Building Europe’s independent energy future.

Return develops and operates battery storage assets across Europe, with strong hubs in the Netherlands, Belgium, Germany, and Spain. We’re continuously expanding into strategic locations to keep up with the growing demand for energy flexibility.

Return Antares

Our next large-scale energy storage project.

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.
100 MW / 200 MWh
Waddinxveen, NL
Under Construction
COA / Fixed Tolling

Return Castor & Pollux

Our key battery storage projects.

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.
60 MW / 120 MWh
Vlissingen, NL
Operational
COA / Fixed Tolling

Return Mufasa

Our large-scale energy storage solution.

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.
364 MW / 1457 MWh
Vlissingen, NL
Under Construction
Market Revenue Index

Return White Horse

Our landmark project in Germany.

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.
12 MW / 25 MWh
Brietlingen, DE
Contracting
Merchant

Return Star

Our first large-scale energy storage project.

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.
10 MW / 10 MWh
Terneuzen, NL
Operational
COA / Fixed Tolling