API reference/Energy & Utilities/Regional Intensity

Regional Intensity

starter

Live data

Cleanest and dirtiest regions, or one region by postcode with its fuel mix.

GET/api/v1/energy/regional

Data source

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

Query parameters

Parameter	Description	Try value
`postcode` string	Outward GB postcode, e.g. RG10 or SW1A
`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/regional?postcode=RG10&apikey=YOUR_API_KEY"

Calls the live source

Example response

{
  "data": {
    "postcode": "RG10",
    "region": "South England",
    "operator": "SSE South",
    "from": "2026-10-22T02:00Z",
    "to": "2026-10-22T02:30Z",
    "gramsCo2PerKwh": 91,
    "index": "moderate",
    "mixPct": {
      "imports": 41.8,
      "wind": 33.6,
      "gas": 15.7,
      "biomass": 5.1,
      "nuclear": 3.8,
      "hydro": 0.1,
      "coal": 0,
      "other": 0,
      "solar": 0
    }
  }
}