socket: reconnecting try #' + this.autoReconnectRetryCount.toString());
       this._openWSConnection({ handshakeTimeout: reconnectDelay - 100 });
-      this._hasSocketRestarted = true;
+      this.hasSocketRestarted = true;
     } else if (this._getAutoReconnectMaxRetries() !== -1) {
-      logger.error(`${this._logPrefix()} Socket reconnect failure: max retries reached (${this._autoReconnectRetryCount}) or retry disabled (${this._getAutoReconnectMaxRetries()})`);
+      logger.error(`${this._logPrefix()} Socket reconnect failure: max retries reached (${this.autoReconnectRetryCount}) or retry disabled (${this._getAutoReconnectMaxRetries()})`);
     }
   }
 
   async onOpen(): Promise<void> {
-    logger.info(`${this._logPrefix()} Is connected to server through ${this._wsConnectionUrl}`);
+    logger.info(`${this._logPrefix()} Is connected to server through ${this.wsConnectionUrl}`);
     if (!this._isRegistered()) {
       // Send BootNotification
       let registrationRetryCount = 0;
       do {
-        this._bootNotificationResponse = await this.sendBootNotification();
+        this.bootNotificationResponse = await this.sendBootNotification();
         if (!this._isRegistered()) {
           registrationRetryCount++;
-          await Utils.sleep(this._bootNotificationResponse.interval * 1000);
+          await Utils.sleep(this.bootNotificationResponse?.interval ? this.bootNotificationResponse.interval * 1000 : Constants.OCPP_DEFAULT_BOOT_NOTIFICATION_INTERVAL);
         }
       } while (!this._isRegistered() && (registrationRetryCount <= this._getRegistrationMaxRetries() || this._getRegistrationMaxRetries() === -1));
     }
     if (this._isRegistered()) {
       await this._startMessageSequence();
-      if (this._hasSocketRestarted && this._isWebSocketOpen()) {
-        if (!Utils.isEmptyArray(this._messageQueue)) {
-          this._messageQueue.forEach((message, index) => {
-            this._messageQueue.splice(index, 1);
-            this._wsConnection.send(message);
+      if (this.hasSocketRestarted && this._isWebSocketOpen()) {
+        if (!Utils.isEmptyArray(this.messageQueue)) {
+          this.messageQueue.forEach((message, index) => {
+            this.messageQueue.splice(index, 1);
+            this.wsConnection.send(message);
           });
         }
       }
     } else {
       logger.error(`${this._logPrefix()} Registration failure: max retries reached (${this._getRegistrationMaxRetries()}) or retry disabled (${this._getRegistrationMaxRetries()})`);
     }
-    this._autoReconnectRetryCount = 0;
-    this._hasSocketRestarted = false;
+    this.autoReconnectRetryCount = 0;
+    this.hasSocketRestarted = false;
   }
 
   async onError(errorEvent): Promise<void> {
@@ -669,7 +705,7 @@ export default class ChargingStation {
       case WebSocketCloseEventStatusCode.CLOSE_NORMAL: // Normal close
       case WebSocketCloseEventStatusCode.CLOSE_NO_STATUS:
         logger.info(`${this._logPrefix()} Socket normally closed with status '${Utils.getWebSocketCloseEventStatusString(closeEvent)}'`);
-        this._autoReconnectRetryCount = 0;
+        this.autoReconnectRetryCount = 0;
         break;
       default: // Abnormal close
         logger.error(`${this._logPrefix()} Socket abnormally closed with status '${Utils.getWebSocketCloseEventStatusString(closeEvent)}'`);
@@ -687,17 +723,21 @@ export default class ChargingStation {
   }
 
   async onMessage(messageEvent: MessageEvent): Promise<void> {
-    let [messageType, messageId, commandName, commandPayload, errorDetails] = [0, '', Constants.ENTITY_CHARGING_STATION, '', ''];
+    let [messageType, messageId, commandName, commandPayload, errorDetails]: IncomingRequest = [0, '', '' as IncomingRequestCommand, {}, {}];
+    let responseCallback: (payload?: Record<string, unknown> | string, requestPayload?: Record<string, unknown>) => void;
+    let rejectCallback: (error: OCPPError) => void;
+    let requestPayload: Record<string, unknown>;
+    let errMsg: string;
     try {
       // Parse the message
-      [messageType, messageId, commandName, commandPayload, errorDetails] = JSON.parse(messageEvent.toString());
+      [messageType, messageId, commandName, commandPayload, errorDetails] = JSON.parse(messageEvent.toString()) as IncomingRequest;
 
       // Check the Type of message
       switch (messageType) {
         // Incoming Message
         case MessageType.CALL_MESSAGE:
           if (this.getEnableStatistics()) {
-            this._statistics.addMessage(commandName, messageType);
+            this.statistics.addMessage(commandName, messageType);
           }
           // Process the call
           await this.handleRequest(messageId, commandName, commandPayload);
@@ -705,10 +745,8 @@ export default class ChargingStation {
         // Outcome Message
         case MessageType.CALL_RESULT_MESSAGE:
           // Respond
-          // eslint-disable-next-line no-case-declarations
-          let responseCallback; let requestPayload;
-          if (Utils.isIterable(this._requests[messageId])) {
-            [responseCallback, , requestPayload] = this._requests[messageId];
+          if (Utils.isIterable(this.requests[messageId])) {
+            [responseCallback, , requestPayload] = this.requests[messageId];
           } else {
             throw new Error(`Response request for message id ${messageId} is not iterable`);
           }
@@ -716,35 +754,32 @@ export default class ChargingStation {
             // Error
             throw new Error(`Response request for unknown message id ${messageId}`);
           }
-          delete this._requests[messageId];
+          delete this.requests[messageId];
           responseCallback(commandName, requestPayload);
           break;
         // Error Message
         case MessageType.CALL_ERROR_MESSAGE:
-          if (!this._requests[messageId]) {
+          if (!this.requests[messageId]) {
             // Error
             throw new Error(`Error request for unknown message id ${messageId}`);
           }
-          // eslint-disable-next-line no-case-declarations
-          let rejectCallback;
-          if (Utils.isIterable(this._requests[messageId])) {
-            [, rejectCallback] = this._requests[messageId];
+          if (Utils.isIterable(this.requests[messageId])) {
+            [, rejectCallback] = this.requests[messageId];
           } else {
             throw new Error(`Error request for message id ${messageId} is not iterable`);
           }
-          delete this._requests[messageId];
-          rejectCallback(new OCPPError(commandName, commandPayload, errorDetails));
+          delete this.requests[messageId];
+          rejectCallback(new OCPPError(commandName, commandPayload.toString(), errorDetails));
           break;
         // Error
         default:
-          // eslint-disable-next-line no-case-declarations
-          const errMsg = `${this._logPrefix()} Wrong message type ${messageType}`;
+          errMsg = `${this._logPrefix()} Wrong message type ${messageType}`;
           logger.error(errMsg);
           throw new Error(errMsg);
       }
     } catch (error) {
       // Log
-      logger.error('%s Incoming message %j processing error %s on request content type %s', this._logPrefix(), messageEvent, error, this._requests[messageId]);
+      logger.error('%s Incoming message %j processing error %j on request content type %j', this._logPrefix(), messageEvent, error, this.requests[messageId]);
       // Send error
       messageType !== MessageType.CALL_ERROR_MESSAGE && await this.sendError(messageId, error, commandName);
     }
@@ -753,19 +788,17 @@ export default class ChargingStation {
   async sendHeartbeat(): Promise<void> {
     try {
       const payload: HeartbeatRequest = {};
-      await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, 'Heartbeat');
+      await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, RequestCommand.HEARTBEAT);
     } catch (error) {
-      logger.error(this._logPrefix() + ' Send Heartbeat error: %j', error);
-      throw error;
+      this.handleRequestError(RequestCommand.HEARTBEAT, error);
     }
   }
 
   async sendBootNotification(): Promise<BootNotificationResponse> {
     try {
-      return await this.sendMessage(Utils.generateUUID(), this._bootNotificationRequest, MessageType.CALL_MESSAGE, 'BootNotification') as BootNotificationResponse;
+      return await this.sendMessage(Utils.generateUUID(), this.bootNotificationRequest, MessageType.CALL_MESSAGE, RequestCommand.BOOT_NOTIFICATION) as BootNotificationResponse;
     } catch (error) {
-      logger.error(this._logPrefix() + ' Send BootNotification error: %j', error);
-      throw error;
+      this.handleRequestError(RequestCommand.BOOT_NOTIFICATION, error);
     }
   }
 
@@ -777,10 +810,20 @@ export default class ChargingStation {
         errorCode,
         status,
       };
-      await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, 'StatusNotification');
+      await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, RequestCommand.STATUS_NOTIFICATION);
     } catch (error) {
-      logger.error(this._logPrefix() + ' Send StatusNotification error: %j', error);
-      throw error;
+      this.handleRequestError(RequestCommand.STATUS_NOTIFICATION, error);
+    }
+  }
+
+  async sendAuthorize(idTag?: string): Promise<AuthorizeResponse> {
+    try {
+      const payload: AuthorizeRequest = {
+        ...!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.TRANSACTION_DEFAULT_TAGID },
+      };
+      return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, RequestCommand.AUTHORIZE) as AuthorizeResponse;
+    } catch (error) {
+      this.handleRequestError(RequestCommand.AUTHORIZE, error);
     }
   }
 
@@ -788,14 +831,13 @@ export default class ChargingStation {
     try {
       const payload: StartTransactionRequest = {
         connectorId,
-        ...!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.TRANSACTION_DEFAULT_IDTAG },
+        ...!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.TRANSACTION_DEFAULT_TAGID },
         meterStart: 0,
         timestamp: new Date().toISOString(),
       };
-      return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, 'StartTransaction') as StartTransactionResponse;
+      return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, RequestCommand.START_TRANSACTION) as StartTransactionResponse;
     } catch (error) {
-      logger.error(this._logPrefix() + ' Send StartTransaction error: %j', error);
-      throw error;
+      this.handleRequestError(RequestCommand.START_TRANSACTION, error);
     }
   }
 
@@ -809,253 +851,29 @@ export default class ChargingStation {
         timestamp: new Date().toISOString(),
         ...reason && { reason },
       };
-      return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, 'StopTransaction') as StartTransactionResponse;
-    } catch (error) {
-      logger.error(this._logPrefix() + ' Send StopTransaction error: %j', error);
-      throw error;
-    }
-  }
-
-  // eslint-disable-next-line consistent-this
-  async sendMeterValues(connectorId: number, interval: number, self: ChargingStation, debug = false): Promise<void> {
-    try {
-      const meterValue: MeterValue = {
-        timestamp: new Date().toISOString(),
-        sampledValue: [],
-      };
-      const meterValuesTemplate: SampledValue[] = self.getConnector(connectorId).MeterValues;
-      for (let index = 0; index < meterValuesTemplate.length; index++) {
-        const connector = self.getConnector(connectorId);
-        // SoC measurand
-        if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.STATE_OF_CHARGE && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.STATE_OF_CHARGE)) {
-          meterValue.sampledValue.push({
-            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.PERCENT },
-            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-            measurand: meterValuesTemplate[index].measurand,
-            ...!Utils.isUndefined(meterValuesTemplate[index].location) ? { location: meterValuesTemplate[index].location } : { location: MeterValueLocation.EV },
-            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: Utils.getRandomInt(100).toString() },
-          });
-          const sampledValuesIndex = meterValue.sampledValue.length - 1;
-          if (Utils.convertToInt(meterValue.sampledValue[sampledValuesIndex].value) > 100 || debug) {
-            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/100`);
-          }
-        // Voltage measurand
-        } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.VOLTAGE && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.VOLTAGE)) {
-          const voltageMeasurandValue = Utils.getRandomFloatRounded(self._getVoltageOut() + self._getVoltageOut() * 0.1, self._getVoltageOut() - self._getVoltageOut() * 0.1);
-          meterValue.sampledValue.push({
-            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.VOLT },
-            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-            measurand: meterValuesTemplate[index].measurand,
-            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
-            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: voltageMeasurandValue.toString() },
-          });
-          for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
-            let phaseValue: string;
-            if (self._getVoltageOut() >= 0 && self._getVoltageOut() <= 250) {
-              phaseValue = `L${phase}-N`;
-            } else if (self._getVoltageOut() > 250) {
-              phaseValue = `L${phase}-L${(phase + 1) % self._getNumberOfPhases() !== 0 ? (phase + 1) % self._getNumberOfPhases() : self._getNumberOfPhases()}`;
-            }
-            meterValue.sampledValue.push({
-              ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.VOLT },
-              ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-              measurand: meterValuesTemplate[index].measurand,
-              ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
-              ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: voltageMeasurandValue.toString() },
-              phase: phaseValue as MeterValuePhase,
-            });
-          }
-        // Power.Active.Import measurand
-        } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.POWER_ACTIVE_IMPORT && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.POWER_ACTIVE_IMPORT)) {
-          // FIXME: factor out powerDivider checks
-          if (Utils.isUndefined(self._stationInfo.powerDivider)) {
-            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
-            logger.error(errMsg);
-            throw Error(errMsg);
-          } else if (self._stationInfo.powerDivider && self._stationInfo.powerDivider <= 0) {
-            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self._stationInfo.powerDivider}`;
-            logger.error(errMsg);
-            throw Error(errMsg);
-          }
-          const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${self._getPowerOutType()} powerOutType in template file ${self._stationTemplateFile}, cannot calculate ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
-          const powerMeasurandValues = {} as MeasurandValues;
-          const maxPower = Math.round(self._stationInfo.maxPower / self._stationInfo.powerDivider);
-          const maxPowerPerPhase = Math.round((self._stationInfo.maxPower / self._stationInfo.powerDivider) / self._getNumberOfPhases());
-          switch (self._getPowerOutType()) {
-            case PowerOutType.AC:
-              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
-                powerMeasurandValues.L1 = Utils.getRandomFloatRounded(maxPowerPerPhase);
-                powerMeasurandValues.L2 = 0;
-                powerMeasurandValues.L3 = 0;
-                if (self._getNumberOfPhases() === 3) {
-                  powerMeasurandValues.L2 = Utils.getRandomFloatRounded(maxPowerPerPhase);
-                  powerMeasurandValues.L3 = Utils.getRandomFloatRounded(maxPowerPerPhase);
-                }
-                powerMeasurandValues.allPhases = Utils.roundTo(powerMeasurandValues.L1 + powerMeasurandValues.L2 + powerMeasurandValues.L3, 2);
-              }
-              break;
-            case PowerOutType.DC:
-              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
-                powerMeasurandValues.allPhases = Utils.getRandomFloatRounded(maxPower);
-              }
-              break;
-            default:
-              logger.error(errMsg);
-              throw Error(errMsg);
-          }
-          meterValue.sampledValue.push({
-            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT },
-            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-            measurand: meterValuesTemplate[index].measurand,
-            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
-            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: powerMeasurandValues.allPhases.toString() },
-          });
-          const sampledValuesIndex = meterValue.sampledValue.length - 1;
-          if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxPower || debug) {
-            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxPower}`);
-          }
-          for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
-            const phaseValue = `L${phase}-N`;
-            meterValue.sampledValue.push({
-              ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT },
-              ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-              ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
-              ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
-              ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: powerMeasurandValues[`L${phase}`] as string },
-              phase: phaseValue as MeterValuePhase,
-            });
-          }
-        // Current.Import measurand
-        } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.CURRENT_IMPORT && self._getConfigurationKey('MeterValuesSampledData').value.includes(MeterValueMeasurand.CURRENT_IMPORT)) {
-          // FIXME: factor out powerDivider checks
-          if (Utils.isUndefined(self._stationInfo.powerDivider)) {
-            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
-            logger.error(errMsg);
-            throw Error(errMsg);
-          } else if (self._stationInfo.powerDivider && self._stationInfo.powerDivider <= 0) {
-            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self._stationInfo.powerDivider}`;
-            logger.error(errMsg);
-            throw Error(errMsg);
-          }
-          const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${self._getPowerOutType()} powerOutType in template file ${self._stationTemplateFile}, cannot calculate ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
-          const currentMeasurandValues: MeasurandValues = {} as MeasurandValues;
-          let maxAmperage: number;
-          switch (self._getPowerOutType()) {
-            case PowerOutType.AC:
-              maxAmperage = ElectricUtils.ampPerPhaseFromPower(self._getNumberOfPhases(), self._stationInfo.maxPower / self._stationInfo.powerDivider, self._getVoltageOut());
-              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
-                currentMeasurandValues.L1 = Utils.getRandomFloatRounded(maxAmperage);
-                currentMeasurandValues.L2 = 0;
-                currentMeasurandValues.L3 = 0;
-                if (self._getNumberOfPhases() === 3) {
-                  currentMeasurandValues.L2 = Utils.getRandomFloatRounded(maxAmperage);
-                  currentMeasurandValues.L3 = Utils.getRandomFloatRounded(maxAmperage);
-                }
-                currentMeasurandValues.allPhases = Utils.roundTo((currentMeasurandValues.L1 + currentMeasurandValues.L2 + currentMeasurandValues.L3) / self._getNumberOfPhases(), 2);
-              }
-              break;
-            case PowerOutType.DC:
-              maxAmperage = ElectricUtils.ampTotalFromPower(self._stationInfo.maxPower / self._stationInfo.powerDivider, self._getVoltageOut());
-              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
-                currentMeasurandValues.allPhases = Utils.getRandomFloatRounded(maxAmperage);
-              }
-              break;
-            default:
-              logger.error(errMsg);
-              throw Error(errMsg);
-          }
-          meterValue.sampledValue.push({
-            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.AMP },
-            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-            measurand: meterValuesTemplate[index].measurand,
-            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
-            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: currentMeasurandValues.allPhases.toString() },
-          });
-          const sampledValuesIndex = meterValue.sampledValue.length - 1;
-          if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxAmperage || debug) {
-            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxAmperage}`);
-          }
-          for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
-            const phaseValue = `L${phase}`;
-            meterValue.sampledValue.push({
-              ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.AMP },
-              ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-              ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
-              ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
-              ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: currentMeasurandValues[phaseValue] as string },
-              phase: phaseValue as MeterValuePhase,
-            });
-          }
-        // Energy.Active.Import.Register measurand (default)
-        } else if (!meterValuesTemplate[index].measurand || meterValuesTemplate[index].measurand === MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER) {
-          // FIXME: factor out powerDivider checks
-          if (Utils.isUndefined(self._stationInfo.powerDivider)) {
-            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
-            logger.error(errMsg);
-            throw Error(errMsg);
-          } else if (self._stationInfo.powerDivider && self._stationInfo.powerDivider <= 0) {
-            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self._stationInfo.powerDivider}`;
-            logger.error(errMsg);
-            throw Error(errMsg);
-          }
-          if (Utils.isUndefined(meterValuesTemplate[index].value)) {
-            const measurandValue = Utils.getRandomInt(self._stationInfo.maxPower / (self._stationInfo.powerDivider * 3600000) * interval);
-            // Persist previous value in connector
-            if (connector && !Utils.isNullOrUndefined(connector.lastEnergyActiveImportRegisterValue) && connector.lastEnergyActiveImportRegisterValue >= 0) {
-              connector.lastEnergyActiveImportRegisterValue += measurandValue;
-            } else {
-              connector.lastEnergyActiveImportRegisterValue = 0;
-            }
-          }
-          meterValue.sampledValue.push({
-            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT_HOUR },
-            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
-            ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
-            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
-            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } :
-              { value: connector.lastEnergyActiveImportRegisterValue.toString() },
-          });
-          const sampledValuesIndex = meterValue.sampledValue.length - 1;
-          const maxConsumption = Math.round(self._stationInfo.maxPower * 3600 / (self._stationInfo.powerDivider * interval));
-          if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxConsumption || debug) {
-            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxConsumption}`);
-          }
-        // Unsupported measurand
-        } else {
-          logger.info(`${self._logPrefix()} Unsupported MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} on connectorId ${connectorId}`);
-        }
-      }
-      const payload: MeterValuesRequest = {
-        connectorId,
-        transactionId: self.getConnector(connectorId).transactionId,
-        meterValue: meterValue,
-      };
-      await self.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, 'MeterValues');
+      return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, RequestCommand.STOP_TRANSACTION) as StartTransactionResponse;
     } catch (error) {
-      logger.error(self._logPrefix() + ' Send MeterValues error: %j', error);
-      throw error;
+      this.handleRequestError(RequestCommand.STOP_TRANSACTION, error);
     }
   }
 
-  async sendError(messageId: string, err: Error | OCPPError, commandName: string): Promise<unknown> {
-    // Check exception type: only OCPP error are accepted
-    const error = err instanceof OCPPError ? err : new OCPPError(ErrorType.INTERNAL_ERROR, err.message, err.stack && err.stack);
+  async sendError(messageId: string, error: OCPPError, commandName: RequestCommand | IncomingRequestCommand): Promise<unknown> {
     // Send error
     return this.sendMessage(messageId, error, MessageType.CALL_ERROR_MESSAGE, commandName);
   }
 
-  async sendMessage(messageId: string, commandParams, messageType = MessageType.CALL_RESULT_MESSAGE, commandName: string): Promise<any> {
+  async sendMessage(messageId: string, commandParams: any, messageType: MessageType = MessageType.CALL_RESULT_MESSAGE, commandName: RequestCommand | IncomingRequestCommand): Promise<any> {
     // eslint-disable-next-line @typescript-eslint/no-this-alias
     const self = this;
     // Send a message through wsConnection
     return new Promise((resolve: (value?: any | PromiseLike<any>) => void, reject: (reason?: any) => void) => {
-      let messageToSend;
+      let messageToSend: string;
       // Type of message
       switch (messageType) {
         // Request
         case MessageType.CALL_MESSAGE:
           // Build request
-          this._requests[messageId] = [responseCallback, rejectCallback, commandParams];
+          this.requests[messageId] = [responseCallback, rejectCallback, commandParams] as Request;
           messageToSend = JSON.stringify([messageType, messageId, commandName, commandParams]);
           break;
         // Response
@@ -1070,25 +888,25 @@ export default class ChargingStation {
           break;
       }
       // Check if wsConnection opened and charging station registered
-      if (this._isWebSocketOpen() && (this._isRegistered() || commandName === 'BootNotification')) {
+      if (this._isWebSocketOpen() && (this._isRegistered() || commandName === RequestCommand.BOOT_NOTIFICATION)) {
         if (this.getEnableStatistics()) {
-          this._statistics.addMessage(commandName, messageType);
+          this.statistics.addMessage(commandName, messageType);
         }
         // Yes: Send Message
-        this._wsConnection.send(messageToSend);
-      } else {
+        this.wsConnection.send(messageToSend);
+      } else if (commandName !== RequestCommand.BOOT_NOTIFICATION) {
         let dups = false;
         // Handle dups in buffer
-        for (const message of this._messageQueue) {
+        for (const message of this.messageQueue) {
           // Same message
-          if (JSON.stringify(messageToSend) === JSON.stringify(message)) {
+          if (messageToSend === message) {
             dups = true;
             break;
           }
         }
         if (!dups) {
           // Buffer message
-          this._messageQueue.push(messageToSend);
+          this.messageQueue.push(messageToSend);
         }
         // Reject it
         return rejectCallback(new OCPPError(commandParams.code ? commandParams.code : ErrorType.GENERIC_ERROR, commandParams.message ? commandParams.message : `WebSocket closed for message id '${messageId}' with content '${messageToSend}', message buffered`, commandParams.details ? commandParams.details : {}));
@@ -1099,35 +917,35 @@ export default class ChargingStation {
         resolve();
       } else if (messageType === MessageType.CALL_ERROR_MESSAGE) {
         // Send timeout
-        setTimeout(() => rejectCallback(new OCPPError(commandParams.code ? commandParams.code : ErrorType.GENERIC_ERROR, commandParams.message ? commandParams.message : `Timeout for message id '${messageId}' with content '${messageToSend}'`, commandParams.details ? commandParams.details : {})), Constants.OCPP_WEBSOCKET_TIMEOUT);
+        setTimeout(() => rejectCallback(new OCPPError(commandParams.code ? commandParams.code : ErrorType.GENERIC_ERROR, commandParams.message ? commandParams.message : `Timeout for message id '${messageId}' with content '${messageToSend}'`, commandParams.details ? commandParams.details : {})), Constants.OCPP_ERROR_TIMEOUT);
       }
 
       // Function that will receive the request's response
-      async function responseCallback(payload, requestPayload): Promise<void> {
+      async function responseCallback(payload: Record<string, unknown> | string, requestPayload: Record<string, unknown>): Promise<void> {
         if (self.getEnableStatistics()) {
-          self._statistics.addMessage(commandName, messageType);
+          self.statistics.addMessage(commandName, messageType);
         }
         // Send the response
-        await self.handleResponse(commandName, payload, requestPayload);
+        await self.handleResponse(commandName as RequestCommand, payload, requestPayload);
         resolve(payload);
       }
 
       // Function that will receive the request's rejection
       function rejectCallback(error: OCPPError): void {
         if (self.getEnableStatistics()) {
-          self._statistics.addMessage(commandName, messageType);
+          self.statistics.addMessage(commandName, messageType);
         }
         logger.debug(`${self._logPrefix()} Error: %j occurred when calling command %s with parameters: %j`, error, commandName, commandParams);
         // Build Exception
         // eslint-disable-next-line no-empty-function
-        self._requests[messageId] = [() => { }, () => { }, {}]; // Properly format the request
+        self.requests[messageId] = [() => { }, () => { }, {}]; // Properly format the request
         // Send error
         reject(error);
       }
     });
   }
 
-  async handleResponse(commandName: string, payload, requestPayload): Promise<void> {
+  async handleResponse(commandName: RequestCommand, payload: Record<string, unknown> | string, requestPayload: Record<string, unknown>): Promise<void> {
     const responseCallbackFn = 'handleResponse' + commandName;
     if (typeof this[responseCallbackFn] === 'function') {
       await this[responseCallbackFn](payload, requestPayload);
@@ -1138,11 +956,10 @@ export default class ChargingStation {
 
   handleResponseBootNotification(payload: BootNotificationResponse, requestPayload: BootNotificationRequest): void {
     if (payload.status === RegistrationStatus.ACCEPTED) {
-      this._heartbeatInterval = payload.interval * 1000;
-      this._heartbeatSetInterval ? this._restartHeartbeat() : this._startHeartbeat();
-      this._addConfigurationKey('HeartBeatInterval', payload.interval.toString());
-      this._addConfigurationKey('HeartbeatInterval', payload.interval.toString(), false, false);
-      this._hasStopped && (this._hasStopped = false);
+      this.heartbeatSetInterval ? this._restartHeartbeat() : this._startHeartbeat();
+      this._addConfigurationKey(StandardParametersKey.HeartBeatInterval, payload.interval.toString());
+      this._addConfigurationKey(StandardParametersKey.HeartbeatInterval, payload.interval.toString(), false, false);
+      this.hasStopped && (this.hasStopped = false);
     } else if (payload.status === RegistrationStatus.PENDING) {
       logger.info(this._logPrefix() + ' Charging station in pending state on the central server');
     } else {
@@ -1159,20 +976,16 @@ export default class ChargingStation {
 
   _resetTransactionOnConnector(connectorId: number): void {
     this._initTransactionOnConnector(connectorId);
-    if (this.getConnector(connectorId).transactionSetInterval) {
+    if (this.getConnector(connectorId)?.transactionSetInterval) {
       clearInterval(this.getConnector(connectorId).transactionSetInterval);
     }
   }
 
   async handleResponseStartTransaction(payload: StartTransactionResponse, requestPayload: StartTransactionRequest): Promise<void> {
     const connectorId = requestPayload.connectorId;
-    if (this.getConnector(connectorId).transactionStarted) {
-      logger.debug(this._logPrefix() + ' Trying to start a transaction on an already used connector ' + connectorId.toString() + ': %j', this.getConnector(connectorId));
-      return;
-    }
 
     let transactionConnectorId: number;
-    for (const connector in this._connectors) {
+    for (const connector in this.connectors) {
       if (Utils.convertToInt(connector) > 0 && Utils.convertToInt(connector) === connectorId) {
         transactionConnectorId = Utils.convertToInt(connector);
         break;
@@ -1182,21 +995,26 @@ export default class ChargingStation {
       logger.error(this._logPrefix() + ' Trying to start a transaction on a non existing connector Id ' + connectorId.toString());
       return;
     }
-    if (payload.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
+    if (this.getConnector(connectorId)?.transactionStarted) {
+      logger.debug(this._logPrefix() + ' Trying to start a transaction on an already used connector ' + connectorId.toString() + ': %j', this.getConnector(connectorId));
+      return;
+    }
+
+    if (payload?.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
       this.getConnector(connectorId).transactionStarted = true;
       this.getConnector(connectorId).transactionId = payload.transactionId;
       this.getConnector(connectorId).idTag = requestPayload.idTag;
       this.getConnector(connectorId).lastEnergyActiveImportRegisterValue = 0;
       await this.sendStatusNotification(connectorId, ChargePointStatus.CHARGING);
-      logger.info(this._logPrefix() + ' Transaction ' + payload.transactionId.toString() + ' STARTED on ' + this._stationInfo.name + '#' + connectorId.toString() + ' for idTag ' + requestPayload.idTag);
-      if (this._stationInfo.powerSharedByConnectors) {
-        this._stationInfo.powerDivider++;
+      logger.info(this._logPrefix() + ' Transaction ' + payload.transactionId.toString() + ' STARTED on ' + this.stationInfo.chargingStationId + '#' + connectorId.toString() + ' for idTag ' + requestPayload.idTag);
+      if (this.stationInfo.powerSharedByConnectors) {
+        this.stationInfo.powerDivider++;
       }
-      const configuredMeterValueSampleInterval = this._getConfigurationKey('MeterValueSampleInterval');
+      const configuredMeterValueSampleInterval = this._getConfigurationKey(StandardParametersKey.MeterValueSampleInterval);
       this._startMeterValues(connectorId,
         configuredMeterValueSampleInterval ? Utils.convertToInt(configuredMeterValueSampleInterval.value) * 1000 : 60000);
     } else {
-      logger.error(this._logPrefix() + ' Starting transaction id ' + payload.transactionId.toString() + ' REJECTED with status ' + payload.idTagInfo.status + ', idTag ' + requestPayload.idTag);
+      logger.error(this._logPrefix() + ' Starting transaction id ' + payload.transactionId.toString() + ' REJECTED with status ' + payload?.idTagInfo?.status + ', idTag ' + requestPayload.idTag);
       this._resetTransactionOnConnector(connectorId);
       await this.sendStatusNotification(connectorId, ChargePointStatus.AVAILABLE);
     }
@@ -1204,8 +1022,8 @@ export default class ChargingStation {
 
   async handleResponseStopTransaction(payload: StopTransactionResponse, requestPayload: StopTransactionRequest): Promise<void> {
     let transactionConnectorId: number;
-    for (const connector in this._connectors) {
-      if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector)).transactionId === requestPayload.transactionId) {
+    for (const connector in this.connectors) {
+      if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector))?.transactionId === requestPayload.transactionId) {
         transactionConnectorId = Utils.convertToInt(connector);
         break;
       }
@@ -1215,11 +1033,15 @@ export default class ChargingStation {
       return;
     }
     if (payload.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
-      await this.sendStatusNotification(transactionConnectorId, ChargePointStatus.AVAILABLE);
-      if (this._stationInfo.powerSharedByConnectors) {
-        this._stationInfo.powerDivider--;
+      if (!this._isChargingStationAvailable() || !this._isConnectorAvailable(transactionConnectorId)) {
+        await this.sendStatusNotification(transactionConnectorId, ChargePointStatus.UNAVAILABLE);
+      } else {
+        await this.sendStatusNotification(transactionConnectorId, ChargePointStatus.AVAILABLE);
       }
-      logger.info(this._logPrefix() + ' Transaction ' + requestPayload.transactionId.toString() + ' STOPPED on ' + this._stationInfo.name + '#' + transactionConnectorId.toString());
+      if (this.stationInfo.powerSharedByConnectors) {
+        this.stationInfo.powerDivider--;
+      }
+      logger.info(this._logPrefix() + ' Transaction ' + requestPayload.transactionId.toString() + ' STOPPED on ' + this.stationInfo.chargingStationId + '#' + transactionConnectorId.toString());
       this._resetTransactionOnConnector(transactionConnectorId);
     } else {
       logger.error(this._logPrefix() + ' Stopping transaction id ' + requestPayload.transactionId.toString() + ' REJECTED with status ' + payload.idTagInfo?.status);
@@ -1238,7 +1060,11 @@ export default class ChargingStation {
     logger.debug(this._logPrefix() + ' Heartbeat response received: %j to Heartbeat request: %j', payload, requestPayload);
   }
 
-  async handleRequest(messageId: string, commandName: string, commandPayload): Promise<void> {
+  handleResponseAuthorize(payload: AuthorizeResponse, requestPayload: AuthorizeRequest): void {
+    logger.debug(this._logPrefix() + ' Authorize response received: %j to Authorize request: %j', payload, requestPayload);
+  }
+
+  async handleRequest(messageId: string, commandName: IncomingRequestCommand, commandPayload: Record<string, unknown>): Promise<void> {
     let response;
     // Call
     if (typeof this['handleRequest' + commandName] === 'function') {
@@ -1265,10 +1091,10 @@ export default class ChargingStation {
   handleRequestReset(commandPayload: ResetRequest): DefaultResponse {
     setImmediate(async () => {
       await this.stop(commandPayload.type + 'Reset' as StopTransactionReason);
-      await Utils.sleep(this._stationInfo.resetTime);
+      await Utils.sleep(this.stationInfo.resetTime);
       await this.start();
     });
-    logger.info(`${this._logPrefix()} ${commandPayload.type} reset command received, simulating it. The station will be back online in ${Utils.milliSecondsToHHMMSS(this._stationInfo.resetTime)}`);
+    logger.info(`${this._logPrefix()} ${commandPayload.type} reset command received, simulating it. The station will be back online in ${Utils.milliSecondsToHHMMSS(this.stationInfo.resetTime)}`);
     return Constants.OCPP_RESPONSE_ACCEPTED;
   }
 
@@ -1282,7 +1108,7 @@ export default class ChargingStation {
       logger.error(this._logPrefix() + ' Trying to unlock connector ' + connectorId.toString());
       return Constants.OCPP_RESPONSE_UNLOCK_NOT_SUPPORTED;
     }
-    if (this.getConnector(connectorId).transactionStarted) {
+    if (this.getConnector(connectorId)?.transactionStarted) {
       const stopResponse = await this.sendStopTransaction(this.getConnector(connectorId).transactionId, StopTransactionReason.UNLOCK_COMMAND);
       if (stopResponse.idTagInfo?.status === AuthorizationStatus.ACCEPTED) {
         return Constants.OCPP_RESPONSE_UNLOCKED;
@@ -1293,41 +1119,46 @@ export default class ChargingStation {
     return Constants.OCPP_RESPONSE_UNLOCKED;
   }
 
-  _getConfigurationKey(key: string, caseInsensitive = false): ConfigurationKey {
-    return this._configuration.configurationKey.find((configElement) => {
+  _getConfigurationKey(key: string | StandardParametersKey, caseInsensitive = false): ConfigurationKey {
+    const configurationKey: ConfigurationKey = this.configuration.configurationKey.find((configElement) => {
       if (caseInsensitive) {
         return configElement.key.toLowerCase() === key.toLowerCase();
       }
       return configElement.key === key;
     });
+    return configurationKey;
   }
 
-  _addConfigurationKey(key: string, value: string, readonly = false, visible = true, reboot = false): void {
+  _addConfigurationKey(key: string | StandardParametersKey, value: string, readonly = false, visible = true, reboot = false): void {
     const keyFound = this._getConfigurationKey(key);
     if (!keyFound) {
-      this._configuration.configurationKey.push({
+      this.configuration.configurationKey.push({
         key,
         readonly,
         value,
         visible,
         reboot,
       });
+    } else {
+      logger.error(`${this._logPrefix()} Trying to add an already existing configuration key: %j`, keyFound);
     }
   }
 
-  _setConfigurationKeyValue(key: string, value: string): void {
+  _setConfigurationKeyValue(key: string | StandardParametersKey, value: string): void {
     const keyFound = this._getConfigurationKey(key);
     if (keyFound) {
-      const keyIndex = this._configuration.configurationKey.indexOf(keyFound);
-      this._configuration.configurationKey[keyIndex].value = value;
+      const keyIndex = this.configuration.configurationKey.indexOf(keyFound);
+      this.configuration.configurationKey[keyIndex].value = value;
+    } else {
+      logger.error(`${this._logPrefix()} Trying to set a value on a non existing configuration key: %j`, { key, value });
     }
   }
 
   handleRequestGetConfiguration(commandPayload: GetConfigurationRequest): GetConfigurationResponse {
-    const configurationKey: ConfigurationKey[] = [];
+    const configurationKey: OCPPConfigurationKey[] = [];
     const unknownKey: string[] = [];
     if (Utils.isEmptyArray(commandPayload.key)) {
-      for (const configuration of this._configuration.configurationKey) {
+      for (const configuration of this.configuration.configurationKey) {
         if (Utils.isUndefined(configuration.visible)) {
           configuration.visible = true;
         }
@@ -1380,26 +1211,25 @@ export default class ChargingStation {
     } else if (keyToChange && keyToChange.readonly) {
       return Constants.OCPP_CONFIGURATION_RESPONSE_REJECTED;
     } else if (keyToChange && !keyToChange.readonly) {
-      const keyIndex = this._configuration.configurationKey.indexOf(keyToChange);
+      const keyIndex = this.configuration.configurationKey.indexOf(keyToChange);
       let valueChanged = false;
-      if (this._configuration.configurationKey[keyIndex].value !== commandPayload.value) {
-        this._configuration.configurationKey[keyIndex].value = commandPayload.value;
+      if (this.configuration.configurationKey[keyIndex].value !== commandPayload.value) {
+        this.configuration.configurationKey[keyIndex].value = commandPayload.value;
         valueChanged = true;
       }
       let triggerHeartbeatRestart = false;
-      if (keyToChange.key === 'HeartBeatInterval' && valueChanged) {
-        this._setConfigurationKeyValue('HeartbeatInterval', commandPayload.value);
+      if (keyToChange.key === StandardParametersKey.HeartBeatInterval && valueChanged) {
+        this._setConfigurationKeyValue(StandardParametersKey.HeartbeatInterval, commandPayload.value);
         triggerHeartbeatRestart = true;
       }
-      if (keyToChange.key === 'HeartbeatInterval' && valueChanged) {
-        this._setConfigurationKeyValue('HeartBeatInterval', commandPayload.value);
+      if (keyToChange.key === StandardParametersKey.HeartbeatInterval && valueChanged) {
+        this._setConfigurationKeyValue(StandardParametersKey.HeartBeatInterval, commandPayload.value);
         triggerHeartbeatRestart = true;
       }
       if (triggerHeartbeatRestart) {
-        this._heartbeatInterval = Utils.convertToInt(commandPayload.value) * 1000;
         this._restartHeartbeat();
       }
-      if (keyToChange.key === 'WebSocketPingInterval' && valueChanged) {
+      if (keyToChange.key === StandardParametersKey.WebSocketPingInterval && valueChanged) {
         this._restartWebSocketPing();
       }
       if (keyToChange.reboot) {
@@ -1409,48 +1239,145 @@ export default class ChargingStation {
     }
   }
 
+  _setChargingProfile(connectorId: number, cp: ChargingProfile): boolean {
+    if (!Utils.isEmptyArray(this.getConnector(connectorId).chargingProfiles)) {
+      this.getConnector(connectorId).chargingProfiles.forEach((chargingProfile: ChargingProfile, index: number) => {
+        if (chargingProfile.chargingProfileId === cp.chargingProfileId
+          || (chargingProfile.stackLevel === cp.stackLevel && chargingProfile.chargingProfilePurpose === cp.chargingProfilePurpose)) {
+          this.getConnector(connectorId).chargingProfiles[index] = cp;
+          return true;
+        }
+      });
+    }
+    this.getConnector(connectorId).chargingProfiles.push(cp);
+    return true;
+  }
+
   handleRequestSetChargingProfile(commandPayload: SetChargingProfileRequest): SetChargingProfileResponse {
     if (!this.getConnector(commandPayload.connectorId)) {
       logger.error(`${this._logPrefix()} Trying to set a charging profile to a non existing connector Id ${commandPayload.connectorId}`);
-      return Constants.OCPP_CHARGING_PROFILE_RESPONSE_REJECTED;
+      return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
     }
-    if (commandPayload.csChargingProfiles.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE && !this.getConnector(commandPayload.connectorId)?.transactionStarted) {
-      return Constants.OCPP_CHARGING_PROFILE_RESPONSE_REJECTED;
+    if (commandPayload.csChargingProfiles.chargingProfilePurpose === ChargingProfilePurposeType.CHARGE_POINT_MAX_PROFILE && commandPayload.connectorId !== 0) {
+      return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
     }
-    this.getConnector(commandPayload.connectorId).chargingProfiles.forEach((chargingProfile: ChargingProfile, index: number) => {
-      if (chargingProfile.chargingProfileId === commandPayload.csChargingProfiles.chargingProfileId
-        || (chargingProfile.stackLevel === commandPayload.csChargingProfiles.stackLevel && chargingProfile.chargingProfilePurpose === commandPayload.csChargingProfiles.chargingProfilePurpose)) {
-        this.getConnector(commandPayload.connectorId).chargingProfiles[index] = chargingProfile;
-        return Constants.OCPP_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+    if (commandPayload.csChargingProfiles.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE && (commandPayload.connectorId === 0 || !this.getConnector(commandPayload.connectorId)?.transactionStarted)) {
+      return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_REJECTED;
+    }
+    this._setChargingProfile(commandPayload.connectorId, commandPayload.csChargingProfiles);
+    return Constants.OCPP_SET_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+  }
+
+  handleRequestClearChargingProfile(commandPayload: ClearChargingProfileRequest): ClearChargingProfileResponse {
+    if (!this.getConnector(commandPayload.connectorId)) {
+      logger.error(`${this._logPrefix()} Trying to clear a charging profile to a non existing connector Id ${commandPayload.connectorId}`);
+      return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
+    }
+    if (commandPayload.connectorId && !Utils.isEmptyArray(this.getConnector(commandPayload.connectorId).chargingProfiles)) {
+      this.getConnector(commandPayload.connectorId).chargingProfiles = [];
+      return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+    }
+    if (!commandPayload.connectorId) {
+      let clearedCP = false;
+      for (const connector in this.connectors) {
+        if (!Utils.isEmptyArray(this.getConnector(Utils.convertToInt(connector)).chargingProfiles)) {
+          this.getConnector(Utils.convertToInt(connector)).chargingProfiles.forEach((chargingProfile: ChargingProfile, index: number) => {
+            let clearCurrentCP = false;
+            if (chargingProfile.chargingProfileId === commandPayload.id) {
+              clearCurrentCP = true;
+            }
+            if (!commandPayload.chargingProfilePurpose && chargingProfile.stackLevel === commandPayload.stackLevel) {
+              clearCurrentCP = true;
+            }
+            if (!chargingProfile.stackLevel && chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose) {
+              clearCurrentCP = true;
+            }
+            if (chargingProfile.stackLevel === commandPayload.stackLevel && chargingProfile.chargingProfilePurpose === commandPayload.chargingProfilePurpose) {
+              clearCurrentCP = true;
+            }
+            if (clearCurrentCP) {
+              this.getConnector(commandPayload.connectorId).chargingProfiles[index] = {} as ChargingProfile;
+              clearedCP = true;
+            }
+          });
+        }
       }
-    });
-    this.getConnector(commandPayload.connectorId).chargingProfiles.push(commandPayload.csChargingProfiles);
-    return Constants.OCPP_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+      if (clearedCP) {
+        return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_ACCEPTED;
+      }
+    }
+    return Constants.OCPP_CLEAR_CHARGING_PROFILE_RESPONSE_UNKNOWN;
+  }
+
+  handleRequestChangeAvailability(commandPayload: ChangeAvailabilityRequest): ChangeAvailabilityResponse {
+    const connectorId: number = commandPayload.connectorId;
+    if (!this.getConnector(connectorId)) {
+      logger.error(`${this._logPrefix()} Trying to change the availability of a non existing connector Id ${connectorId.toString()}`);
+      return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
+    }
+    const chargePointStatus: ChargePointStatus = commandPayload.type === AvailabilityType.OPERATIVE ? ChargePointStatus.AVAILABLE : ChargePointStatus.UNAVAILABLE;
+    if (connectorId === 0) {
+      let response: ChangeAvailabilityResponse = Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
+      for (const connector in this.connectors) {
+        if (this.getConnector(Utils.convertToInt(connector)).transactionStarted) {
+          response = Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
+        }
+        this.getConnector(Utils.convertToInt(connector)).availability = commandPayload.type;
+        response === Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED && this.sendStatusNotification(Utils.convertToInt(connector), chargePointStatus);
+      }
+      return response;
+    } else if (connectorId > 0 && (this.getConnector(0).availability === AvailabilityType.OPERATIVE || (this.getConnector(0).availability === AvailabilityType.INOPERATIVE && commandPayload.type === AvailabilityType.INOPERATIVE))) {
+      if (this.getConnector(connectorId)?.transactionStarted) {
+        this.getConnector(connectorId).availability = commandPayload.type;
+        return Constants.OCPP_AVAILABILITY_RESPONSE_SCHEDULED;
+      }
+      this.getConnector(connectorId).availability = commandPayload.type;
+      void this.sendStatusNotification(connectorId, chargePointStatus);
+      return Constants.OCPP_AVAILABILITY_RESPONSE_ACCEPTED;
+    }
+    return Constants.OCPP_AVAILABILITY_RESPONSE_REJECTED;
   }
 
   async handleRequestRemoteStartTransaction(commandPayload: RemoteStartTransactionRequest): Promise<DefaultResponse> {
     const transactionConnectorID: number = commandPayload.connectorId ? commandPayload.connectorId : 1;
-    if (this._getAuthorizeRemoteTxRequests() && this._getLocalAuthListEnabled() && this.hasAuthorizedTags()) {
-      // Check if authorized
-      if (this._authorizedTags.find((value) => value === commandPayload.idTag)) {
-        // Authorization successful start transaction
-        await this.sendStartTransaction(transactionConnectorID, commandPayload.idTag);
-        logger.debug(this._logPrefix() + ' Transaction remotely STARTED on ' + this._stationInfo.name + '#' + transactionConnectorID.toString() + ' for idTag ' + commandPayload.idTag);
-        return Constants.OCPP_RESPONSE_ACCEPTED;
+    if (this._isChargingStationAvailable() && this._isConnectorAvailable(transactionConnectorID)) {
+      if (this._getAuthorizeRemoteTxRequests() && this._getLocalAuthListEnabled() && this.hasAuthorizedTags()) {
+        // Check if authorized
+        if (this.authorizedTags.find((value) => value === commandPayload.idTag)) {
+          await this.sendStatusNotification(transactionConnectorID, ChargePointStatus.PREPARING);
+          if (commandPayload.chargingProfile && commandPayload.chargingProfile.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE) {
+            this._setChargingProfile(transactionConnectorID, commandPayload.chargingProfile);
+          } else if (commandPayload.chargingProfile && commandPayload.chargingProfile.chargingProfilePurpose !== ChargingProfilePurposeType.TX_PROFILE) {
+            return Constants.OCPP_RESPONSE_REJECTED;
+          }
+          // Authorization successful start transaction
+          await this.sendStartTransaction(transactionConnectorID, commandPayload.idTag);
+          logger.debug(this._logPrefix() + ' Transaction remotely STARTED on ' + this.stationInfo.chargingStationId + '#' + transactionConnectorID.toString() + ' for idTag ' + commandPayload.idTag);
+          return Constants.OCPP_RESPONSE_ACCEPTED;
+        }
+        logger.error(this._logPrefix() + ' Remote starting transaction REJECTED on connector Id ' + transactionConnectorID.toString() + ', idTag ' + commandPayload.idTag);
+        return Constants.OCPP_RESPONSE_REJECTED;
+      }
+      await this.sendStatusNotification(transactionConnectorID, ChargePointStatus.PREPARING);
+      if (commandPayload.chargingProfile && commandPayload.chargingProfile.chargingProfilePurpose === ChargingProfilePurposeType.TX_PROFILE) {
+        this._setChargingProfile(transactionConnectorID, commandPayload.chargingProfile);
+      } else if (commandPayload.chargingProfile && commandPayload.chargingProfile.chargingProfilePurpose !== ChargingProfilePurposeType.TX_PROFILE) {
+        return Constants.OCPP_RESPONSE_REJECTED;
       }
-      logger.error(this._logPrefix() + ' Remote starting transaction REJECTED, idTag ' + commandPayload.idTag);
-      return Constants.OCPP_RESPONSE_REJECTED;
+      // No local authorization check required => start transaction
+      await this.sendStartTransaction(transactionConnectorID, commandPayload.idTag);
+      logger.debug(this._logPrefix() + ' Transaction remotely STARTED on ' + this.stationInfo.chargingStationId + '#' + transactionConnectorID.toString() + ' for idTag ' + commandPayload.idTag);
+      return Constants.OCPP_RESPONSE_ACCEPTED;
     }
-    // No local authorization check required => start transaction
-    await this.sendStartTransaction(transactionConnectorID, commandPayload.idTag);
-    logger.debug(this._logPrefix() + ' Transaction remotely STARTED on ' + this._stationInfo.name + '#' + transactionConnectorID.toString() + ' for idTag ' + commandPayload.idTag);
-    return Constants.OCPP_RESPONSE_ACCEPTED;
+    logger.error(this._logPrefix() + ' Remote starting transaction REJECTED on unavailable connector Id ' + transactionConnectorID.toString() + ', idTag ' + commandPayload.idTag);
+    return Constants.OCPP_RESPONSE_REJECTED;
   }
 
   async handleRequestRemoteStopTransaction(commandPayload: RemoteStopTransactionRequest): Promise<DefaultResponse> {
     const transactionId = commandPayload.transactionId;
-    for (const connector in this._connectors) {
-      if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector)).transactionId === transactionId) {
+    for (const connector in this.connectors) {
+      if (Utils.convertToInt(connector) > 0 && this.getConnector(Utils.convertToInt(connector))?.transactionId === transactionId) {
+        await this.sendStatusNotification(Utils.convertToInt(connector), ChargePointStatus.FINISHING);
         await this.sendStopTransaction(transactionId);
         return Constants.OCPP_RESPONSE_ACCEPTED;
       }
@@ -1458,5 +1385,230 @@ export default class ChargingStation {
     logger.info(this._logPrefix() + ' Trying to remote stop a non existing transaction ' + transactionId.toString());
     return Constants.OCPP_RESPONSE_REJECTED;
   }
+
+  // eslint-disable-next-line consistent-this
+  private async sendMeterValues(connectorId: number, interval: number, self: ChargingStation, debug = false): Promise<void> {
+    try {
+      const meterValue: MeterValue = {
+        timestamp: new Date().toISOString(),
+        sampledValue: [],
+      };
+      const meterValuesTemplate: SampledValue[] = self.getConnector(connectorId).MeterValues;
+      for (let index = 0; index < meterValuesTemplate.length; index++) {
+        const connector = self.getConnector(connectorId);
+        // SoC measurand
+        if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.STATE_OF_CHARGE && self._getConfigurationKey(StandardParametersKey.MeterValuesSampledData).value.includes(MeterValueMeasurand.STATE_OF_CHARGE)) {
+          meterValue.sampledValue.push({
+            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.PERCENT },
+            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+            measurand: meterValuesTemplate[index].measurand,
+            ...!Utils.isUndefined(meterValuesTemplate[index].location) ? { location: meterValuesTemplate[index].location } : { location: MeterValueLocation.EV },
+            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: Utils.getRandomInt(100).toString() },
+          });
+          const sampledValuesIndex = meterValue.sampledValue.length - 1;
+          if (Utils.convertToInt(meterValue.sampledValue[sampledValuesIndex].value) > 100 || debug) {
+            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/100`);
+          }
+        // Voltage measurand
+        } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.VOLTAGE && self._getConfigurationKey(StandardParametersKey.MeterValuesSampledData).value.includes(MeterValueMeasurand.VOLTAGE)) {
+          const voltageMeasurandValue = Utils.getRandomFloatRounded(self._getVoltageOut() + self._getVoltageOut() * 0.1, self._getVoltageOut() - self._getVoltageOut() * 0.1);
+          meterValue.sampledValue.push({
+            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.VOLT },
+            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+            measurand: meterValuesTemplate[index].measurand,
+            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
+            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: voltageMeasurandValue.toString() },
+          });
+          for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
+            let phaseValue: string;
+            if (self._getVoltageOut() >= 0 && self._getVoltageOut() <= 250) {
+              phaseValue = `L${phase}-N`;
+            } else if (self._getVoltageOut() > 250) {
+              phaseValue = `L${phase}-L${(phase + 1) % self._getNumberOfPhases() !== 0 ? (phase + 1) % self._getNumberOfPhases() : self._getNumberOfPhases()}`;
+            }
+            meterValue.sampledValue.push({
+              ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.VOLT },
+              ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+              measurand: meterValuesTemplate[index].measurand,
+              ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
+              ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: voltageMeasurandValue.toString() },
+              phase: phaseValue as MeterValuePhase,
+            });
+          }
+        // Power.Active.Import measurand
+        } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.POWER_ACTIVE_IMPORT && self._getConfigurationKey(StandardParametersKey.MeterValuesSampledData).value.includes(MeterValueMeasurand.POWER_ACTIVE_IMPORT)) {
+          // FIXME: factor out powerDivider checks
+          if (Utils.isUndefined(self.stationInfo.powerDivider)) {
+            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
+            logger.error(errMsg);
+            throw Error(errMsg);
+          } else if (self.stationInfo.powerDivider && self.stationInfo.powerDivider <= 0) {
+            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self.stationInfo.powerDivider}`;
+            logger.error(errMsg);
+            throw Error(errMsg);
+          }
+          const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${self._getPowerOutType()} powerOutType in template file ${self.stationTemplateFile}, cannot calculate ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
+          const powerMeasurandValues = {} as MeasurandValues;
+          const maxPower = Math.round(self.stationInfo.maxPower / self.stationInfo.powerDivider);
+          const maxPowerPerPhase = Math.round((self.stationInfo.maxPower / self.stationInfo.powerDivider) / self._getNumberOfPhases());
+          switch (self._getPowerOutType()) {
+            case PowerOutType.AC:
+              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
+                powerMeasurandValues.L1 = Utils.getRandomFloatRounded(maxPowerPerPhase);
+                powerMeasurandValues.L2 = 0;
+                powerMeasurandValues.L3 = 0;
+                if (self._getNumberOfPhases() === 3) {
+                  powerMeasurandValues.L2 = Utils.getRandomFloatRounded(maxPowerPerPhase);
+                  powerMeasurandValues.L3 = Utils.getRandomFloatRounded(maxPowerPerPhase);
+                }
+                powerMeasurandValues.allPhases = Utils.roundTo(powerMeasurandValues.L1 + powerMeasurandValues.L2 + powerMeasurandValues.L3, 2);
+              }
+              break;
+            case PowerOutType.DC:
+              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
+                powerMeasurandValues.allPhases = Utils.getRandomFloatRounded(maxPower);
+              }
+              break;
+            default:
+              logger.error(errMsg);
+              throw Error(errMsg);
+          }
+          meterValue.sampledValue.push({
+            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT },
+            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+            measurand: meterValuesTemplate[index].measurand,
+            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
+            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: powerMeasurandValues.allPhases.toString() },
+          });
+          const sampledValuesIndex = meterValue.sampledValue.length - 1;
+          if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxPower || debug) {
+            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxPower}`);
+          }
+          for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
+            const phaseValue = `L${phase}-N`;
+            meterValue.sampledValue.push({
+              ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT },
+              ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+              ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
+              ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
+              ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: powerMeasurandValues[`L${phase}`] as string },
+              phase: phaseValue as MeterValuePhase,
+            });
+          }
+        // Current.Import measurand
+        } else if (meterValuesTemplate[index].measurand && meterValuesTemplate[index].measurand === MeterValueMeasurand.CURRENT_IMPORT && self._getConfigurationKey(StandardParametersKey.MeterValuesSampledData).value.includes(MeterValueMeasurand.CURRENT_IMPORT)) {
+          // FIXME: factor out powerDivider checks
+          if (Utils.isUndefined(self.stationInfo.powerDivider)) {
+            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
+            logger.error(errMsg);
+            throw Error(errMsg);
+          } else if (self.stationInfo.powerDivider && self.stationInfo.powerDivider <= 0) {
+            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self.stationInfo.powerDivider}`;
+            logger.error(errMsg);
+            throw Error(errMsg);
+          }
+          const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${self._getPowerOutType()} powerOutType in template file ${self.stationTemplateFile}, cannot calculate ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
+          const currentMeasurandValues: MeasurandValues = {} as MeasurandValues;
+          let maxAmperage: number;
+          switch (self._getPowerOutType()) {
+            case PowerOutType.AC:
+              maxAmperage = ElectricUtils.ampPerPhaseFromPower(self._getNumberOfPhases(), self.stationInfo.maxPower / self.stationInfo.powerDivider, self._getVoltageOut());
+              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
+                currentMeasurandValues.L1 = Utils.getRandomFloatRounded(maxAmperage);
+                currentMeasurandValues.L2 = 0;
+                currentMeasurandValues.L3 = 0;
+                if (self._getNumberOfPhases() === 3) {
+                  currentMeasurandValues.L2 = Utils.getRandomFloatRounded(maxAmperage);
+                  currentMeasurandValues.L3 = Utils.getRandomFloatRounded(maxAmperage);
+                }
+                currentMeasurandValues.allPhases = Utils.roundTo((currentMeasurandValues.L1 + currentMeasurandValues.L2 + currentMeasurandValues.L3) / self._getNumberOfPhases(), 2);
+              }
+              break;
+            case PowerOutType.DC:
+              maxAmperage = ElectricUtils.ampTotalFromPower(self.stationInfo.maxPower / self.stationInfo.powerDivider, self._getVoltageOut());
+              if (Utils.isUndefined(meterValuesTemplate[index].value)) {
+                currentMeasurandValues.allPhases = Utils.getRandomFloatRounded(maxAmperage);
+              }
+              break;
+            default:
+              logger.error(errMsg);
+              throw Error(errMsg);
+          }
+          meterValue.sampledValue.push({
+            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.AMP },
+            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+            measurand: meterValuesTemplate[index].measurand,
+            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
+            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: currentMeasurandValues.allPhases.toString() },
+          });
+          const sampledValuesIndex = meterValue.sampledValue.length - 1;
+          if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxAmperage || debug) {
+            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxAmperage}`);
+          }
+          for (let phase = 1; self._getNumberOfPhases() === 3 && phase <= self._getNumberOfPhases(); phase++) {
+            const phaseValue = `L${phase}`;
+            meterValue.sampledValue.push({
+              ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.AMP },
+              ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+              ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
+              ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
+              ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } : { value: currentMeasurandValues[phaseValue] as string },
+              phase: phaseValue as MeterValuePhase,
+            });
+          }
+        // Energy.Active.Import.Register measurand (default)
+        } else if (!meterValuesTemplate[index].measurand || meterValuesTemplate[index].measurand === MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER) {
+          // FIXME: factor out powerDivider checks
+          if (Utils.isUndefined(self.stationInfo.powerDivider)) {
+            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider is undefined`;
+            logger.error(errMsg);
+            throw Error(errMsg);
+          } else if (self.stationInfo.powerDivider && self.stationInfo.powerDivider <= 0) {
+            const errMsg = `${self._logPrefix()} MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: powerDivider have zero or below value ${self.stationInfo.powerDivider}`;
+            logger.error(errMsg);
+            throw Error(errMsg);
+          }
+          if (Utils.isUndefined(meterValuesTemplate[index].value)) {
+            const measurandValue = Utils.getRandomInt(self.stationInfo.maxPower / (self.stationInfo.powerDivider * 3600000) * interval);
+            // Persist previous value in connector
+            if (connector && !Utils.isNullOrUndefined(connector.lastEnergyActiveImportRegisterValue) && connector.lastEnergyActiveImportRegisterValue >= 0) {
+              connector.lastEnergyActiveImportRegisterValue += measurandValue;
+            } else {
+              connector.lastEnergyActiveImportRegisterValue = 0;
+            }
+          }
+          meterValue.sampledValue.push({
+            ...!Utils.isUndefined(meterValuesTemplate[index].unit) ? { unit: meterValuesTemplate[index].unit } : { unit: MeterValueUnit.WATT_HOUR },
+            ...!Utils.isUndefined(meterValuesTemplate[index].context) && { context: meterValuesTemplate[index].context },
+            ...!Utils.isUndefined(meterValuesTemplate[index].measurand) && { measurand: meterValuesTemplate[index].measurand },
+            ...!Utils.isUndefined(meterValuesTemplate[index].location) && { location: meterValuesTemplate[index].location },
+            ...!Utils.isUndefined(meterValuesTemplate[index].value) ? { value: meterValuesTemplate[index].value } :
+              { value: connector.lastEnergyActiveImportRegisterValue.toString() },
+          });
+          const sampledValuesIndex = meterValue.sampledValue.length - 1;
+          const maxConsumption = Math.round(self.stationInfo.maxPower * 3600 / (self.stationInfo.powerDivider * interval));
+          if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxConsumption || debug) {
+            logger.error(`${self._logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ? meterValue.sampledValue[sampledValuesIndex].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxConsumption}`);
+          }
+        // Unsupported measurand
+        } else {
+          logger.info(`${self._logPrefix()} Unsupported MeterValues measurand ${meterValuesTemplate[index].measurand ? meterValuesTemplate[index].measurand : MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} on connectorId ${connectorId}`);
+        }
+      }
+      const payload: MeterValuesRequest = {
+        connectorId,
+        transactionId: self.getConnector(connectorId).transactionId,
+        meterValue: meterValue,
+      };
+      await self.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, RequestCommand.METERVALUES);
+    } catch (error) {
+      this.handleRequestError(RequestCommand.METERVALUES, error);
+    }
+  }
+
+  private handleRequestError(commandName: RequestCommand, error: Error) {
+    logger.error(this._logPrefix() + ' Send ' + commandName + ' error: %j', error);
+    throw error;
+  }
 }