openapi: 3.2.0 info: title: ISO New England Web Services API v1.1 Sevendaywindpowerforecast API version: '1.1' description: RESTful interface to ISO New England energy and market data. This OpenAPI document was DERIVED by API Evangelist from ISO New England's own published, machine-generated Enunciate technical documentation at https://webservices.iso-ne.com/docs/v1.1/ and the two XML Schemas it publishes (ns0.xsd, ns1.xsd, saved verbatim under schemas/). ISO New England does not publish an OpenAPI definition; the only provider-published machine-readable description of the interface is a WADL at https://webservices.iso-ne.com/api/v1.1?_wadl&_type=xml, which sits behind the same HTTP Basic authentication as the API and returned HTTP 401 to anonymous probes. Every path, method, parameter, description, media type and schema in this document is copied from the provider's published sources; nothing was invented. Each operation carries x-evidence naming the exact documentation page it came from. All feeds are available in XML and JSON, selected by adding a .xml or .json extension to the request URL or by sending an Accept header of application/xml or application/json. contact: name: ISO New England Ask ISO url: https://askiso.iso-ne.com/s/ x-provenance: method: derived derived_by: API Evangelist enrichment pipeline derived_on: '2026-07-27' sources: - https://webservices.iso-ne.com/docs/v1.1/ - https://webservices.iso-ne.com/docs/v1.1/ns0.xsd - https://webservices.iso-ne.com/docs/v1.1/ns1.xsd - https://www.iso-ne.com/participate/support/web-services-data not_provider_published: true note: Derived from provider-published HTML documentation and XSDs. Not an ISO New England artifact. servers: - url: https://webservices.iso-ne.com/api/v1.1 description: Production base path (HTTP Basic over SSL) security: - basicAuth: [] tags: - name: sevendaywindpowerforecast description: 4 path template(s) under /sevendaywindpowerforecast in the published ISO New England Web Services API v1.1 documentation. paths: /sevendaywindpowerforecast: get: operationId: getSevendaywindpowerforecast summary: Default resource description: Default resource. Redirects to SDF. tags: - sevendaywindpowerforecast responses: '200': description: Successful response. content: application/xml: schema: description: Response payload is not described in the published documentation. application/json: schema: description: Response payload is not described in the published documentation. '401': description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27. x-evidence: source: https://webservices.iso-ne.com/docs/v1.1/rest.sevendaywindpowerforecast.html harvested: '2026-07-27' /sevendaywindpowerforecast/current: get: operationId: getSevendaywindpowerforecastCurrent summary: Get the current SDWPHF description: Get the current SDWPHF. tags: - sevendaywindpowerforecast responses: '200': description: a SevenDayForecastsElement containing the current SDFs. content: application/xml: schema: $ref: '#/components/schemas/SevenDayWindForecasts' application/json: schema: $ref: '#/components/schemas/SevenDayWindForecasts' '401': description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27. x-evidence: source: https://webservices.iso-ne.com/docs/v1.1/rest.sevendaywindpowerforecast.current.html harvested: '2026-07-27' x-xml-element: SevenDayWindForecasts /sevendaywindpowerforecast/day/{day}: get: operationId: getSevendaywindpowerforecastDayByDay summary: Get most recent Day SDFs description: Get most recent Day SDFs. tags: - sevendaywindpowerforecast responses: '200': description: a SevenDayWindForecastsElement containing the SDFs. content: application/xml: schema: $ref: '#/components/schemas/SevenDayWindForecasts' application/json: schema: $ref: '#/components/schemas/SevenDayWindForecasts' '401': description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27. x-evidence: source: https://webservices.iso-ne.com/docs/v1.1/rest.sevendaywindpowerforecast.day.day.html harvested: '2026-07-27' x-xml-element: SevenDayWindForecasts parameters: - name: day in: path required: true schema: type: string description: Retrieve data for the day in(YYYYMMDD) /sevendaywindpowerforecast/info: get: operationId: getSevendaywindpowerforecastInfo summary: Get the Service Info for SDF description: Get the Service Info for SDF. tags: - sevendaywindpowerforecast responses: '200': description: the ServiceInfoElement for SDWPHF. content: application/xml: schema: $ref: '#/components/schemas/ServiceInfo' application/json: schema: $ref: '#/components/schemas/ServiceInfo' '401': description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27. x-evidence: source: https://webservices.iso-ne.com/docs/v1.1/rest.sevendaywindpowerforecast.info.html harvested: '2026-07-27' x-xml-element: ServiceInfo components: schemas: MarketDays: type: object properties: MarketDate: type: string format: date-time MarketDateInfo: $ref: '#/components/schemas/MarketDateInfo' '@Day': type: integer required: - MarketDate - '@Day' x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_MarketDays ServiceInfo: type: object properties: LatestBeginDate: type: string format: date-time CreationDate: type: string format: date-time required: - LatestBeginDate - CreationDate x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_ServiceInfo MarketDateData: type: object properties: HourEnding: type: string WindPowerForecast: type: number required: - WindPowerForecast x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_MarketDateData SevenDayWindForecast: type: object properties: BeginDate: type: string format: date-time MarketDays: type: array items: $ref: '#/components/schemas/MarketDays' CreationDate: type: string format: date-time x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_SevenDayWindForecast MarketDateInfo: type: object properties: MarketDateData: type: array items: $ref: '#/components/schemas/MarketDateData' x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_MarketDateInfo SevenDayWindForecasts: type: object properties: SevenDayWindForecast: type: array items: $ref: '#/components/schemas/SevenDayWindForecast' x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_SevenDayWindForecasts securitySchemes: basicAuth: type: http scheme: basic description: HTTP Basic Authentication over SSL. Credentials come from a free, self-serve ISO Express account; ISO New England states that ISO Express account holders are automatically granted access to the public data feeds. See https://www.iso-ne.com/participate/applications-status-changes/access-software-systems