European Grid Index · September 2026
Monthly mean in g CO2e/kWh, production-based lifecycle estimate, imports not counted. Ranked cleanest first; the same method every month.
| Market | Sep 2026 | Sep 2025 | On the year |
|---|---|---|---|
| Norway (NO2) | 24 | 23 | +5% |
| Sweden (SE3) | 30 | 24 | +25% |
| France | 36 | 24 | +51% |
| Finland | 54 | 52 | +4% |
| Austria | 77 | 53 | +44% |
| Great Britain | 154 | 166 | -7% |
| Spain | 154 | 136 | +13% |
| Ireland | 234 | 250 | -7% |
| Belgium | 250 | 123 | +103% |
| Italy (North) | 324 | 296 | +10% |
| Germany | 348 | 303 | +15% |
| Poland | 547 | 562 | -3% |
Computed but not ranked: the Netherlands, Switzerland and Denmark (DK1). The issue explains why.
Source: ENTSO-E Transparency Platform; NESO Carbon Intensity API, CC BY 4.0. Calculations ScienceShot.
Cite as: ScienceShot, European Grid Index for data centres, September 2026, https://scienceshot.com/post/european-grid-index-september-2026