openapi: 3.2.0 info: title: ISO New England Web Services API v1.1 Reliabilityregionloadforecast 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: reliabilityregionloadforecast description: 5 path template(s) under /reliabilityregionloadforecast in the published ISO New England Web Services API v1.1 documentation. paths: /reliabilityregionloadforecast: get: operationId: getReliabilityregionloadforecast summary: Default resource description: Default resource. Redirects to RRFLS. tags: - reliabilityregionloadforecast 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.reliabilityregionloadforecast.html harvested: '2026-07-27' /reliabilityregionloadforecast/current: get: operationId: getReliabilityregionloadforecastCurrent summary: Get the current RRFL description: Get the current RRFL. tags: - reliabilityregionloadforecast responses: '200': description: a SevenDayForecastsElement containing the current RRFLs. content: application/xml: schema: $ref: '#/components/schemas/ReliabilityRegionLoadForecasts' application/json: schema: $ref: '#/components/schemas/ReliabilityRegionLoadForecasts' '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.reliabilityregionloadforecast.current.html harvested: '2026-07-27' x-xml-element: ReliabilityRegionLoadForecasts /reliabilityregionloadforecast/day/{day}: get: operationId: getReliabilityregionloadforecastDayByDay summary: Get most recent Day RRFLs description: Get most recent Day RRFLs. tags: - reliabilityregionloadforecast responses: '200': description: a SevenDayWindForecastsElement containing the RRFLs. content: application/xml: schema: $ref: '#/components/schemas/ReliabilityRegionLoadForecasts' application/json: schema: $ref: '#/components/schemas/ReliabilityRegionLoadForecasts' '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.reliabilityregionloadforecast.day.day.html harvested: '2026-07-27' x-xml-element: ReliabilityRegionLoadForecasts parameters: - name: day in: path required: true schema: type: string description: Retrieve data for the day in(YYYYMMDD) /reliabilityregionloadforecast/day/{day}/all: get: operationId: getReliabilityregionloadforecastDayByDayAll summary: Get entire Day RRFL description: Get entire Day RRFL. tags: - reliabilityregionloadforecast responses: '200': description: a SevenDayForecastsElement containing the RRFLs. content: application/xml: schema: $ref: '#/components/schemas/ReliabilityRegionLoadForecasts' application/json: schema: $ref: '#/components/schemas/ReliabilityRegionLoadForecasts' '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.reliabilityregionloadforecast.day.day.all.html harvested: '2026-07-27' x-xml-element: ReliabilityRegionLoadForecasts parameters: - name: day in: path required: true schema: type: string description: Retrieve data for the day in(YYYYMMDD) /reliabilityregionloadforecast/info: get: operationId: getReliabilityregionloadforecastInfo summary: Get the Service Info for RRFL description: Get the Service Info for RRFL. tags: - reliabilityregionloadforecast responses: '200': description: the ServiceInfoElement for RRFL. 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.reliabilityregionloadforecast.info.html harvested: '2026-07-27' x-xml-element: ServiceInfo components: schemas: ReliabilityRegionLoadForecasts: type: object properties: ReliabilityRegionLoadForecast: type: array items: $ref: '#/components/schemas/ReliabilityRegionLoadForecast' x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_ReliabilityRegionLoadForecasts 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 ReliabilityRegionLoadForecast: type: object properties: BeginDate: type: string format: date-time CreationDate: type: string format: date-time ReliabilityRegion: type: string LoadMw: type: number ReliabilityRegionLoadPercentage: type: number required: - BeginDate - CreationDate x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_ReliabilityRegionLoadForecast 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