Building Europe’s independent energy future.

Antares is designed to enhance grid stability and support the integration of renewable energy in the Netherlands. As part of Return’s growing portfolio, Antares will play a key role in enabling a more flexible and resilient energy system.

Located in Vlissingen, Pollux and Castor are key battery storage projects that have been developed. Operational since December 2023, Pollux is the Netherlands’ largest battery storage system, helping to stabilize the electricity grid and support Essent’s renewable energy portfolio. Together, these projects play a vital role in balancing energy supply and demand, strengthening the Dutch power market.

After acquiring Lion Storage in 2023, Return strengthened its position as a leader in large-scale energy storage solutions. Located in Vlissingen’s North Sea Port, Project Mufasa is now fully funded and set to become one of Europe’s largest battery storage systems. By optimizing renewable energy through advanced trading, it will play a crucial role in stabilizing the Dutch power grid and accelerating the energy transition.

Following Return’s investment in J&P Batterieprojekte in 2024, White Horse will be the first operational battery storage project under the J&P brand, operating as part of Return. This landmark project in Germany supports the country’s renewable energy transition by enhancing grid stability and balancing energy supply and demand. With White Horse, Return strengthens its position in the German market, furthering its commitment to expanding large-scale energy storage across Europe.

Star in Terneuzen is operational since November 2021. By balancing supply and demand, it enhances grid stability, enables renewable energy integration, and strengthens the region’s sustainable energy infrastructure.

Following Return's investment in Hamster Zunne in 2024, Sirius was successfully developed to be Return's first battery storage project at the extra high voltage level of 220 kV. This landmark project in the Meeden area supports the country's renewable energy transition by enhancing grid stability and balancing energy supply and demand. With Sirius, Return strengthens its position in the Dutch market, furthering its commitment to expanding large-scale energy storage across Europe.

Return has successfully developed Spica to expand the flexible BESS battery storage capacity at the extra high voltage level of 220 kV in the Meeden area. This landmark project supports the country's renewable energy transition by enhancing grid stability and balancing energy supply and demand. With Spica, Return strengthens its position in the Dutch market, furthering its commitment to expanding large-scale energy storage across Europe.