API reference/Energy & Utilities/Carbon Intensity

Carbon Intensity

free

Live data

Current gCO₂/kWh (actual and forecast) and index.

GET/api/v1/energy/carbon-intensity

Data source

Carbon Intensity APINational Energy System Operator (GB) · CC-BY-4.0 · updates 30 min

Query parameters

Parameter	Description	Try value
`apikey` string required	Your API key. Can also be sent as the `X-API-Key` header.	demo key used here

Response envelope

Success: { data, meta: { sources, fetchedAt, cached } }. Errors: { error: { code, message } } with HTTP 400, 401, 404, 502, 503 or 504.

curl "https://api.sectorapi.com/api/v1/energy/carbon-intensity?apikey=YOUR_API_KEY"

Calls the live source

Example response

{
  "data": {
    "region": "Great Britain",
    "from": "2026-10-22T02:00Z",
    "to": "2026-10-22T02:30Z",
    "gramsCo2PerKwh": {
      "actual": 56,
      "forecast": 46
    },
    "index": "low"
  }
}