LOWEST CARBON HOURFeb 4, 2026
Sweden South · 11 g
A near-total-wind night dropped SE_4 to 11 g CO₂/kWh — the cleanest hour in our record.
Wattography · Grid records
Things we've noticed in Europe's grid this year
A running record of the most striking hours on Europe's grid, computed from validated data.
HIGHEST SOLAR HOURApr 27, 2026
Italy Sicily · 89.1%
Sicily ran 89.1% on solar at 09:00 — 2.16 of its 2.42 GW.
HIGHEST WIND HOURFeb 16, 2026
Sweden South · 98.3%
Southern Sweden ran 98.3% on wind through a winter night — 1.32 of 1.34 GW.
HIGHEST RENEWABLE HOURJan 1, 2026
Sweden North · 100%
Northern Sweden ran 100% renewable on a January morning — 2.3 GW of hydro and 0.7 GW of wind, with nothing else on the system.
MOST NEGATIVE PRICEMay 1, 2026
Czech Republic · −€500/MWh
A May Day solar glut drove ten Central-European zones negative at noon — Czechia, Hungary and Slovakia to the −€500 floor, Germany, France and the Benelux just above.
WINTER PRICE SPLITFeb 17, 2026
Denmark East → Portugal · €639/MWh
On a February evening, a winter-scarcity squeeze drove Denmark East to €647/MWh while solar-flush Portugal sat near €8 — one of the widest cross-zone splits in our record, the grid's two ends €639 apart in a single hour.
LARGEST FLOWMar 15, 2026
Sweden Mid-North → Sweden Mid-South · 7.86 GW
Sweden's north→south hydro-and-wind corridor peaked at 7.86 GW on a March evening — the single biggest power flow in our record.
BIGGEST NET EXPORTERJan–May 2026
France · 43 TWh
France sent a net 43 TWh across its borders from January to May — Europe's biggest net power exporter, more than double the next zone.