Renewable energy expansion in Brandenburg showed mixed results in 2025, with wind energy maintaining strong momentum while solar deployment slowed significantly, according to a report from LEE Berlin Brandenburg (Landesverband Erneuerbare Energien Berlin Brandenburg). Wind power remains central to meeting the state’s 2030 targets, provided grid expansion and regulatory stability keep pace.
In 2025, new wind turbines with a combined capacity of 622 MW were commissioned in Brandenburg, almost double the level recorded in 2024. In addition, permits were granted for a further 1,500 MW of wind capacity. This represents a record level of approvals and places the sector broadly on track for the 2030 expansion targets.
However, not all approved projects are expected to reach commissioning. Upcoming federal auctions are likely to remain heavily oversubscribed, increasing competition and putting downward pressure on awarded prices. At the same time, investment costs have risen since 2020 due to higher raw material prices, logistics expenses and financing costs.
Regional planning and grid development remain critical factors. In some parts of Brandenburg, legally binding regional plans are still lacking, while grid expansion and reinforcement are progressing slowly. Aligning grid development with designated wind priority areas is considered essential to maintain current deployment levels.
While solar capacity additions fell sharply in 2025, wind energy continues to provide the main growth driver in Brandenburg’s renewable electricity sector. Maintaining political continuity, ensuring efficient permitting frameworks and accelerating grid modernisation will be decisive for securing further wind deployment.
Battery storage is expanding across Berlin and Brandenburg, improving system flexibility and supporting integration of variable renewable generation. Decentralised storage capacity contributes to grid resilience and supply security, particularly as wind penetration increases.
Biomass and geothermal energy also contribute to regional energy supply, but wind energy remains the largest scalable source for meeting medium-term renewable targets. Grid capacity and connection procedures are identified as key enabling conditions for continued wind growth.
