Largest storage IPPs (BESS)
Battery storage (BESS) capacity. Pumped storage is tracked separately and not aggregated here. Where a company discloses MWh, the figure is shown in the unit reported.
| # | Company | HQ | Storage | Basis | As of | Confidence |
|---|---|---|---|---|---|---|
| 1 | Grenergy ipp · developer | Spain | 21.7 GWh | Port | 2025-12-31 | Medium confidence |
| 2 | Enel Green Power ipp · developer · asset_owner | Italy | 3.44 GW | Op | 2025-12-31 | Medium confidence |