When is AWS eu-west-1 greenest?
Carbon-aware scheduling · updated 2026-10-16 21:31 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 24% of Ireland's electricity demand around 22:00 UTC.
- Renewable output peaks around 22:00 UTC at roughly 24% of demand — the greenest time to use electricity today.
- The renewable share dips to about 5% around 18:00 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 |
|---|---|---|---|---|
| Fri 20:00 | 990 | 4334 | -3344 | 23% |
| Fri 21:00 | 969 | 4038 | -3069 | 24% |
| Fri 22:00 | 944 | 3877 | -2933 | 24% |
| Fri 23:00 | 602 | 3783 | -3181 | 16% |
| Sat 00:00 | 548 | 3684 | -3136 | 15% |
| Sat 01:00 | 506 | 3612 | -3106 | 14% |
| Sat 02:00 | 463 | 3561 | -3098 | 13% |
| Sat 03:00 | 432 | 3563 | -3131 | 12% |
| Sat 04:00 | 419 | 3707 | -3288 | 11% |
| Sat 05:00 | 420 | 3965 | -3545 | 11% |
| Sat 06:00 | 426 | 4147 | -3721 | 10% |
| Sat 07:00 | 439 | 4307 | -3868 | 10% |
| Sat 08:00 | 435 | 4430 | -3995 | 10% |
| Sat 09:00 | 387 | 4467 | -4080 | 9% |
| Sat 11:00 | 336 | 4417 | -4081 | 8% |
| Sat 12:00 | 346 | 4359 | -4013 | 8% |
| Sat 13:00 | 325 | 4324 | -3999 | 8% |
| Sat 14:00 | 291 | 4367 | -4076 | 7% |
| Sat 15:00 | 270 | 4464 | -4194 | 6% |
| Sat 16:00 | 246 | 4594 | -4348 | 5% |
| Sat 17:00 | 226 | 4708 | -4482 | 5% |
| Sat 18:00 | 222 | 4649 | -4427 | 5% |
| Sat 19:00 | 255 | 4418 | -4163 | 6% |
| Sat 20:00 | 307 | 4118 | -3811 | 7% |
| Sat 21:00 | 342 | 3872 | -3530 | 9% |