Uk Power

Query UK power generation actuals and NESO day-ahead forecasts (wind, solar).

Query UK power generation data

post

Query UK (GB) power generation timeseries data including:

• Wind and solar generation actuals (transmission + embedded)

• Transmission system demand (load)

• Day-ahead wind and solar forecasts (NESO)

All variables cover Great Britain (England, Scotland, Wales). Northern Ireland is not included — it runs on the separate all-island I-SEM market. All values are in MW, on the half-hourly settlement-period grid (UTC).

Actuals:

• wind: Total wind generation, transmission + embedded (Elexon FUELHH + NESO Gen Mix)

• wind_transmission: Transmission-connected wind generation (Elexon FUELHH)

• wind_embedded: Distribution-embedded wind generation (NESO Gen Mix)

• solar: Total solar generation (Sheffield Solar PV_Live)

• load: Transmission system demand / TSD (NESO Demand)

Day-ahead forecasts (NESO):

• wind_forecast: Day-ahead total wind forecast, transmission + embedded (NESO Day Ahead Wind + NESO Embedded Forecast)

• wind_transmission_forecast: Day-ahead transmission wind forecast (NESO Day Ahead Wind)

• wind_embedded_forecast: Day-ahead embedded wind forecast (NESO Embedded Forecast)

• solar_forecast: Day-ahead embedded solar forecast (NESO Embedded Forecast)

Response Formats:

• json: Columnar JSON format {column: [values], ...}

• arrow: Apache Arrow IPC stream for efficient processing

Authentication: Requires API key.

For more information, see docs.jua.ai.

Authorizations

HTTPBearer

Query parameters

formatstring · enumOptional

Response format: 'json' or 'arrow'

Default: jsonPossible values:

include_unitsbooleanOptional

When true, JSON responses are wrapped in {data, units}.

Default: false

Body

application/json

Query parameters for UK power generation timeseries data.

Variables are aggregated totals:

• wind: transmission + embedded wind generation
• solar: total solar generation
• wind_forecast: day-ahead total wind forecast
• solar_forecast: day-ahead solar forecast

start_timestring · date-timeRequired

Start time for the query (inclusive)

Example: 2025-12-01T00:00:00Z

end_timestring · date-time · nullableOptional

End time for the query (exclusive). If None, no upper bound.

Example: 2025-12-15T00:00:00Z

aggregationstring · enumOptional

Temporal aggregation to apply

Default: nonePossible values:

temporal_resolution_minutesinteger · nullableOptional

Target temporal resolution in minutes. When set, data is linearly interpolated in ClickHouse to the requested cadence (native NESO data is 30-minute; use 15 for 15-minute interpolation). Set to None (the default) to return data at its native resolution.

time_zonestring · nullableOptional

IANA time zone for time formatting (e.g. 'Europe/London').

Example: UTC

Responses

200

Successfully retrieved UK power data

application/jsonapplication/vnd.apache.arrow.stream

anyOptional

400

Invalid query parameters

401

Authentication required

422

Validation Error

application/json

post/v1/uk-power/data

HTTPcURLJavaScriptPython

POST /v1/uk-power/data HTTP/1.1
Content-Type: application/json
Accept: */*
Content-Length: 100

{
  "variables": [
    "wind",
    "solar"
  ],
  "start_time": "2025-12-01T00:00:00Z",
  "end_time": "2025-12-07T00:00:00Z"
}

Query wind and solar actualsQuery transmission/embedded breakdown + loadQuery day-ahead forecastsQuery transmission/embedded forecast breakdown

{
  "time": [
    "2025-12-01T00:00:00Z",
    "2025-12-01T00:30:00Z"
  ],
  "variable_name": [
    "wind",
    "wind"
  ],
  "value": [
    12500,
    12700
  ],
  "unit": [
    "MW",
    "MW"
  ]
}

List available UK power variables

get

Get a list of available UK power generation variables with metadata.

Authentication: Requires API key.

Authorizations

HTTPBearer

Responses

200

Successful Response

application/json

Result for available UK power variables query.

422

Validation Error

application/json

get/v1/uk-power/variables

HTTPcURLJavaScriptPython

GET /v1/uk-power/variables HTTP/1.1
Accept: */*

{
  "variables": [
    {
      "name": "text",
      "description": "text",
      "unit": "text"
    }
  ]
}

List available UK power data sources

get

Get a list of available data sources for UK power generation.

Authentication: Requires API key.

Authorizations

HTTPBearer

Responses

200

Successful Response

application/json

Result for available UK power data sources query.

sourcesstring[]Required

422

Validation Error

application/json

get/v1/uk-power/sources

HTTPcURLJavaScriptPython

GET /v1/uk-power/sources HTTP/1.1
Accept: */*

{
  "sources": [
    "text"
  ]
}