When is AWS eu-west-1 greenest?
Carbon-aware scheduling · updated 2026-08-04 08:37 UTC
The AWS eu-west-1 region runs in Dublin, Ireland, on the Ireland electricity grid. educk forecasts when that grid is greenest — using day-ahead wind & solar and demand data from ENTSO-E — so you can schedule carbon-aware workloads (batch jobs, CI, model training, backups, data pipelines) for the cleanest hours.
- Wind and solar are forecast to cover about 44% of Ireland's electricity demand around 23:00 UTC.
- Renewable output peaks around 09:00 UTC at roughly 67% of demand — the greenest time to use electricity today.
- The renewable share dips to about 44% around 23:00 UTC, when grid electricity is at its most carbon-intensive.
Hourly grid forecast for AWS eu-west-1
| Time (UTC) | Renewable (MW) | Demand (MW) | Surplus (MW) | Share |
|---|---|---|---|---|
| Tue 23:00 | 1554 | 3513 | -1959 | 44% |
| Wed 00:00 | 1635 | 3431 | -1796 | 48% |
| Wed 01:00 | 1772 | 3401 | -1629 | 52% |
| Wed 02:00 | 1936 | 3387 | -1451 | 57% |
| Wed 03:00 | 2115 | 3418 | -1303 | 62% |
| Wed 04:00 | 2269 | 3582 | -1313 | 63% |
| Wed 05:00 | 2407 | 3923 | -1516 | 61% |
| Wed 06:00 | 2569 | 4310 | -1741 | 60% |
| Wed 07:00 | 2754 | 4565 | -1811 | 60% |
| Wed 08:00 | 2937 | 4623 | -1686 | 64% |
| Wed 09:00 | 3113 | 4619 | -1506 | 67% |