Elexon

Elexon Margin Forecast API

Generating Plant Operating Margin forecast data, including historical views of data by publish time or forecast date.

Documentation GitHub OpenAPI

Operations 6

GET /forecast/margin/daily Daily margin forecast (OCNMFD2)

GET /forecast/margin/daily/history Historical daily margin forecast (OCNMFD2)

GET /forecast/margin/daily/evolution Evolution daily margin forecast (OCNMFD2)

GET /forecast/margin/weekly Weekly margin forecast (OCNMFW2, OCNMF3Y2)

GET /forecast/margin/weekly/history Historical weekly margin forecast (OCNMFW2, OCNMF3Y2)

GET /forecast/margin/weekly/evolution Evolution daily margin forecast (OCNMFW2, OCNMF3Y2)

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/elexon-margin-forecast-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.2.0
info:
  title: Insights.Api Balancing Mechanism Dynamic Margin Forecast API
  version: '1.0'
  description: Dynamic data.
servers:
- url: https://data.elexon.co.uk/bmrs/api/v1
tags:
- name: Margin Forecast
  description: Generating Plant Operating Margin forecast data, including historical views of data by publish time or forecast date.
paths:
  /forecast/margin/daily:
    get:
      tags:
      - Margin Forecast
      summary: Daily margin forecast (OCNMFD2)
      description: 'This endpoint provides the Generating Plant Operating Margin covering 2 days ahead to 14 days ahead

        in MW values. The Daily API outputs the latest published data for daily margin forecast for D+2 t D+14'
      parameters:
      - name: format
        in: query
        description: Response data format. Use json/xml to include metadata.
        schema:
          enum:
          - json
          - xml
          - csv
          type: string
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            application/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            application/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/csv:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
  /forecast/margin/daily/history:
    get:
      tags:
      - Margin Forecast
      summary: Historical daily margin forecast (OCNMFD2)
      description: 'This endpoint provides the historic Generating Plant Operating Margin covering 2 days ahead to 14 days ahead in MW values.

        The historic API outputs the latest published data for historic daily margin forecast for D+2 to D+14'
      parameters:
      - name: publishTime
        in: query
        required: true
        schema:
          type: string
          format: date-time
      - name: format
        in: query
        description: Response data format. Use json/xml to include metadata.
        schema:
          enum:
          - json
          - xml
          - csv
          type: string
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            application/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            application/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/csv:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
  /forecast/margin/daily/evolution:
    get:
      tags:
      - Margin Forecast
      summary: Evolution daily margin forecast (OCNMFD2)
      description: "This endpoint provides the daily evolution Generating Plant Operating Margin covering 2 days ahead to 14 days ahead in MW values.\nThe Daily API outputs the latest published data for daily margin forecast for D+2 to D+14.\n            \nDate parameter must be provided in the exact format yyyy-MM-dd."
      parameters:
      - name: forecastDate
        in: query
        description: The forecast date for the filter. This must be in the format yyyy-MM-dd.
        required: true
        schema:
          type: string
          format: date
          example: '2022-09-20'
        example: '2022-09-20'
      - name: format
        in: query
        description: Response data format. Use json/xml to include metadata.
        schema:
          enum:
          - json
          - xml
          - csv
          type: string
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            application/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            application/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
            text/csv:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
  /forecast/margin/weekly:
    get:
      tags:
      - Margin Forecast
      summary: Weekly margin forecast (OCNMFW2, OCNMF3Y2)
      description: 'This endpoint provides the Generating Plant Operating Margin covering 2 weeks ahead to 156 weeks ahead in MW values.

        The weekly API outputs the latest published data for weekly margin forecast for W+2 to W+156'
      parameters:
      - name: range
        in: query
        schema:
          enum:
          - 52W
          - 156W
          type: string
      - name: format
        in: query
        description: Response data format. Use json/xml to include metadata.
        schema:
          enum:
          - json
          - xml
          - csv
          type: string
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            application/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            application/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/csv:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
  /forecast/margin/weekly/history:
    get:
      tags:
      - Margin Forecast
      summary: Historical weekly margin forecast (OCNMFW2, OCNMF3Y2)
      description: 'This endpoint provides the weekly historic  Generating Plant Operating Margin.

        This historic API output 2 weeks ahead to 156 weeks ahead in MW values'
      parameters:
      - name: publishTime
        in: query
        required: true
        schema:
          type: string
          format: date-time
      - name: range
        in: query
        schema:
          enum:
          - 52W
          - 156W
          type: string
      - name: format
        in: query
        description: Response data format. Use json/xml to include metadata.
        schema:
          enum:
          - json
          - xml
          - csv
          type: string
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            application/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            application/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/csv:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
  /forecast/margin/weekly/evolution:
    get:
      tags:
      - Margin Forecast
      summary: Evolution daily margin forecast (OCNMFW2, OCNMF3Y2)
      description: 'This endpoint provides the daily evolution Generating Plant Operating Margin covering 2 days ahead to 14 days ahead in MW values.

        The Daily API outputs the latest published data for daily margin forecast for D+2 t D+14'
      parameters:
      - name: year
        in: query
        required: true
        schema:
          type: integer
          format: int32
      - name: week
        in: query
        required: true
        schema:
          type: integer
          format: int32
      - name: range
        in: query
        schema:
          enum:
          - 52W
          - 156W
          type: string
      - name: format
        in: query
        description: Response data format. Use json/xml to include metadata.
        schema:
          enum:
          - json
          - xml
          - csv
          type: string
      responses:
        '200':
          description: OK
          content:
            text/plain:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            application/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/json:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            application/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/xml:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
            text/csv:
              schema:
                $ref: '#/components/schemas/Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
components:
  schemas:
    Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly:
      type: object
      properties:
        data:
          type:
          - array
          - 'null'
          items:
            $ref: '#/components/schemas/Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly'
        metadata:
          $ref: '#/components/schemas/Insights.Api.Models.Metadata.ApiResponseSourceMetadata'
      additionalProperties: false
    Insights.Api.Models.Responses.ResponseWithMetadata-1_Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily:
      type: object
      properties:
        data:
          type:
          - array
          - 'null'
          items:
            $ref: '#/components/schemas/Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily'
        metadata:
          $ref: '#/components/schemas/Insights.Api.Models.Metadata.ApiResponseSourceMetadata'
      additionalProperties: false
    Insights.Api.Models.Metadata.ApiResponseSourceMetadata:
      type: object
      properties:
        datasets:
          type:
          - array
          - 'null'
          items:
            type: string
          example:
          - DATASET
      additionalProperties: false
    Insights.Api.Models.Responses.ForecastMargin.ForecastMarginDaily:
      type: object
      properties:
        publishTime:
          type: string
          format: date-time
        margin:
          type:
          - integer
          - 'null'
          format: int64
        forecastDate:
          type: string
          format: date
      additionalProperties: false
    Insights.Api.Models.Responses.ForecastMargin.ForecastMarginWeekly:
      type: object
      properties:
        publishTime:
          type: string
          format: date-time
        margin:
          type:
          - integer
          - 'null'
          format: int64
        week:
          type: integer
          format: int32
        year:
          type: integer
          format: int32
        weekStartDate:
          type: string
          format: date
      additionalProperties: false