/solarbytes/media/media_files/2025/06/14/FFIaOBF1gESx6rLcQieU.jpg)
Nearly 27 % of solar generation in April was exposed to zero or negative prices for 75 total hours. Image Credit/Source: Gustavo Fring/Pexels
Poland’s solar PV sector has faced significant grid strain in spring 2025 as rapid capacity growth exceeded system flexibility. According to Pexapark, the solar capture factor dropped to a record low of 0.54, with 27% of April generation exposed to negative pricing for 75 hours. Polskie SieciElektroenergetyczne (PSE), the state transmission operator headquartered in Konstancin-Jeziorna, issued redispatch orders on 25 days in April, curtailing 223GWh of solar output. Between January and April, total curtailment reached 400GWh, with preliminary May data showing 1.7GW curtailed on a single day. In 2024, Poland added 4GW of PV, bringing total installed capacity to over 22GW. However, only 200MW of battery storage was operational by mid-2025. To address this gap, 5GW of de-rated BESS capacity has been awarded through recent T-4 Capacity Market auctions and capital support schemes.