ev.energy Tariffs API

openapi: 3.2.0
info:
  title: ev.energy v2 Tariffs API
  version: '2.0'
  contact:
    email: developers@ev.energy
    url: developers.ev.energy
    name: ev.energy developers
  description: The official API for ev.energy, version 2.
  license:
    name: Proprietary
    url: https://ev.energy
  termsOfService: ''
servers:
- url: https://api.ev.energy/v2
  description: Live API for both production and sandbox requests.
  x-internal: false
- description: Staging server for internal testing only.
  url: https://api-staging.ev.energy/v2
  x-internal: true
security:
- oauth2: []
tags:
- name: Tariffs
  description: Endpoints related to energy suppliers and their tariffs.
paths:
  /suppliers:
    get:
      summary: List suppliers, sorted alphabetically by name.
      tags:
      - Tariffs
      responses:
        '200':
          description: Return a list of Suppliers.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Supplier'
          headers:
            Link:
              $ref: '#/components/headers/link-pages'
            EvEnergy-Version:
              $ref: '#/components/headers/version-2'
            X-RateLimit-Limit:
              $ref: '#/components/headers/x-ratelimit-limit'
            X-RateLimit-Remaining:
              $ref: '#/components/headers/x-ratelimit-remaining'
            RetryAfter:
              $ref: '#/components/headers/retry-after'
        '400':
          $ref: '#/components/responses/Problem400BadRequestList'
        '401':
          $ref: '#/components/responses/Problem401Unauthorized'
        '403':
          $ref: '#/components/responses/Problem403Forbidden'
        '404':
          $ref: '#/components/responses/Problem404NotFound'
        '406':
          $ref: '#/components/responses/Problem406NotAcceptable'
        '429':
          $ref: '#/components/responses/Problem429TooManyRequests'
      operationId: get-suppliers
      parameters:
      - $ref: '#/components/parameters/page'
      - $ref: '#/components/parameters/page_size'
      - $ref: '#/components/parameters/available_for_user_id'
      - $ref: '#/components/parameters/version-2'
      description: 'List all the energy suppliers known by the ev.energy system.


        Use the `available_for_user_id` query parameter to narrow the list to only those relevant to a specific user.'
      security:
      - oauth2:
        - tariff:read
  /suppliers/{supplier_id}:
    parameters:
    - $ref: '#/components/parameters/supplier_id'
    get:
      summary: Retrieve a supplier
      tags:
      - Tariffs
      responses:
        '200':
          description: Return a single supplier.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Supplier'
          headers:
            EvEnergy-Version:
              $ref: '#/components/headers/version-2'
            X-RateLimit-Limit:
              $ref: '#/components/headers/x-ratelimit-limit'
            X-RateLimit-Remaining:
              $ref: '#/components/headers/x-ratelimit-remaining'
            RetryAfter:
              $ref: '#/components/headers/retry-after'
        '400':
          $ref: '#/components/responses/Problem400BadRequestRetrieve'
        '401':
          $ref: '#/components/responses/Problem401Unauthorized'
        '403':
          $ref: '#/components/responses/Problem403Forbidden'
        '404':
          $ref: '#/components/responses/Problem404NotFound'
        '406':
          $ref: '#/components/responses/Problem406NotAcceptable'
        '429':
          $ref: '#/components/responses/Problem429TooManyRequests'
      operationId: get-suppliers-suppler_id
      parameters:
      - $ref: '#/components/parameters/version-2'
      description: Retrieve details for a single, specific energy supplier.
      security:
      - oauth2:
        - tariff:read
  /tariffs:
    get:
      summary: List tariffs, sorted alphabetically by name.
      tags:
      - Tariffs
      responses:
        '200':
          description: Return a list of Tariffs.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Tariff'
          headers:
            Link:
              $ref: '#/components/headers/link-pages'
            EvEnergy-Version:
              $ref: '#/components/headers/version-2'
            X-RateLimit-Limit:
              $ref: '#/components/headers/x-ratelimit-limit'
            X-RateLimit-Remaining:
              $ref: '#/components/headers/x-ratelimit-remaining'
            RetryAfter:
              $ref: '#/components/headers/retry-after'
        '400':
          $ref: '#/components/responses/Problem400BadRequestList'
        '401':
          $ref: '#/components/responses/Problem401Unauthorized'
        '403':
          $ref: '#/components/responses/Problem403Forbidden'
        '404':
          $ref: '#/components/responses/Problem404NotFound'
        '406':
          $ref: '#/components/responses/Problem406NotAcceptable'
        '429':
          $ref: '#/components/responses/Problem429TooManyRequests'
      operationId: get-tariffs
      parameters:
      - $ref: '#/components/parameters/page'
      - $ref: '#/components/parameters/page_size'
      - $ref: '#/components/parameters/expand-on-tariff'
      - $ref: '#/components/parameters/supplier_id_query'
      - $ref: '#/components/parameters/tariff_valid_query'
      - $ref: '#/components/parameters/tariff_gsp_group_query'
      - $ref: '#/components/parameters/available_for_user_id'
      - $ref: '#/components/parameters/include_optional_tariff'
      - $ref: '#/components/parameters/version-2'
      - $ref: '#/components/parameters/user'
      description: 'List all the energy supplier tariffs known by the ev.energy system.


        Use the `available_for_user_id` query parameter to narrow the list to only those relevant to a specific user and `supplier` query parameter to list only tariffs for a specific supplier.'
      security:
      - oauth2:
        - tariff:read
  /tariffs/{tariff_id}:
    parameters:
    - $ref: '#/components/parameters/tariff_id'
    get:
      summary: Retrieve a tariff
      tags:
      - Tariffs
      responses:
        '200':
          description: Return a single Tariff.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TariffDetail'
          headers:
            EvEnergy-Version:
              $ref: '#/components/headers/version-2'
            X-RateLimit-Limit:
              $ref: '#/components/headers/x-ratelimit-limit'
            X-RateLimit-Remaining:
              $ref: '#/components/headers/x-ratelimit-remaining'
            RetryAfter:
              $ref: '#/components/headers/retry-after'
        '400':
          $ref: '#/components/responses/Problem400BadRequestRetrieve'
        '401':
          $ref: '#/components/responses/Problem401Unauthorized'
        '403':
          $ref: '#/components/responses/Problem403Forbidden'
        '404':
          $ref: '#/components/responses/Problem404NotFound'
        '406':
          $ref: '#/components/responses/Problem406NotAcceptable'
        '429':
          $ref: '#/components/responses/Problem429TooManyRequests'
      operationId: get-tariffs-tariff_id
      parameters:
      - $ref: '#/components/parameters/expand-on-tariff'
      - $ref: '#/components/parameters/available_for_user_id'
      - $ref: '#/components/parameters/version-2'
      description: Retrieve details for a single, specific tariff.
      security:
      - oauth2:
        - tariff:read
  /tariffs/{tariff_id}/prices:
    parameters:
    - $ref: '#/components/parameters/tariff_id'
    get:
      summary: List prices for a tariff
      tags:
      - Tariffs
      responses:
        '200':
          description: Returns a paginated list of prices for the specified tariff.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Price'
          headers:
            Link:
              $ref: '#/components/headers/link-pages'
            EvEnergy-Version:
              $ref: '#/components/headers/version-2'
            X-RateLimit-Limit:
              $ref: '#/components/headers/x-ratelimit-limit'
            X-RateLimit-Remaining:
              $ref: '#/components/headers/x-ratelimit-remaining'
            RetryAfter:
              $ref: '#/components/headers/retry-after'
        '400':
          $ref: '#/components/responses/Problem400BadRequestList'
        '401':
          $ref: '#/components/responses/Problem401Unauthorized'
        '403':
          $ref: '#/components/responses/Problem403Forbidden'
        '404':
          $ref: '#/components/responses/Problem404NotFound'
        '406':
          $ref: '#/components/responses/Problem406NotAcceptable'
        '429':
          $ref: '#/components/responses/Problem429TooManyRequests'
      operationId: get-tariff-prices
      parameters:
      - name: started_at__gte
        in: query
        required: false
        schema:
          type: string
          format: date-time
          example: '2024-01-15T10:00:00Z'
        description: Filter for prices starting at or after this datetime (ISO 8601).
      - name: started_at__lte
        in: query
        required: false
        schema:
          type: string
          format: date-time
          example: '2024-01-15T10:00:00Z'
        description: Filter for prices starting at or before this datetime (ISO 8601).
      - $ref: '#/components/parameters/page'
      - $ref: '#/components/parameters/page_size'
      - $ref: '#/components/parameters/version-2'
      description: 'Returns all prices for the specified tariff. Results are ordered by start time (most recent first).


        Use `started_at__gte` and `started_at__lte` to filter by time range.'
      security:
      - oauth2:
        - tariff:read
        - tariff:prices:read
components:
  parameters:
    user:
      name: EvEnergy-User
      description: If the client is authenticated using Client Credentials, setting EvEnergy-User to a valid user ID allows requests to be made as if you were directly authenticated as that user.
      in: header
      required: false
      schema:
        type: string
        pattern: user[A-Z\d]{26}
        example: user01HN2NJ9NMRZBXT1H6FT9N7735
    tariff_id:
      name: tariff_id
      in: path
      schema:
        type: string
        pattern: tari[A-Z\d]{26}
        example: tari01HN2NJ9NMRZBXT1H6FT9N7735
      required: true
      description: The ID of the specific tariff to retrieve.
    page:
      name: page
      description: The page number to return results for.
      in: query
      required: false
      schema:
        type: number
        example: 2
    expand-on-tariff:
      name: expand
      in: query
      schema:
        type: array
        items:
          type: string
          enum:
          - supplier
          - scheduler_tariff
          - prices
      explode: true
      description: Specify a url field to expand into a nested resource. The prices expansion requires tariff:prices:read scope.
    tariff_valid_query:
      name: valid
      in: query
      required: false
      schema:
        type: boolean
      description: Filter by whether the tariff is currently open to new sign-ups (valid_from on or before today, and valid_until on or after today or unset). `true` returns only currently-available tariffs; `false` returns only superseded or not-yet-available ones. Omit to return all tariffs.
    supplier_id_query:
      name: supplier_id
      in: query
      required: false
      schema:
        type: string
      description: The ID of the supplier to filter by.
    tariff_gsp_group_query:
      name: gsp_group
      in: query
      required: false
      schema:
        type: string
        example: _C
      description: Filter by GB Grid Supply Point (DNO region) code, e.g. `_C` for London.
    version-2:
      name: EvEnergy-Version
      description: Specify the version of this endpoint to use.
      required: false
      in: header
      schema:
        type: number
        enum:
        - 2
    page_size:
      name: page_size
      description: Specify the number of results to return per page.
      in: query
      required: false
      schema:
        type: integer
        default: 25
        minimum: 1
        maximum: 100
        example: 10
    available_for_user_id:
      name: available_for_user_id
      in: query
      schema:
        type: string
        pattern: user[A-Z\d]{26}
        example: user01HN2NJ9NMRZBXT1H6FT9N7735
      description: Filter to only return resources available in the user's region and program.
    supplier_id:
      name: supplier_id
      in: path
      required: true
      schema:
        type: string
        pattern: supl[A-Z\d]{26}
        example: supl01HN2NJ9NMRZBXT1H6FT9N7735
      description: The ID of the specific supplier to retrieve.
    include_optional_tariff:
      name: include_optional
      in: query
      schema:
        type: string
        enum:
        - daily_prices
        example: daily_prices
      allowReserved: false
      allowEmptyValue: false
      description: Include optional tariffs.
  responses:
    Problem404NotFound:
      description: This resource either does not exist or the client is not authorized to access it.
      content:
        application/problem+json:
          schema:
            type: object
            required:
            - title
            - detail
            properties:
              status:
                type: number
                example: 404
              title:
                type: string
                example: Not found
              detail:
                type: string
                example: Resource does not exist or cannot be accessed.
      headers:
        EvEnergy-Version:
          $ref: '#/components/headers/version-2'
        X-RateLimit-Limit:
          $ref: '#/components/headers/x-ratelimit-limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/x-ratelimit-remaining'
        RetryAfter:
          $ref: '#/components/headers/retry-after'
    Problem400BadRequestRetrieve:
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/RFC9457ProblemDetail'
          examples:
            Unsupported Version:
              $ref: '#/components/examples/ProblemUnsupportedVersion'
      description: A problem with the request's parameters prevented it being fulfilled.
      headers:
        EvEnergy-Version:
          $ref: '#/components/headers/version-2'
        X-RateLimit-Limit:
          $ref: '#/components/headers/x-ratelimit-limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/x-ratelimit-remaining'
    Problem429TooManyRequests:
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/RFC9457ProblemDetail'
          examples:
            Example 1:
              value:
                type: https://api.ev.energy/v2/problems/rate-limit-exceeded/
                status: 429
                title: Too Many Requests
                detail: Request was rate limited. Try again in 42 seconds
      description: The client has exceeded its rate limit.
      headers:
        EvEnergy-Version:
          $ref: '#/components/headers/version-2'
        Retry-After:
          $ref: '#/components/headers/retry-after'
        X-RateLimit-Limit:
          $ref: '#/components/headers/x-ratelimit-limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/x-ratelimit-remaining'
    Problem401Unauthorized:
      description: You need to authorise requests to access this resource.
      content:
        application/problem+json:
          schema:
            type: object
            required:
            - title
            - detail
            properties:
              status:
                type: number
                example: 401
              title:
                type: string
                example: Unauthorized
              detail:
                type: string
                example: Authentication credentials were not provided.
      headers:
        EvEnergy-Version:
          $ref: '#/components/headers/version-2'
        X-RateLimit-Limit:
          $ref: '#/components/headers/x-ratelimit-limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/x-ratelimit-remaining'
        RetryAfter:
          $ref: '#/components/headers/retry-after'
    Problem400BadRequestList:
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/RFC9457ProblemDetail'
          examples:
            Invalid Pagination Parameter:
              $ref: '#/components/examples/ProblemInvalidPaginationParameter'
            Unsupported Version:
              $ref: '#/components/examples/ProblemUnsupportedVersion'
      description: A problem with the request's parameters prevented it being fulfilled.
      headers:
        EvEnergy-Version:
          $ref: '#/components/headers/version-2'
        X-RateLimit-Limit:
          $ref: '#/components/headers/x-ratelimit-limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/x-ratelimit-remaining'
        RetryAfter:
          $ref: '#/components/headers/retry-after'
    Problem403Forbidden:
      description: You do not have permission to perform this action.
      content:
        application/problem+json:
          schema:
            type: object
            required:
            - title
            - detail
            properties:
              status:
                type: number
                example: 403
              title:
                type: string
                example: Forbidden
              detail:
                type: string
                example: You do not have permission to perform this action.
      headers:
        EvEnergy-Version:
          $ref: '#/components/headers/version-2'
        X-RateLimit-Limit:
          $ref: '#/components/headers/x-ratelimit-limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/x-ratelimit-remaining'
        RetryAfter:
          $ref: '#/components/headers/retry-after'
    Problem406NotAcceptable:
      description: Could not satisfy the request Accept header.
      content:
        application/problem+json:
          schema:
            type: object
            required:
            - title
            - detail
            properties:
              status:
                type: number
                example: 406
              title:
                type: string
                example: Not Acceptable
              detail:
                type: string
                example: Could not satisfy the request Accept header.
      headers:
        EvEnergy-Version:
          $ref: '#/components/headers/version-2'
        X-RateLimit-Limit:
          $ref: '#/components/headers/x-ratelimit-limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/x-ratelimit-remaining'
        RetryAfter:
          $ref: '#/components/headers/retry-after'
  schemas:
    RFC9457ProblemDetail:
      title: RFC 9457 Problem Detail
      x-tags:
      - problems
      type: object
      required:
      - title
      - detail
      properties:
        type:
          type: string
          format: uri
          example: https://api.ev.energy/v2/problems/example-problem/
        status:
          type: number
          example: 400
        title:
          type: string
          example: Short description
        detail:
          type: string
          example: Long, more specific description.
        instance:
          type: string
          format: uri
          example: https://api.ev.energy/v2/users/user01HN2P75GBNFRJPCZJXEFVXH5E
        notification:
          $ref: '#/components/schemas/Notification'
      examples:
      - type: https://api.ev.energy/v2/problems/example-problem/
        status: 400
        title: Short description
        detail: Long, more specific description.
        instance: https://api.ev.energy/v2/users/user01HN2P75GBNFRJPCZJXEFVXH5E
        notification:
          id: notf01HTHKTXVB77901324BCQPF1RB
          url: https://api.ev.energy/notifications/notf01HTHKTXVB77901324BCQPF1RB
          message_id: ERR0123
          category: ACTIONABLE
          event_time: '2019-08-24T14:15:22Z'
          short_text_title: Your car is disconnected
          short_text_body: We need to reconnect to keep smart charging your car
          detail_page_title: Your car is disconnected
          detail_page_body: Your car has been disconnected. This happens when your password is reset. We need you to re-authorise ev.energy to access your account in order for us to keep managing your charging. Blah blah blah.
          external_link: http://example.com
          external_button_label: More info
          read_at: '2019-08-24T14:20:22Z'
          resolved_at: '2019-08-25T14:15:22Z'
    TariffDetail:
      title: TariffDetail
      examples:
      - id: tari01HN2NJ9NMRZBXT1H6FT9N7735
        url: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7735
        supplier: https://api.ev.energy/v2/suppliers/supl01HN2NJ9NMRZBXT1H6FT9N7735
        name: Fangorn Biomass
        currency: GBP
        daily_prices:
          peak:
            price: '0.30'
            times:
            - start: '18:00:00'
              end: 00:00:00
          mid_peak:
            price: '0.20'
            times:
            - start: '10:00:00'
              end: 08:00:00
          off_peak:
            price: '0.10'
            times:
            - start: 08:00:00
              end: '18:00:00'
        scheduler_tariff: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7835
        current_price: 10
        prices: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7735/prices
      description: 'Extra fields only included when a single tariff is requested. Note: prices field requires tariff:prices:read scope and can be expanded with ?expand=prices.'
      x-tags:
      - Tariffs
      allOf:
      - type: object
        properties:
          current_price:
            type:
            - integer
            - 'null'
            description: The price of the tariff at the current time, given in the smallest unit of the currency of the tariff. For example, 10 means 10 pence.
            example: 10
          prices:
            oneOf:
            - type: string
              format: uri
              example: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7735/prices
            - type: array
              items:
                $ref: '#/components/schemas/Price'
            - type: 'null'
            description: Link to prices endpoint by default. When expanded with ?expand=prices, returns the past 24 hours of prices. Requires tariff:prices:read scope.
            readOnly: true
      - $ref: '#/components/schemas/Tariff'
    Supplier:
      title: Supplier
      type: object
      description: An energy company who supplies electricity tariffs.
      required:
      - id
      - url
      - name
      - icon
      properties:
        id:
          type: string
          description: Unique identifier for the given user.
          pattern: supl[A-Z\d]{26}
          example: supl01HN2NJ9NMRZBXT1H6FT9N7735
          readOnly: true
        url:
          type: string
          format: uri
          example: https://api.ev.energy/v2/suppliers/supl01HN2NJ9NMRZBXT1H6FT9N7735
        name:
          type: string
          example: Rivendell Renewables
        icon:
          type:
          - string
          - 'null'
          format: uri
          example: https://cdn.example.com/rivendell_renewables.jpg
        highlighted:
          type: boolean
          description: A highlighted supplier is one that is often selected by users.
      x-tags:
      - Tariffs
    DailyPrices:
      title: DailyPrices
      description: Information about the tariff's prices for different parts of the day.
      type: object
      additionalProperties: false
      minProperties: 1
      maxProperties: 3
      required:
      - peak
      properties:
        peak:
          $ref: '#/components/schemas/PriceSummary'
        mid_peak:
          $ref: '#/components/schemas/PriceSummary'
        off_peak:
          $ref: '#/components/schemas/PriceSummary'
      x-tags:
      - Tariffs
    Notification:
      title: Notification
      description: Something that the user should be informed about.
      type: object
      examples:
      - id: notf67O36PLTFDB57M0E5L33JZLGM0
        url: https://api.ev.energy/notifications/notf67O36PLTFDB57M0E5L33JZLGM0
        message_id: ERR0123
        category: ACTIONABLE
        event_time: '2019-08-24T14:15:22Z'
        short_text_title: Your car is disconnected
        short_text_body: We need to reconnect to keep smart charging your car
        detail_page_title: Your car is disconnected
        detail_page_body: Your car has been disconnected. This happens when your password is reset. We need you to re-authorise ev.energy to access your account in order for us to keep managing your charging. Blah blah blah.
        external_link: http://example.com
        external_button_label: More info
        read_at: '2019-08-24T14:20:22Z'
        resolved_at: '2019-08-25T14:15:22Z'
      required:
      - id
      - url
      - message_id
      - category
      - event_time
      - short_text_title
      - short_text_body
      - detail_page_title
      - detail_page_body
      - external_link
      - external_button_label
      properties:
        id:
          type: string
          pattern: notf[A-Z\d]{26}
          example: notf67O36PLTFDB57M0E5L33JZLGM0
          description: Unique identifier for the Notification
        url:
          type: string
          format: uri
          example: https://api.ev.energy/notifications/notf67O36PLTFDB57M0E5L33JZLGM0
        message_id:
          type: string
          description: Internal identifier for this notification type. E.g. 'ERR0023'
        category:
          description: Category of this notification type
          enum:
          - ACTIONABLE
          - SERVICE
          - RETRY
          - MARKETING
          - INTERNAL
        event_time:
          type: string
          format: date-time
          description: The timestamp of the event described by this notification
        short_text_title:
          type: string
          description: Short title for the notification
          maxLength: 33
        short_text_body:
          type: string
          description: Short description of the event being notified
          maxLength: 49
        detail_page_title:
          type: string
          description: Title of a help page giving more information about this notification
        detail_page_body:
          type: string
          description: Text of a help page giving more information about this notification
        external_link:
          type:
          - string
          - 'null'
          description: URL of a web page giving further information about this notification
          format: uri
        external_button_label:
          type: string
          description: Text to be displayed on a button leading to the external_link location
        read_at:
          type: string
          format: date-time
          description: When the user examined the contents of this notification
        resolved_at:
          type: string
          format: date-time
          description: When the problem associated with this notification was resolved
    Tariff:
      title: Tariff
      examples:
      - id: tari01HN2NJ9NMRZBXT1H6FT9N7735
        url: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7735
        supplier: https://api.ev.energy/v2/suppliers/supl01HN2NJ9NMRZBXT1H6FT9N7735
        name: Fangorn Biomass
        currency: GBP
        gsp_group: _C
        valid_from: '2026-03-17'
        valid_until: '2027-03-17'
        daily_prices:
          peak:
            price: '0.30'
            times:
            - start: '18:00:00'
              end: 00:00:00
          mid_peak:
            price: '0.20'
            times:
            - start: '10:00:00'
              end: 08:00:00
          off_peak:
            price: '0.10'
            times:
            - start: 08:00:00
              end: '18:00:00'
        scheduler_tariff: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7835
      description: 'Note: daily_prices and type are only available under contract. Please reach out to your account manager to find out more.'
      x-tags:
      - Tariffs
      allOf:
      - $ref: '#/components/schemas/TariffBase'
      - type: object
        properties:
          scheduler_tariff:
            oneOf:
            - type: string
              format: uri
              example: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7835
            - type: object
              required:
              - id
              - url
              - supplier
              - name
              - currency
              properties:
                id:
                  type: string
                  pattern: tari[A-Z\d]{26}
                url:
                  type: string
                  format: uri
                supplier:
                  type: string
                  format: uri
                name:
                  type: string
                currency:
                  type: string
              additionalProperties: true
            - type: 'null'
            description: The tariff used by the scheduler for charge optimisation, which may differ from the billing tariff. Returns a URL by default, or null if not set. Expandable with ?expand=scheduler_tariff to return a TariffBase object (additional fields may be present beyond those listed here).
    Price:
      title: Price
      type: object
      description: A price for a specific time interval.
      x-tags:
      - Tariffs
      required:
      - started_at
      - interval_seconds
      - price_minor_units
      properties:
        started_at:
          type: string
          format: date-time
          description: When this price interval began (ISO 8601 datetime).
          example: '2024-01-15T10:00:00Z'
          readOnly: true
        interval_seconds:
          type: integer
          description: The duration of this price interval in seconds.
          example: 1800
          readOnly: true
        price_minor_units:
          type: integer
          description: The price in minor currency units (e.g., pence for GBP).
          example: 10
          readOnly: true
    PriceSummary:
      title: PriceSummary
      description: A single price for a certain time range.
      type: object
      examples:
      - price: '0.10'
        times:
        - start: '18:00:00'
          end: 00:00:00
      x-tags:
      - Tariffs
      properties:
        price:
          type: string
          example: '0.10'
          description: The price is in major currency units e.g. 0.10 means £0.10.
        times:
          type: array
          items:
            $ref: '#/components/schemas/Times'
    TariffBase:
      title: TariffBase
      type: object
      description: 'Core tariff properties shared by Tariff and expanded scheduler_tariff. Note: daily_prices and type are only available under contract. Please reach out to your account manager to find out more.'
      x-tags:
      - Tariffs
      required:
      - id
      - url
      - supplier
      - name
      - currency
      properties:
        id:
          type: string
          description: Unique identifier for the given user.
          pattern: tari[A-Z\d]{26}
          example: tari01HN2NJ9NMRZBXT1H6FT9N7735
          readOnly: true
        url:
          type: string
          format: uri
          example: https://api.ev.energy/v2/tariffs/tari01HN2NJ9NMRZBXT1H6FT9N7735
        supplier:
          oneOf:
          - type: string
            format: uri
            example: https://api.ev.energy/v2/suppliers/supl01HN2NJ9NMRZBXT1H6FT9N7735
          - $ref: '#/components/schemas/Supplier'
          description: The energy company that supplies this tariff.
        name:
          type: string
          example: Fangorn Biomass
        currency:
          type: string
          example: GBP
        highlighted:
          type: 

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# Full source: https://raw.githubusercontent.com/api-evangelist/ev-energy/refs/heads/main/openapi/ev-energy-tariffs-api-openapi.yml