daily · Clean Energy
Swisspower opens 14.5 MWp Prösen solar park sharing a grid connection with its Elsterwerda wind farm
Swisspower Renewables opened the 14.5 MWp Prösen solar park in Wainsdorf, in Brandenburg's Röderland municipality, on October 15, the Swiss renewable energy group announced. The ground-mounted plant shares a single grid connection point at the Gröditz substation with the company's existing Elsterwerda wind farm, forming an energy park that combines wind and solar generation with prospective battery storage at one grid interconnection.
By Greener Numbers Editorial Team · Published October 17, 2026 · Updated 10/17/2026
Swisspower Renewables opened the 14.5 MWp Prösen solar park in Wainsdorf, in Brandenburg's Röderland municipality, on October 15, the Swiss renewable energy group announced. The ground-mounted plant shares a single grid connection point at the Gröditz substation with the company's existing Elsterwerda wind farm, forming an energy park that combines wind and solar generation with prospective battery storage at one grid interconnection.
The solar park generates about 14,900 MWh of renewable electricity a year, enough in calculated terms to supply roughly 4,200 households and avoid about 5,400 tonnes of CO2 annually, the company said. Sharing the Gröditz grid connection lets the site use existing network capacity more efficiently and economically integrate further projects at the location; a planned Prösen-Nord expansion and a battery storage system are set to extend the concept in coming years.
"Battery storage will play a key role in integrating renewable energies into the market. It makes solar power available even when the sun is not shining. That is why we want to realize storage solutions both in this energy park and in future solar projects," said Lars Hieke, CEO of Swisspower Renewables AG, at the opening ceremony.
The Röderland municipality also benefits directly: under Brandenburg's special levy law (BbgEESG), Swisspower Renewables pays a municipal levy of 2,000 euros per installed megawatt, borne entirely by the company. At the opening, the company also made donations to the Wainsdorf volunteer fire department and a Röderland schools association.
The project is the latest in Swisspower Renewables' build-out in southern Brandenburg. The company's project listings describe the Prösen site as roughly 23,000 solar modules with 14.5 MW of capacity commissioned in 2026.
Limits: household-supply and CO2 figures are the developer's calculated estimates, not measured output, and the battery storage and Prösen-Nord expansion are plans without announced dates or capacities. This brief is based on the company's announcement and project documentation.
Official source: windkraft-journal.de ↗