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Estonia · asset class
Grid Storages in Estonia
Estonia has 2 grid storages mapped on the OverWatts open energy atlas — the 37th-largest fleet of the 58 countries that hold any, and 0.2% of the world's mapped total. Of these, 2 under construction or proposed. The largest is Zero Terrain hydroelectric plant (550 MW).
The largest owner-operators are Alexela Group (1), Eesti Energia AS (1) and Sunly Innovation (1) — Alexela Group alone is named on 50% of them. 2 are in the pipeline, led by Zero Terrain hydroelectric plant (550 MW), under construction. They account for 5% of every energy asset OverWatts maps in Estonia.
2
Grid Storage in Estonia
#37
of 58 countries
2
In construction / proposed
On the interactive map
Largest grid storages in Estonia
- Zero Terrain hydroelectric plant550 MW · 2029 · construction
- Ida-Virumaa hydroelectric plant225 MW · 2026 · construction
Who owns Estonia's grid storages
- Alexela Group1 50%
- Eesti Energia AS1 50%
- Sunly Innovation1 50%
Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.
Under construction & proposed
- Zero Terrain hydroelectric plant550 MW · 2029 · construction
- Ida-Virumaa hydroelectric plant225 MW · 2026 · construction
How Estonia compares · grid storages by country
Frequently asked
- How many grid storages are there in Estonia?
- OverWatts maps 2 grid storages in Estonia — 0.2% of the world's mapped total, the 37th-largest national fleet of the 58 countries with any.
- What is the largest grid storage in Estonia?
- Zero Terrain hydroelectric plant, at 550 MW.
- Who owns the grid storages in Estonia?
- Alexela Group is named as owner or operator on the most — 1 of 2 (50%). Next are Eesti Energia AS (1) and Sunly Innovation (1).
- What new grid storages are being built in Estonia?
- 2 projects are under construction or proposed. The largest are Zero Terrain hydroelectric plant (550 MW) and Ida-Virumaa hydroelectric plant (225 MW).