50MWh battery completed in Germany, claims ‘Europe’s largest’ crown

LinkedIn
Twitter
Reddit
Facebook
Email
NEC ES built the project for EnspireME, a joint venture (JV) between Eneco and Mitsubishi Corporation. Image: NEC ES.

Jardelund, Germany, is now host to what is currently Europe’s largest battery energy storage system, a 50MWh project completed and announced just a few days ago by NEC Energy Solutions.

The customer, EnspireME, is a joint venture (JV) involving Dutch renewables company Eneco and Japan’s industrial conglomerate Mitsubishi Corporation. Power stored in the batteries can either be sold in Germany’s weekly primary reserve control markets to grid operators who would then use it to provide the balancing power, or the system’s operators and owners could directly use it to provide primary control reserve, where it can be used in direct competition with coal and gas.

While original plans for the installation involved surplus wind energy being stored in the batteries, the latest update from NEC ES said only that Eneco and Mitsubishi are set to investigate connecting the Jardelund battery system to the output of local windfarms. Electricity would be stored in periods of curtailment, where wind energy is ‘throttled down’ from entering the grid due to temporary oversupply.

The whole 48MW / 50MWh project apparently took NEC ES around eight months to complete, according to Eneco director for Generation and Storage, Hugo Buis, who said he was “very impressed” with the integrator’s efforts. Energy-Storage.news first reported on the project in April last year.

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

“This investment in energy storage will generate revenue for Eneco and Mitsubishi Corporation in the primary reserve market and also demonstrate the economic benefits of pairing energy storage with renewables, first proven with solar and now with the abundant wind generators in the Jardelund region,” NEC ES CEO Steve Fludder said.

NEC ES provided full EPC (engineering, procurement and construction) services including delivery of its adaptable Grid Storage Solution (GSS) and energy storage system controls software, AEROS. The installation uses around 10,000 lithium-ion battery modules.

The news comes shortly after NEC ES was announced as supplier to a 20MW battery storage project in the UK for Danish company Ørsted.

Earlier this year, in an interview with NEC ES’ Steve Fludder, the CEO said that in his estimation, a successful future for the energy industry would be centred around the creation of ‘enterprise platforms’ enabling asset owners and system owners to capture value across the whole marketplace.

Also in the past few days, Belectric has completed three front-of-meter battery energy storage systems utilising automotive batteries and brought them online, including an “approximately 14MW” project in Germany at the site of a car manufacturing plant which provides frequency balancing services to the grid and another in the country which is about 7MW.

The latter improves the operational efficiency of existing power station facilities while again providing frequency response. According to Belectric these and one other large-scale system just completed and energised in the UK bring the company to over 100MW of battery storage projects realised. Belectric is also responsible for operations and maintenance (O&M) for this 100MW portfolio.

15 September 2026
Berlin, Germany
Launching September 2026 in Berlin, Energy Storage Summit Germany is a new standalone event dedicated to Germany’s energy storage market. Bringing together investors, developers, policymakers, TSOs, manufacturers and optimisation specialists, the Summit explores the regulatory shifts, revenue models, financing strategies and technology innovations shaping large-scale deployment. With Germany targeting 80% renewables by 2030, it offers a focused platform to connect with the decision-makers driving the Energiewende and the future of utility-scale storage.

Read Next

Premium
July 3, 2026
Energy-Storage.news Premium speaks with energy storage market experts Raafe Khan of Camelot Energy Group and Oliver Kerr of Aurora Energy Research on FERC’s recently issued show cause orders.
July 3, 2026
AGL has delivered a solar and battery microgrid described as “one of the largest privately owned non-mining microgrids in Australia”.
July 1, 2026
Three massive BESS projects have been launched in Europe: BW ESS has broken ground on a 1GW/5.7GWh system in Germany, while Greenvolt and Giga Storage have enlisted suppliers (BYD and Tesla) for 2.4GWh and 2.8GWh projects in Poland and Belgium.
June 30, 2026
EnBW and VPI have launched construction on large-scale BESS projects in Germany, while Elements Green and Eku Energy have agreed supply and acquisition deals respectively for separate 400MW/1,600MWh projects.
June 26, 2026
Energy Dome has signed its second low-carbon energy supply contract with Google.