StoryCommercial
Greenvolt picks BYD Haohan for Poland's largest battery, a 600 MW / 2.4 GWh plant at Siedlce
BYDHaohan / MC Cube grid storage
Greenvolt Power signed a supply deal with BYD Energy Storage for Haohan systems at Siedlce, a 600 MW / 2.4 GWh plant that will be Poland's largest battery and one of Europe's largest. Construction starts in the third quarter of 2026, with commercial operation targeted for the end of 2027; the plant already has revenue from Poland's capacity market.
- Builds on 2025 deals for two 200 MW / 800 MWh Polish sites (1.6 GWh combined).
- Revenue secured through Poland's capacity market.
- Commercial operation targeted for end-2027.