Largest BESS in Belgium, EStor-Lux, officially inaugurated

LinkedIn
Twitter
Reddit
Facebook
Email

EStor-Lux, Belgium’s battery energy storage system (BESS) at 10MW/20MWh, was officially inaugurated on Tuesday (26 April).

The inauguration ceremony for the BESS was attended by around 100 Belgian energy sector stakeholders including Tinne Van der Straeten, Federal Minister of Energy.

The 480-module lithium-ion BESS, which is in Bastogne in the Wallonia region, has been participating in grid frequency auctions issued by grid operator Elia since December 2021 as reported by Energy-storage.news. It uses system integrator’s Fluence‘s Gridstack products.

This has mainly been in automatic Frequency Restoration Reserve (aFRR), a recently-launched soon-to-be pan-European grid service. Since its launch, the BESS has provided over 30GWh of balancing capacity. Centrica Business Solutions is in charge of the optimisation.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Clean Horizon’s head of market analysis Corentin Baschet told Energy-storage.news in February that BESS projects could capture one-third of the aFFR market in the coming years.

The project was launched by a consortium comprising investment groups SRIW, Ackermans & van Haaren, BEWATT, SOCOFE and SOFILUX, engineering and construction firm CFE and Belgian government development organisation IDELUX. The project was not subsidised, the companies said, with up to 50% of financing provided by a non-recourse bank loan.

Other attendees at the inauguration included Willy Borsus, Vice-President and Walloon Minister of Economy, Philippe Henry, Vice-President and Walloon Minister of Climate and Energy, and Benoît Lutgen, Mayor of Bastogne.

The EStor-Lux consortium chairman Bruno Vanderschueren cited four reasons for the project’s success. These were the increased developed of renewable energies and resulting need for flexible resources, the evolution of BESS technology, favourable federal and regional regulatory frameworks and the quality of the consortium’s partners.

3 November 2026
Málaga, Spain
Understanding technology and supplier selection for Europe’s utility-scale PV market in 2027. PV ModuleTech Europe 2026 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of PV module, inverter and battery supplier selection; product availability, technology offerings, supply chain traceability, quality assurance, factory auditing, system reliability, and supplier bankability.

Read Next

October 20, 2026
Oyster Renewable COO talks about India’s BESS growth, domestic manufacturing ambitions, supply chain resilience and challenges.
Premium
October 19, 2026
In the wide-ranging conversation, Shaw starts off by describing the year-end rush as a perennial challenge for the battery energy storage system (BESS) sector in the US.
October 19, 2026
Four-hour battery storage is less expensive than open-cycle gas turbines in the 43 markets in which both technologies were modelled, according to a new report from market research firm Wood Mackenzie.
October 19, 2026
Energy storage is becoming an indispensable new-type power system infrastructure, CATL CEO and chairman Robin Zeng said in an industry speech last week.
October 19, 2026
New Zealand energy storage company ArcActive has switched on a pilot lead-acid BESS in Victoria, Australia, with support from Origin Energy.