Moerdijk: 208 containers, 400 MW, 1,100 MWh

RWE (ISIN DE0007037129) took a final investment decision on 21 September 2026 to build a large-scale battery storage system at its existing Moerdijk power plant site in the Netherlands. The facility will consist of 208 lithium-ion battery containers with 400 MW of power output and 1,100 MWh of capacity — roughly 2.75 hours of discharge at full output — and is scheduled to enter operation in the second quarter of 2028.

RWE intends to use the asset to relieve regional grid congestion in the Dutch province of Noord-Brabant, where industrial demand and renewable generation have been competing for limited network capacity. Siting the battery at an existing power plant site allows the developer to reuse grid connections and land, a pattern increasingly common in EU storage projects.

Hambach adds 236 MW in Germany

The Moerdijk decision follows RWE's announcement at the end of July 2026 of another large-scale battery project at the former Hambach lignite site in Germany, planned for 2027 with 236 MW of power and 470 MWh of capacity. Together, the Hambach and Moerdijk projects represent 636 MW of power and 1,570 MWh of storage capacity — a portfolio that straddles two EU member states and two distinct use cases: congestion relief in a congested Dutch industrial province and the conversion of a German lignite legacy site.

Why utilities are moving now

The two projects sit within a broader European acceleration. According to ENTSO-E's Summer Outlook 2026, installed battery storage capacity in Europe roughly doubled year on year to around 29 GW by summer 2026, while 126 GW of additional renewable generation capacity was added over the same period, predominantly photovoltaics. ENTSO-E notes that batteries can absorb short-term surpluses, release energy later and provide balancing energy and other system services, but do not replace grids or additional generation capacity.

That framing matters for developers: storage economics depend heavily on procurement conditions and on stacking multiple revenue streams, from wholesale arbitrage to ancillary services. Utility-scale projects anchored on existing grid connections, like Moerdijk and Hambach, are among the most bankable formats in the current market because they reduce interconnection risk and construction timelines.

Source: wallstreet-online.de / ENTSO-E Summer Outlook 2026

This article was assisted by AI analysis. Please refer to the original source for official information.