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Great Britain Electricity Carbon Intensity — Daily Average since 2018 (National Grid ESO)

Daily average of the actual national carbon intensity of Great Britain electricity (gCO2/kWh), computed from the official half-hourly values, since 2018. Options for series: actual (Actual national carbon intensity, daily mean (gCO2/kWh, computed from half-hours)).

Call it (no API key)

GET https://api.agentdatahub.de/api/v1/call/uk-carbon-intensity-history?series=actual&compact=1

Full metadata: without compact=1 · Markdown: format=llm · Only some fields: add &fields=a,b.c · MCP: tool call_api with {"apiId":"uk-carbon-intensity-history"}

Parameters

Example response (live, compact)

{
  "apiId": "uk-carbon-intensity-history",
  "data_freshness": "cached",
  "data": {
    "series": "Actual national carbon intensity, daily mean (gCO2/kWh, computed from half-hours)",
    "unit": "gCO2/kWh",
    "frequency": "D",
    "latest": {
      "period": "2026-10-28",
      "value": 132.6
    },
    "history": [
      {
        "period": "2026-10-16",
        "value": 119.6
      },
      {
        "period": "2026-10-17",
        "value": 64.7
      },
      {
        "period": "2026-10-18",
        "value": 92.6
      },
      {
        "period": "2026-10-19",
        "value": 148.1
      },
      {
        "period": "2026-10-20",
        "value": 122
      },
      {
        "period": "2026-10-21",
        "value": 98.1
      },
      {
        "period": "2026-10-22",
        "value": 105.8
      },
      {
        "period": "2026-10-23",
        "value": 81.5
      },
      {
        "period": "2026-10-24",
        "value": 73
      },
      {
        "period": "2026-10-25",
        "value": 72.2
      },
      {
        "period": "2026-10-26",
        "value": 81.1
      },
      {
        "period": "2026-10-27",
        "value": 80.5
      },
      {
        "period": "2026-10-28",
        "value": 132.6
      }
    ],
    "available": {
      "from": "2018-01-01",
      "to": "2026-10-28",
      "points": 3191
    },
    "note": "Daily mean computed here from the half-hourly actual values of the UK local day (as the publisher defines the day).",
    "verification": {
      "checked_at": "2026-10-29T20:44:16.412Z",
      "checks": [
        {
          "period": "2026-10-01",
          "field": "value",
          "expected": 169.1,
          "ok": true,
          "evidence": "carbonintensity.org.uk /intensity/date/2026-10-01: mean of 48 actual half-hours = 169.06"
        }
      ]
    },
    "source": {
      "publisher": "National Grid ESO Carbon Intensity API",
      "licence": "CC BY 4.0 (data); API access itself may not be resold",
      "licence_url": "https://carbonintensity.org.uk/"
    },
    "attribution": "Source: National Grid ESO Carbon Intensity API (CC BY 4.0)"
  },
  "source": "National Grid ESO Carbon Intensity API",
  "license": "CC BY 4.0 (data); API access itself may not be resold"
}

Recorded history available: /api/v1/history/uk-carbon-intensity-history?series=actual

Source & license