ENGIE Coo
Being built, 74 MW · 296 MWh, in Stoumont, owned by ENGIE (Electrabel). Every fact below is as a published source states it, with the address beside it; a field not shown is one no source gave, and nothing is guessed.
The battery
| Power | 74 MW |
| Capacity | 296 MWh |
| Duration | 4.0 hours |
| Status | Being built, as of 19 October 2026 |
| Owner’s date | 2028, expected in early 2028 |
| Municipality | Stoumont, Coo, Liège |
| Placed on the map | at the centre of Stoumont, its municipality (GeoNames) |
Who is behind it
| Owner | ENGIE (Electrabel) |
Not published anywhere we have found: ultimate owner, developer, traded by, built by. The page says so rather than guessing.
Not in Elia’s list
Elia does not schedule this battery, because it is not yet running.
What the sources say
Beside ENGIE’s Coo pumped storage station; construction began on 3 August 2026. The municipality is our reading of where the Coo station is; the sources say only Coo.
Evidence and sources
From the owners’, developers’ and builders’ own releases and the trade press, read by Vitreous, joined to Elia’s list by name. This page carries no money: no Belgian body publishes what a named battery earns. List id BE-B26.