openapi: 3.2.0
info:
  title: MISO Public Wind Solar API
  version: '2025-12-12'
  description: 'Real-time market and operations data displays from MISO, served from one host under /api/. Merged from two separately derived documents — Operations Displays and Markets Displays — which described the same API: same server, same (absent) authentication, and the same documentation table. Reported by a reader on 2026-08-04.'
  x-provenance:
    harvestedBy: API Evangelist
    fetchDate: '2026-07-27'
    note: 'MISO publishes no OpenAPI for its Public API. This document was assembled from MISO''s own published artifacts only: every path and every operation summary is taken verbatim from the endpoint table MISO publishes at https://public-api.misoenergy.org/ (section "Operations Displays"), and every response schema and example is derived from the live JSON MISO returned to an anonymous GET on 2026-07-27. No host, path, parameter, field name or value was invented. Examples are the real payloads with long arrays truncated to two elements. No query parameters are documented by MISO for these endpoints and none are asserted here.'
    sources:
    - https://www.misoenergy.org/markets-and-operations/RTDataAPIs/ (HTTP 200)
    - https://public-api.misoenergy.org/ (HTTP 200, endpoint table)
    - Every path in this document individually fetched anonymously; all returned HTTP 200 application/json on 2026-07-27.
servers:
- url: https://public-api.misoenergy.org
  description: MISO Public API — anonymous, no key, no account.
tags:
- name: WindSolar
paths:
  /api/WindSolar/GetCombined:
    get:
      operationId: getWindSolarGetCombined
      summary: Wind and Solar Generation — GetCombined
      description: Source data behind the MISO public "Wind and Solar Generation" display. Endpoint published by MISO at https://public-api.misoenergy.org/ ; returns JSON anonymously with no key or account.
      responses:
        '200':
          description: Successful response. Verified anonymously (HTTP 200, application/json) on 2026-07-27.
          content:
            application/json:
              schema:
                type: object
                properties:
                  instance:
                    type: array
                    items:
                      type: object
                      properties:
                        ForecastDateTimeEST:
                          type: string
                        ForecastHourEndingEST:
                          type: string
                        ForecastWindValue:
                          type: string
                        ForecastSolarValue:
                          type: string
                        ActualDateTimeEST:
                          type: string
                        ActualHourEndingEST:
                          type: string
                        ActualWindValue:
                          type: string
                        ActualSolarValue:
                          type: string
                  RefId:
                    type: string
                  MktDay:
                    type: string
              example:
                instance:
                - ForecastDateTimeEST: 2026-07-27 12:00:00 AM
                  ForecastHourEndingEST: '1'
                  ForecastWindValue: '13582.00'
                  ForecastSolarValue: '0.00'
                  ActualDateTimeEST: 2026-07-27 12:00:00 AM
                  ActualHourEndingEST: '1'
                  ActualWindValue: '11320.30'
                  ActualSolarValue: '-48.77'
                - ForecastDateTimeEST: 2026-07-27 1:00:00 AM
                  ForecastHourEndingEST: '2'
                  ForecastWindValue: '13652.00'
                  ForecastSolarValue: '0.00'
                  ActualDateTimeEST: 2026-07-27 1:00:00 AM
                  ActualHourEndingEST: '2'
                  ActualWindValue: '11166.52'
                  ActualSolarValue: '-48.95'
                RefId: 27-Jul-2026 - Interval 08:00 EST
                MktDay: 07-27-2026
      tags:
      - WindSolar
  /api/WindSolar/getsolar:
    get:
      operationId: getWindSolarGetsolar
      summary: Wind and Solar Generation — getsolar
      description: Source data behind the MISO public "Wind and Solar Generation" display. Endpoint published by MISO at https://public-api.misoenergy.org/ ; returns JSON anonymously with no key or account.
      responses:
        '200':
          description: Successful response. Verified anonymously (HTTP 200, application/json) on 2026-07-27.
          content:
            application/json:
              schema:
                type: object
                properties:
                  instance:
                    type: array
                    items:
                      type: object
                      properties:
                        ForecastDateTimeEST:
                          type: string
                        ForecastHourEndingEST:
                          type: string
                        ForecastValue:
                          type: string
                        ActualDateTimeEST:
                          type: string
                        ActualHourEndingEST:
                          type: string
                        ActualValue:
                          type: string
                  RefId:
                    type: string
                  MktDay:
                    type: string
              example:
                instance:
                - ForecastDateTimeEST: 2026-07-27 12:00:00 AM
                  ForecastHourEndingEST: '1'
                  ForecastValue: '0.00'
                  ActualDateTimeEST: 2026-07-27 12:00:00 AM
                  ActualHourEndingEST: '1'
                  ActualValue: '-48.77'
                - ForecastDateTimeEST: 2026-07-27 1:00:00 AM
                  ForecastHourEndingEST: '2'
                  ForecastValue: '0.00'
                  ActualDateTimeEST: 2026-07-27 1:00:00 AM
                  ActualHourEndingEST: '2'
                  ActualValue: '-48.95'
                RefId: 27-Jul-2026 - Interval 08:00 EST
                MktDay: 07-27-2026
      tags:
      - WindSolar
  /api/WindSolar/getsolaractual:
    get:
      operationId: getWindSolarGetsolaractual
      summary: Wind and Solar Generation — getsolaractual
      description: Source data behind the MISO public "Wind and Solar Generation" display. Endpoint published by MISO at https://public-api.misoenergy.org/ ; returns JSON anonymously with no key or account.
      responses:
        '200':
          description: Successful response. Verified anonymously (HTTP 200, application/json) on 2026-07-27.
          content:
            application/json:
              schema:
                type: object
                properties:
                  instance:
                    type: array
                    items:
                      type: object
                      properties:
                        DateTimeEST:
                          type: string
                        HourEndingEST:
                          type: string
                        Value:
                          type: string
                  RefId:
                    type: string
                  MktDay:
                    type: string
              example:
                instance:
                - DateTimeEST: 2026-07-27 12:00:00 AM
                  HourEndingEST: '1'
                  Value: '-48.77'
                - DateTimeEST: 2026-07-27 1:00:00 AM
                  HourEndingEST: '2'
                  Value: '-48.95'
                RefId: 27-Jul-2026 - Interval 08:00 EST
                MktDay: 07-27-2026
      tags:
      - WindSolar
  /api/WindSolar/getsolarforecast:
    get:
      operationId: getWindSolarGetsolarforecast
      summary: Wind and Solar Generation — getsolarforecast
      description: Source data behind the MISO public "Wind and Solar Generation" display. Endpoint published by MISO at https://public-api.misoenergy.org/ ; returns JSON anonymously with no key or account.
      responses:
        '200':
          description: Successful response. Verified anonymously (HTTP 200, application/json) on 2026-07-27.
          content:
            application/json:
              schema:
                type: object
                properties:
                  Forecast:
                    type: array
                    items:
                      type: object
                      properties:
                        DateTimeEST:
                          type: string
                        HourEndingEST:
                          type: string
                        Value:
                          type: string
                  RefId:
                    type: string
                  MktDay:
                    type: string
              example:
                Forecast:
                - DateTimeEST: 2026-07-27 12:00:00 AM
                  HourEndingEST: '1'
                  Value: '0.00'
                - DateTimeEST: 2026-07-27 1:00:00 AM
                  HourEndingEST: '2'
                  Value: '0.00'
                RefId: 27-Jul-2026 - Interval 08:00 EST
                MktDay: 07-27-2026
      tags:
      - WindSolar
  /api/WindSolar/getwind:
    get:
      operationId: getWindSolarGetwind
      summary: Wind and Solar Generation — getwind
      description: Source data behind the MISO public "Wind and Solar Generation" display. Endpoint published by MISO at https://public-api.misoenergy.org/ ; returns JSON anonymously with no key or account.
      responses:
        '200':
          description: Successful response. Verified anonymously (HTTP 200, application/json) on 2026-07-27.
          content:
            application/json:
              schema:
                type: object
                properties:
                  instance:
                    type: array
                    items:
                      type: object
                      properties:
                        ForecastDateTimeEST:
                          type: string
                        ForecastHourEndingEST:
                          type: string
                        ForecastValue:
                          type: string
                        ActualDateTimeEST:
                          type: string
                        ActualHourEndingEST:
                          type: string
                        ActualValue:
                          type: string
                  RefId:
                    type: string
                  MktDay:
                    type: string
              example:
                instance:
                - ForecastDateTimeEST: 2026-07-27 12:00:00 AM
                  ForecastHourEndingEST: '1'
                  ForecastValue: '13582.00'
                  ActualDateTimeEST: 2026-07-27 12:00:00 AM
                  ActualHourEndingEST: '1'
                  ActualValue: '11320.30'
                - ForecastDateTimeEST: 2026-07-27 1:00:00 AM
                  ForecastHourEndingEST: '2'
                  ForecastValue: '13652.00'
                  ActualDateTimeEST: 2026-07-27 1:00:00 AM
                  ActualHourEndingEST: '2'
                  ActualValue: '11166.52'
                RefId: 27-Jul-2026 - Interval 08:00 EST
                MktDay: 07-27-2026
      tags:
      - WindSolar
  /api/WindSolar/getwindactual:
    get:
      operationId: getWindSolarGetwindactual
      summary: Wind and Solar Generation — getwindactual
      description: Source data behind the MISO public "Wind and Solar Generation" display. Endpoint published by MISO at https://public-api.misoenergy.org/ ; returns JSON anonymously with no key or account.
      responses:
        '200':
          description: Successful response. Verified anonymously (HTTP 200, application/json) on 2026-07-27.
          content:
            application/json:
              schema:
                type: object
                properties:
                  instance:
                    type: array
                    items:
                      type: object
                      properties:
                        DateTimeEST:
                          type: string
                        HourEndingEST:
                          type: string
                        Value:
                          type: string
                  RefId:
                    type: string
                  MktDay:
                    type: string
              example:
                instance:
                - DateTimeEST: 2026-07-27 12:00:00 AM
                  HourEndingEST: '1'
                  Value: '11320.30'
                - DateTimeEST: 2026-07-27 1:00:00 AM
                  HourEndingEST: '2'
                  Value: '11166.52'
                RefId: 27-Jul-2026 - Interval 08:00 EST
                MktDay: 07-27-2026
      tags:
      - WindSolar
  /api/WindSolar/getwindforecast:
    get:
      operationId: getWindSolarGetwindforecast
      summary: Wind and Solar Generation — getwindforecast
      description: Source data behind the MISO public "Wind and Solar Generation" display. Endpoint published by MISO at https://public-api.misoenergy.org/ ; returns JSON anonymously with no key or account.
      responses:
        '200':
          description: Successful response. Verified anonymously (HTTP 200, application/json) on 2026-07-27.
          content:
            application/json:
              schema:
                type: object
                properties:
                  Forecast:
                    type: array
                    items:
                      type: object
                      properties:
                        DateTimeEST:
                          type: string
                        HourEndingEST:
                          type: string
                        Value:
                          type: string
                  RefId:
                    type: string
                  MktDay:
                    type: string
              example:
                Forecast:
                - DateTimeEST: 2026-07-27 12:00:00 AM
                  HourEndingEST: '1'
                  Value: '13582.00'
                - DateTimeEST: 2026-07-27 1:00:00 AM
                  HourEndingEST: '2'
                  Value: '13652.00'
                RefId: 27-Jul-2026 - Interval 08:00 EST
                MktDay: 07-27-2026
      tags:
      - WindSolar