Europe''s giant batteries: the four biggest planned/under
As of mid–late 2025, four utility-scale Battery Energy Storage System (BESS) projects stand out by size — each designed in the 0.5–2.8 GWh class and backed by reputable developers
While these projects boast massive planned capacities, the largest active BESS in Europe is now the first 400 MWh phase of ENGIE's 200 MW / 800 MWh system in Vilvoorde, Belgium, which has officially gone live. Sungrow and ENGIE bring Europe's largest battery energy storage system online in Belgium with the completion of its first 400 MWh phase.
Once completed, the four-hour battery energy storage project will operate under a 15-year contract with Elia, Belgium's electricity grid operator, and be located next to Engie's gas power plant in Vilvoorde. From pv magazine ESS News site
As of mid–late 2025, four utility-scale Battery Energy Storage System (BESS) projects stand out by size — each designed in the 0.5–2.8 GWh class and backed by reputable developers and public filings. Below I summarise each project, its capacity, status and why it matters. 1. Green Turtle (Rotem/Dilsen-Stokkem, Limburg — Belgium)
A digital illustration of the D-STOR battery storage project in Belgium. Image: BSTOR. Project owners BSTOR and Energy Solutions Group have started building separate BESS projects totalling 440MWh of capacity in Belgium, following financial close, both of which will use Tesla Megapacks.
As of mid–late 2025, four utility-scale Battery Energy Storage System (BESS) projects stand out by size — each designed in the 0.5–2.8 GWh class and backed by reputable developers
Green Turtle, situated on the Rotem industrial site in Belgium''s northwestern Limburg province, was originally planned as a 600 MW battery storage park for renewable energy. For
Utility-scale energy storage systems provider NHOA Energy, together with ENGIE, has commenced construction on a 400 megawatt-hour (MWh) battery energy storage system (BESS) in
The Vilvoorde Battery Park, one of the largest BESS-projects in Europe to date, demonstrates how global expertise and local execution can deliver pioneering infrastructure for a renewable-powered
A digital illustration of the D-STOR battery storage project in Belgium. Image: BSTOR. Project owners BSTOR and Energy Solutions Group have started building separate BESS projects
NHOA Energy, which developed this project in Taiwan, will deliver the 100 MW/400 MWh system. | Image: NHOA Energy French state-backed utility Engie has broken ground on the second
Once completed, the four-hour battery energy storage project will operate under a 15-year contract with Elia, Belgium''s electricity grid operator, and be located next to Engie''s gas power
Kallo, 14 May 2025 – NHOA Energy, the global provider of utility-scale energy storage systems, today celebrated with ENGIE the
This energy storage system is tailored for biogas power generation, forming a closed-loop renewable energy system. Adopting the CNTE STAR-T solution, it ensures stable storage and
Kallo, 14 May 2025 – NHOA Energy, the global provider of utility-scale energy storage systems, today celebrated with ENGIE the groundbreaking of a 400 MWh battery energy storage system (BESS) in
NHOA Energy, formerly part of the ENGIE group before becoming a subsidiary of TCC Group, has positioned itself as a top-tier global player in utility-scale battery storage.
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