{
  "dataset": "grid-carbon-free",
  "title": "Hourly carbon-free energy by grid region",
  "index": "Environmental Disclosure Index",
  "url": "https://aisafetytracker.org/environment/",
  "citation": "AI Safety Tracker, \"Environmental Disclosure Index\". https://aisafetytracker.org/environment/. Retrieved 23 October 2026.",
  "licences": [
    {
      "source": "environmental-disclosure-index",
      "name": "Environmental Disclosure Index",
      "publisher": "This site",
      "licence": "MIT",
      "licence_url": "https://opensource.org/licenses/MIT",
      "attribution": "AI Safety Tracker, \"Environmental Disclosure Index\". Licensed MIT."
    }
  ],
  "generated": "2026-10-23T13:22:31+00:00",
  "retrieved": "2026-10-23T00:00:00+00:00",
  "unit": "percent",
  "notes": "Our own reading of primary publications, reviewed 2026-10-23. Google's hourly carbon-free energy by data-centre grid region, 2025, from its 2026 Environmental Report.",
  "count": 22,
  "records": [
    {
      "operator": "Google",
      "year": 2025,
      "country": "Finland",
      "grid": "Fingrid",
      "google_cfe_pct": 98,
      "grid_cfe_pct": 95,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Denmark",
      "grid": "Energinet",
      "google_cfe_pct": 92,
      "grid_cfe_pct": 89,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Chile",
      "grid": "Sistema Interconectado Central",
      "google_cfe_pct": 90,
      "grid_cfe_pct": 62,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "MISO",
      "google_cfe_pct": 88,
      "grid_cfe_pct": 36,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "Salt River Project, Arizona",
      "google_cfe_pct": 86,
      "grid_cfe_pct": 56,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "Southwest Power Pool",
      "google_cfe_pct": 84,
      "grid_cfe_pct": 47,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "Bonneville Power Administration",
      "google_cfe_pct": 83,
      "grid_cfe_pct": 84,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "ERCOT, Texas",
      "google_cfe_pct": 83,
      "grid_cfe_pct": 46,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Netherlands",
      "grid": "TenneT",
      "google_cfe_pct": 82,
      "grid_cfe_pct": 55,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Belgium",
      "grid": "Elia",
      "google_cfe_pct": 79,
      "grid_cfe_pct": 72,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United Kingdom",
      "grid": "National Grid ESO",
      "google_cfe_pct": 75,
      "grid_cfe_pct": 71,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Germany",
      "grid": "Germany",
      "google_cfe_pct": 70,
      "grid_cfe_pct": 64,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "Duke Energy Carolinas",
      "google_cfe_pct": 65,
      "grid_cfe_pct": 57,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "NV Energy",
      "google_cfe_pct": 65,
      "grid_cfe_pct": 32,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Ireland",
      "grid": "EirGrid",
      "google_cfe_pct": 60,
      "grid_cfe_pct": 50,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "Tennessee Valley Authority",
      "google_cfe_pct": 58,
      "grid_cfe_pct": 47,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "PJM",
      "google_cfe_pct": 57,
      "grid_cfe_pct": 40,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "Southern Company",
      "google_cfe_pct": 42,
      "grid_cfe_pct": 33,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "United States",
      "grid": "South Carolina",
      "google_cfe_pct": 31,
      "grid_cfe_pct": 25,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Japan",
      "grid": "TEPCO",
      "google_cfe_pct": 23,
      "grid_cfe_pct": 18,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Taiwan",
      "grid": "Taiwan Power Company",
      "google_cfe_pct": 15,
      "grid_cfe_pct": 15,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    },
    {
      "operator": "Google",
      "year": 2025,
      "country": "Singapore",
      "grid": "Energy Market Authority",
      "google_cfe_pct": 5,
      "grid_cfe_pct": 5,
      "url": "https://storage.googleapis.com/gweb-mobius-cdn/sustainability/uploads/7f477eb723fe0c23d03f94b90a08882b9f28187d.pdf",
      "reviewed": "2026-10-23",
      "source_id": "environmental-disclosure-index"
    }
  ]
}