RWE’s first Dutch BESS online, commissioning ongoing for grid-forming second

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Independent power producer (IPP) RWE has commissioned a 35MW/41MWh BESS in the Netherlands, while commissioning is progressing on a second that will have grid-forming capabilities.

The 1.17-hour battery energy storage system (BESS) in Eemshaven is the company’s first in the Netherlands and will balance supply and demand on the Dutch grid, RWE said. It is comprised of BESS units from CATL comprising a total of 110 lithium iron phosphate (LFP) battery racks, and construction started a little over a year ago.

The firm also said that commissioning is ongoing for its second project in the Netherlands, a 7.5MW/11MWh system with ultra-fast synthetic inertia capabilities, a type of grid-forming application. RWE said it would be one of the first of its kind installed on mainland Europe. A 200MW/400MWh grid-forming BESS was commissioned by Zenobe in Scotland earlier this month.

The two BESS projects are part of a wider system integration project for the 795MW OranjeWind offshore wind project by RWE in partnership with the IPP arm of oil and gas major TotalEnergies. The OranjeWind project is establishing new ways to integrate renewables into the Dutch energy system, including with electrolysers, smart charging stations for electric vehicles (EVs), electric boilers, and BESS.

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The energy storage market in the Netherlands has progressed substantially in the past 18 months. At the start of 2024, grid fees were made more flexible, significantly improving the potential business case for storage.

Following that, a swathe of large-scale projects were financed or progressed, and, most recently, last month Lion Storage reached financial close on a 350MW/1,400MWh BESS, one of the largest in Europe to do so. A few weeks before that, the first 4-hour system, at 10MW/40MWh, came online.

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.
2 December 2026
Italy
Battery Asset Management Summit Europe is the annual meeting for owners, operators, investors, and optimisation specialists working with operational BESS assets across the continent. The Summit focuses on how to maximise performance and revenue, manage degradation, integrate advanced optimisation software, navigate evolving market and regulatory frameworks, and plan for repowering or end-of-life strategies. With insights from Europe’s most active storage markets, it equips attendees with practical guidance to run resilient, profitable battery portfolios as the sector scales.

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