When is AWS eu-west-1 greenest?
Carbon-aware scheduling · updated 2026-06-06 14:01 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 56% of Ireland's electricity demand around 15:00 UTC.
- Renewable output peaks around 12:00 UTC at roughly 77% of demand — the greenest time to use electricity today.
- The renewable share dips to about 46% 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 |
|---|---|---|---|---|
| Sat 14:00 | 2672 | 4208 | -1536 | 63% |
| Sat 15:00 | 2394 | 4264 | -1870 | 56% |
| Sat 16:00 | 2124 | 4282 | -2158 | 50% |
| Sat 17:00 | 1960 | 4212 | -2252 | 47% |
| Sat 18:00 | 1894 | 4075 | -2181 | 46% |
| Sat 19:00 | 1932 | 3935 | -2003 | 49% |
| Sat 20:00 | 2063 | 3827 | -1764 | 54% |
| Sat 21:00 | 2279 | 3766 | -1487 | 61% |
| Sat 22:00 | 2486 | 3648 | -1162 | 68% |
| Sat 23:00 | 2553 | 3548 | -995 | 72% |
| Sun 00:00 | 2551 | 3460 | -909 | 74% |
| Sun 01:00 | 2545 | 3407 | -862 | 75% |
| Sun 02:00 | 2536 | 3365 | -829 | 75% |
| Sun 03:00 | 2500 | 3326 | -826 | 75% |
| Sun 04:00 | 2453 | 3381 | -928 | 73% |
| Sun 05:00 | 2465 | 3529 | -1064 | 70% |
| Sun 06:00 | 2539 | 3620 | -1081 | 70% |
| Sun 07:00 | 2665 | 3773 | -1108 | 71% |
| Sun 08:00 | 2809 | 3924 | -1115 | 72% |
| Sun 09:00 | 2977 | 4056 | -1079 | 73% |
| Sun 10:00 | 3115 | 4134 | -1019 | 75% |
| Sun 11:00 | 3179 | 4155 | -976 | 77% |
| Sun 12:00 | 3175 | 4126 | -951 | 77% |
| Sun 13:00 | 3100 | 4076 | -976 | 76% |
| Sun 14:00 | 2947 | 4087 | -1140 | 72% |
| Sun 15:00 | 2698 | 4126 | -1428 | 65% |