Browse the atlas
OverWatts AtlasCountriesOwnersInsightsWireChangesSources Live map
Asset classes
- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
- Oil & Gas Field7,055
- Coal / Uranium Mine5,382
- Pipeline4,951
- Cement Plant3,513
- Data Centre3,283
- Iron & Steel Plant1,293
- LNG Terminal1,198
- Grid Storage965
- Iron Ore Mine949
- Chemical Plant868
- Interconnector704
- Export Terminal519
- Refinery279
- Storage / Tank Farm38
- Oil / Commodity Contract19
- Hydrogen Project18
- Carbon Capture (CCS)16
Chokepoints
Grid Storage
Balliemeanoch hydroelectric plant
5th-largest grid storage in United Kingdom of 12 · top 15% worldwide (#143 of 965)
- Owner
- ILI Group
- Status
- construction
- Capacity
- 1,500 MW
- Technology
- pumped storage
- Commissioned
- 2031
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · United Kingdom · 12 ranked
- #1Dinorwig hydroelectric plant2.0 GW
- #3Earba hydroelectric plant1.8 GW
- #4Loch Fearna hydroelectric plant1.8 GW
- #5Balliemeanoch hydroelectric plant1.5 GW
- #6Coire Glas hydroelectric plant1.5 GW
- #7Loch na Cathrach hydroelectric plant450 MW
Co-located infrastructure · within 25 km
- Balliemeanoch hydroelectric plant0 m · Power Plant · 1.5 GW · hydro
- Cruachan hydroelectric plant4.8 km · Power Plant · 440 MW · hydro
- Cruachan hydroelectric plant4.8 km · Grid Storage · 440 MW
- Sloy hydroelectric plant22 km · Power Plant · 153 MW · hydro
On the interactive map
Portfolio
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)