EDF's Luminus Opens the 150 MW / 600 MWh Navagne Battery in Wallonia

Luminus, the Belgian arm of EDF, and the infrastructure investor I4B have opened a 150 MW / 600 MWh battery at Lixhe in Wallonia. EDF calls it the largest battery in the region, and puts the investment at €160 million.

The project

Energy-Storage.News reports that EDF announced the inauguration on 1 September. The battery is a four-hour system: 150 MW of power and 600 MWh of storage. It connects directly to the high-voltage grid of the Belgian transmission operator Elia, and sits next to the existing Lixhe hydroelectric plant, which lets it use existing grid infrastructure and avoid interconnection delays.

Luminus and I4B reached financial close in June 2025. Luminus's subsidiary Newelec built the 33 kV medium-voltage network. ESS News adds that the equipment supplier was not officially announced, and that Sungrow with 132 storage containers was reported. We could not confirm that, so treat it as unverified.

Why four hours

ESS News links the four-hour design to a wider shift in the Benelux region, from short frequency-response batteries towards longer systems that move energy across the day. A battery with more hours can charge when solar output is high and prices are low, and discharge in the evening. Belgium's Energy Minister Mathieu Bihet publicly praised the project as a boost to grid flexibility and renewable integration.

Another Belgian project starts

In the same period, Engie announced that construction has started on a 74 MW / 296 MWh battery at Coo in Liège province, with commissioning scheduled for early 2028, per Energy-Storage.News. It will sit at a site that already has pumped storage, solar and electric vehicle charging.

What it means for home batteries

Belgian households face their own choices on home storage, which our Belgium country guide covers, including grid fees that depend on region. Large batteries like Navagne make the grid better at absorbing solar, but they do not change what a home battery earns. We could not find a published estimate linking projects of this size to household bills, so we do not claim one. For a comparable story, see how Bulgaria's storage fleet passed 5 GW.

Sources

• Energy-Storage.News: Belgium, EDF inaugurates 600MWh BESS, Engie starts building 296MWh project
• ESS News: EDF brings €160 million, 600 MWh Navagne BESS online in Belgium

Related guides

Keep reading, or check your own numbers:

• Home batteries in Belgium
• Bulgaria's battery storage passes 5 GW
• Estonia activates the 100 MW Hertz 2 battery