v1
latestOpenAPI 3.0.42026-07-233182951.4 MBDemand Forecast
Historic view of the earliest forecasted demand (NDF, TSDF) stream
This endpoint allows for retrieving a stream of earliest day-ahead demand forecast data from National Grid ESO. Results are filtered by settlement time, and only the earliest published forecast for each settlement period is shown. This endpoint has an optimised JSON payload and aimed at frequent request for the day-ahead demand forecast data.
get/forecast/demand/day-ahead/earliest/stream
Query parameters
boundarystring
Omitting this will return only national data. Specifying boundary=zonal will return only zonal data.
fromstring date-time required
tostring date-time required
Response
Data retrieved