When is electricity greenest in Spain?
Renewable energy forecast · updated 2026-07-21 16:05 UTC
educk tracks how much of Spain's electricity demand is met by wind and solar generation, using day-ahead forecasts from the ENTSO-E transparency platform. Use it to plan flexible energy use — charging an EV, running appliances or batteries — for when the grid is cleanest.
- Wind and solar are forecast to cover about 64% of Spain's electricity demand around 16:15 UTC.
- Renewable output peaks around 15:30 UTC at roughly 67% of demand — the greenest time to use electricity today.
- The renewable share dips to about 24% around 20:45 UTC, when grid electricity is at its most carbon-intensive.
Hourly forecast for Spain
| Time (UTC) | Renewable (MW) | Demand (MW) | Surplus (MW) | Share |
|---|---|---|---|---|
| Tue 15:30 | 25128 | 37340 | -12212 | 67% |
| Tue 15:45 | 24824 | 37446 | -12622 | 66% |
| Tue 16:00 | 24758 | 37551 | -12793 | 66% |
| Tue 16:15 | 24235 | 37651 | -13416 | 64% |
| Tue 16:30 | 23562 | 37751 | -14189 | 62% |
| Tue 16:45 | 22732 | 37850 | -15118 | 60% |
| Tue 17:00 | 21656 | 37960 | -16304 | 57% |
| Tue 17:15 | 20377 | 38053 | -17676 | 54% |
| Tue 17:30 | 18841 | 38138 | -19297 | 49% |
| Tue 17:45 | 17157 | 38206 | -21049 | 45% |
| Tue 18:00 | 16634 | 38336 | -21702 | 43% |
| Tue 18:15 | 14662 | 38334 | -23672 | 38% |
| Tue 18:30 | 12935 | 38280 | -25345 | 34% |
| Tue 18:45 | 11499 | 38170 | -26671 | 30% |
| Tue 19:00 | 10446 | 38133 | -27687 | 27% |
| Tue 19:15 | 9662 | 37900 | -28238 | 25% |
| Tue 19:30 | 9195 | 37600 | -28405 | 24% |
| Tue 19:45 | 8973 | 37226 | -28253 | 24% |
| Tue 20:00 | 8973 | 36947 | -27974 | 24% |
| Tue 20:15 | 8940 | 36396 | -27456 | 25% |
| Tue 20:30 | 8908 | 35756 | -26848 | 25% |
| Tue 20:45 | 8449 | 35072 | -26623 | 24% |
| Tue 21:00 | 8889 | 34266 | -25377 | 26% |
| Tue 21:15 | 8801 | 33667 | -24866 | 26% |
| Tue 21:30 | 8672 | 33178 | -24506 | 26% |
| Tue 21:45 | 8505 | 32773 | -24268 | 26% |