Modular ESS container project financing options in Belgium 2026

Is ESG financing a battery energy storage system in Belgium?

Energy Solutions Group (ESG) announced today that it has completed project financing for a 75-MW/300-MWh battery energy storage system (BESS) under construction in Belgium. The Megapack battery system. Source: Tesla Inc The financing was arranged by KBC Bank and Wallonie Entreprendre.

What is ESG's Bess project?

It is located on an industrial site next to an ELIA high-voltage substation, a key site for integrating renewable energy into the Belgian grid. This project marks ESG's second and largest BESS (Battery Energy Storage System) in its portfolio, reinforcing its commitment to energy transition efforts in Belgium.

What is ESG's Bess (battery energy storage system) project?

This project marks ESG's second and largest BESS (Battery Energy Storage System) in its portfolio, reinforcing its commitment to energy transition efforts in Belgium. Frederik Jansen, ESG’s CTO, emphasized the collaborative efforts of partners Spie, Yuso, Sweco, House of Projects, and Tesla in delivering this pioneering project.

How many MW of Bess was contracted in 2025-2026?

Elia announced that the goal had been achieved for the 2025-2026 delivery year: “security of supply is guaranteed, and sufficient volume has been contracted”. A total of 100 MW of BESS was contracted in this procurement exercise.

Who financed the Bess project?

The financing was arranged by KBC Bank and Wallonie Entreprendre. The latter announced separately that its own contribution stands at EUR 15 million (USD 15.4m). The BESS facility is being built on an industrial site next to an Elia high-voltage substation in Harmignies, part of the municipality of Mons in the Walloon region.