News
Tractebel supports ENGIE in third large-scale Battery Energy Storage System in Belgium
ENGIE to begin construction of a new 80 MW/320 MWh battery park at its site in Drogenbos, near Brussels, Belgium, in March 2026. Tractebel is providing technical assistance.
Following earlier projects in Vilvoorde and Kallo, which Tractebel also supported, Drogenbos is client ENGIE’s third large-scale Battery Energy Storage System (BESS) project in Belgium, marking another significant step forward in the country’s energy transition.
Tractebel supports third ENGIE BESS project in Belgium
With our proven track record in BESS in Belgium and with ENGIE, our energy and infrastructure experts have supported Engie in the basic design, pre-procurement and Capacity Remuneration Mechanism (CRM) bid preparation phases in 2025. Together with ENGIE as one integrated team, our support will continue in 2026 through the construction and commissioning phases. Our role will include technical expertise and design review, health and safety assistance, and civil site supervision. Construction is scheduled to start in March 2026 and is expected to be completed by September 2027.
Belgium’s Drogenbos battery park will supply enough power for the average daily electricity consumption of 38,400 households
Safeguarding Belgium’s energy independence
On October 30, 2025, high-voltage grid operator Elia announced that ENGIE’s Drogenbos project has been selected in the fifth CRM auction, securing a 15-year capacity contract starting in November 2027. The CRM was introduced by the federal government to safeguard Belgium’s electricity supply during the coming winters.
The new 80 MW/320 MWh project will comprise 88 battery modules that can supply power for up to four hours — equivalent to 64,000 home batteries of 5 kWh each, or the average daily electricity consumption of 38,400 households.
The Drogenbos battery park will be ENGIE’s third large-scale battery energy storage system in Belgium, after Vilvoorde (200 MW/800 MWh) and Kallo (100 MW/400 MWh). Together, these projects will represent a total installed capacity of 380 MW and a total storage capacity of 1.5 GWh. They will deliver an essential contribution to grid stability and maximize renewable energy integration into the Belgian electricity system.
We are proud to partner with ENGIE for the third time on a large-scale BESS project in Belgium. The storage provided by these projects is key to securing the country’s energy supply and independence for years to come. As our experience and expertise in BESS continues to grow, we look forward to delivering more projects that will contribute to the energy transition and to meeting Europe’s decarbonization goals.
Bernard Marié
Head of Flex Power, Renewable, Industry & SMR - Gas, Energy and Nuclear, Tractebel
With this new battery park, we are strengthening our current position as the Belgian reference in flexible energy generation and storage. It is no coincidence that flexibility is one of the three cornerstones of ENGIE’s strategy in Belgium, alongside renewable energy and smart customer solutions. The flexible storage capacity of batteries will play a key role in tomorrow's energy system: by balancing supply and demand, they support the electricity grid and help us make optimal use of the available renewable energy.
Vincent Verbeke
CEO of ENGIE Belgium