Xcel Energy ElectricPowerUsageSummary API

Billing-period aggregate summaries of electric power usage.

Documentation GitHub OpenAPI

Operations 2

GET /Subscription/{subscriptionId}/UsagePoint/{usagePointId}/UsageSummary List ElectricPowerUsageSummaries for a UsagePoint #

GET /Subscription/{subscriptionId}/UsagePoint/{usagePointId}/UsageSummary/{usageSummaryId} Retrieve a single ElectricPowerUsageSummary #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Xcel Energy Green Button Connect My Data Electric Power…
  summary: OAuth 2.0 authorized customer energy usage data based on the NAESB ESPI standard.
  description: Xcel Energy Green Button Connect My Data API based on the ESPI (Energy Services Provider Interface) standard developed by NAESB.
  version: 1.1.0
  contact:
    name: Xcel Energy Developer Portal
    url: https://developer-apim.aws.xcelenergy.com/
  license:
    name: Proprietary
    url: https://www.xcelenergy.com/privacy_policy
  x-generated-from: documentation
  x-last-validated: '2026-05-03'
  x-standards:
  - NAESB ESPI 1.1
  - Green Button Connect My Data
servers:
- url: https://api.xcelenergy.com/DataCustodian/espi/1_1/resource
  description: Xcel Energy Data Custodian (Production)
- url: https://developer-apim.aws.xcelenergy.com/DataCustodian/espi/1_1/resource
  description: Xcel Energy Developer Sandbox
tags:
- name: ElectricPowerUsageSummary
  description: Billing-period aggregate summaries of electric power usage.
paths:
  /Subscription/{subscriptionId}/UsagePoint/{usagePointId}/UsageSummary:
    get:
      operationId: listElectricPowerUsageSummaries
      summary: List ElectricPowerUsageSummaries for a UsagePoint
      description: Returns an Atom feed of ElectricPowerUsageSummary entries containing billing-period aggregate energy usage and demand information for the UsagePoint.
      tags:
      - ElectricPowerUsageSummary
      security:
      - accessToken: []
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      - $ref: '#/components/parameters/UsagePointId'
      - $ref: '#/components/parameters/PublishedMin'
      - $ref: '#/components/parameters/PublishedMax'
      responses:
        '200':
          description: Atom feed of ElectricPowerUsageSummary entries.
          content:
            application/atom+xml:
              schema:
                $ref: '#/components/schemas/ElectricPowerUsageSummaryFeed'
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /Subscription/{subscriptionId}/UsagePoint/{usagePointId}/UsageSummary/{usageSummaryId}:
    get:
      operationId: getElectricPowerUsageSummary
      summary: Retrieve a single ElectricPowerUsageSummary
      description: Returns the ElectricPowerUsageSummary entry identified by usageSummaryId.
      tags:
      - ElectricPowerUsageSummary
      security:
      - accessToken: []
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      - $ref: '#/components/parameters/UsagePointId'
      - $ref: '#/components/parameters/UsageSummaryId'
      responses:
        '200':
          description: Atom entry containing the ElectricPowerUsageSummary resource.
          content:
            application/atom+xml:
              schema:
                $ref: '#/components/schemas/ElectricPowerUsageSummary'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  parameters:
    PublishedMin:
      name: published-min
      in: query
      required: false
      description: Lower bound (inclusive) for the Atom entry published timestamp, in epoch seconds or ISO 8601.
      schema:
        type: string
        example: '2026-01-01T00:00:00Z'
    PublishedMax:
      name: published-max
      in: query
      required: false
      description: Upper bound (inclusive) for the Atom entry published timestamp, in epoch seconds or ISO 8601.
      schema:
        type: string
        example: '2026-04-30T23:59:59Z'
    UsageSummaryId:
      name: usageSummaryId
      in: path
      required: true
      description: Identifier of an ElectricPowerUsageSummary resource.
      schema:
        type: string
        example: '1'
    UsagePointId:
      name: usagePointId
      in: path
      required: true
      description: Identifier of a UsagePoint within a Subscription.
      schema:
        type: string
        example: '1'
    SubscriptionId:
      name: subscriptionId
      in: path
      required: true
      description: Identifier of a Subscription created from an Authorization.
      schema:
        type: string
        example: sub-5678
  schemas:
    ElectricPowerUsageSummaryFeed:
      allOf:
      - $ref: '#/components/schemas/AtomFeed'
    AtomFeed:
      type: object
      description: Atom feed envelope used to wrap collections of ESPI resource entries.
      properties:
        id:
          type: string
        title:
          type: string
        updated:
          type: string
          format: date-time
        link:
          type: array
          items:
            type: object
            properties:
              rel:
                type: string
              href:
                type: string
        entry:
          type: array
          items:
            $ref: '#/components/schemas/AtomEntry'
    ElectricPowerUsageSummary:
      allOf:
      - $ref: '#/components/schemas/AtomEntry'
      - type: object
        description: Billing-period aggregate energy usage and demand summary.
        properties:
          billingPeriod:
            type: object
            properties:
              duration:
                type: integer
              start:
                type: integer
          billLastPeriod:
            type: integer
          billToDate:
            type: integer
          costAdditionalLastPeriod:
            type: integer
          currency:
            type: integer
            description: Currency code per ISO 4217 (e.g. 840 = USD).
          qualityOfReading:
            type: integer
          statusTimeStamp:
            type: integer
          currentBillingPeriodOverAllConsumption:
            $ref: '#/components/schemas/SummaryMeasurement'
          currentDayLastYearNetConsumption:
            $ref: '#/components/schemas/SummaryMeasurement'
          previousDayNetConsumption:
            $ref: '#/components/schemas/SummaryMeasurement'
    AtomEntry:
      type: object
      description: Atom entry envelope used to wrap ESPI resource payloads.
      properties:
        id:
          type: string
          description: Stable URI for the entry.
        title:
          type: string
          description: Human-readable title of the entry.
        published:
          type: string
          format: date-time
          description: Time the entry was first published.
        updated:
          type: string
          format: date-time
          description: Time the entry was last updated.
        link:
          type: array
          description: Atom link relations (self, up, related).
          items:
            type: object
            properties:
              rel:
                type: string
                example: self
              href:
                type: string
                example: UsagePoint/1
        content:
          type: object
          description: ESPI XML payload content.
    SummaryMeasurement:
      type: object
      description: Scaled measurement used by ESPI summary resources.
      properties:
        powerOfTenMultiplier:
          type: integer
        timeStamp:
          type: integer
        uom:
          type: integer
        value:
          type: integer
        readingTypeRef:
          type: string
  responses:
    NotFound:
      description: The requested resource was not found or is not authorized for this token.
    Unauthorized:
      description: Authentication failed or the access token is invalid or expired.
  securitySchemes:
    accessToken:
      type: oauth2
      description: Customer-scoped access token issued via the OAuth 2.0 authorization-code grant.
      flows:
        authorizationCode:
          authorizationUrl: https://api.xcelenergy.com/DataCustodian/oauth/authorize
          tokenUrl: https://api.xcelenergy.com/DataCustodian/oauth/token
          refreshUrl: https://api.xcelenergy.com/DataCustodian/oauth/token
          scopes:
            FB=4_5_15;IntervalDuration=900;BlockDuration=monthly;HistoryLength=34128000: Standard ESPI scope string for 15-minute electric usage data with 13 months of history.
    clientAccessToken:
      type: oauth2
      description: Application-scoped client access token used for management endpoints (Authorization list, Bulk, ServiceStatus).
      flows:
        clientCredentials:
          tokenUrl: https://api.xcelenergy.com/DataCustodian/oauth/token
          scopes:
            DataCustodian_Admin_Access: Administrative scope used for application-level operations.
    registrationAccessToken:
      type: http
      scheme: bearer
      bearerFormat: Registration Access Token
      description: Token issued at application registration; used to read or update ApplicationInformation.