November 20, 2025 2 min. Member News

Greenchoice Integrated receives final approval for realization of two energy storage systems

Greenchoice Integrated has obtained the irrevocable permit for the realization of the electricity storage system (EOS) at the Masterveldweg solar farm in Winterswijk as well as the Bollendonk energy storage system (EOS) at the Bollendonk solar farm in the municipality of Etten-Leur. This brings a more stable, sustainable and cost-efficient electricity system closer for both regions. These systems are expected to be operational by mid-2027.

Solar park and EOS Masterveldweg, Winterswijk, Gelderland

The EOS project at Masterveldweg is Greenchoice Integrated's first fully self-developed co-located - physically placed on a solar farm - storage project. This system, planned on Gelderland's largest contiguous solar farm, enhances local grid stability and helps reduce grid congestion, reducing reliance on fossil generation. Strategically placed for grid connection, it will store excess solar energy generated at Masterveldweg solar farm and release it during peak hours, when demand is highest.

The new EOS will have a planned capacity of 20 MW and a capacity of 80 MWh and will use advanced lithium-ion technology. Martijn van der Pouw, Project Developer at Greenchoice Integrated sees this milestone as an important step in the transformation of solar park Masterveldweg into a full-fledged energy park: “By integrating storage, we optimize the use of renewable energy and contribute to a more resilient, integrated energy system for the region, a key objective of Greenchoice Integrated.”

The electricity storage system is expected to be commissioned in 2027.

Solar park and EOS Bollendonk, Etten-Leur, North Brabant

This solar park is located on a former landfill, which has thus been given a new, valuable purpose. The energy storage system is realized at the solar park and stores excess solar energy during peak production times. The system delivers it back to the grid when demand increases. In doing so, it can help alleviate grid congestion and make electricity supply more affordable. EOS Bollendonk will have an intended capacity of 8 MW and a storage capacity of 32 MWh and will be placed right next to the existing solar farm. This will make optimal use of the existing grid connection.

The system can charge not only from the solar farm, but also from the grid. And that at times of abundant power production and low prices. Ronald de Pender, Storage Project Developer at Greenchoice Integrated sees this irrevocable permit as an important step in further making Etten-Leur and the region more sustainable. “I am very pleased with this new step. With the battery, we are once again adding flexibility to the energy system, and showing that solar power and battery storage can go hand in hand.”

Construction of the energy storage system will begin after the final investment decision, with commissioning scheduled for mid-2027.

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