Installed capacity — Greece
What Greece could produce with everything running at once: installed capacity by source, as reported for 2026, next to how much has actually run.
- Solar 36.1%
- Natural gas 24.6%
- Onshore wind 20.1%
- Hydro reservoir 8.8%
- Lignite 5.5%
- Pumped-storage hydro 2.6%
- Run-of-river hydro 1.1%
- Other sources 0.6%
- Biomass 0.6%
- Geothermal 0.0%
- Oil 0.0%
| Source | Capacity (MW) | Of total | Against 2025 |
|---|---|---|---|
| Solar | 36.1% | +800 | |
| Natural gas | 24.6% | +650 | |
| Onshore wind | 20.1% | +235 | |
| Hydro reservoir | 8.8% | 0 | |
| Lignite | 5.5% | −300 | |
| Pumped-storage hydro | 2.6% | 0 | |
| Run-of-river hydro | 1.1% | +7 | |
| Other sources | 0.6% | +33 | |
| Biomass | 0.6% | +4 | |
| Geothermal | 0.0% | 0 | |
| Oil | 0.0% | 0 |
How much ran at once
The highest output delivered at a single moment over the past twelve months, by source group, next to the installed capacity.
Of 27,169 MW installed, the most that ever ran at one moment was 12,357 MW — 45% of the fleet, on 27/08/2026, 13:30:00.
- Solar 8,624/ 9,800 MW 88%
- Gas 5,409/ 6,680 MW 81%
- Wind 4,000/ 5,460 MW 73%
- Hydro 2,745/ 3,414 MW 80%
- Coal 1,088/ 1,500 MW 73%
- Other 584/ 165 MW 354%
The peak is read from our own generation archive, not estimated: it is a lower bound on what the fleet can do. A small ratio means the group's sources never all ran together — reservoir hydro starts at peak demand, thermal plants sit idle when they are not called. A ratio above one hundred means the declared capacity has fallen behind: the figure is declared at the start of the year while new units come online during it. Groups are compared here rather than individual source types: the same source can report capacity under lignite and generation under coal, and at group level the two meet.
How it changed, year by year
Total installed capacity, from 2015 to 2026.
- 2026 27,169MW +1,429
- 2025 25,740MW +1,618
- 2024 24,122MW +2,125
- 2023 21,997MW +3,177
- 2022 18,820MW +932
- 2021 17,888MW +273
- 2020 17,615MW +484
- 2019 17,131MW −216
- 2018 17,347MW +353
- 2017 16,994MW −151
- 2016 17,145MW −480
- 2015 17,625MW —
The figures come from the ENTSO-E Transparency Platform, installed generation capacity aggregated by production type. The year is the one the transmission operator reports for, not the year the figure was published.
Two things are not here: the number of installations per source, and batteries as a source of their own. The aggregated report does not carry them, and batteries fall under “other”. They appear the day the source publishes them separately.