The Czech Republic added 696 MW of solar PV in 2025, down from 967 MW a year earlier, mainly due to a sharp slowdown in residential installations, says Solární Asociace
Residential solar capacity reached 251 MW, but the segment saw 17,391 fewer installations YoY as frequent subsidy changes reduced demand and hurt installers
Growth in the C&I segment partly offset the residential decline; battery storage segment expands
Annual solar PV installations in the Czech Republic, also known as Czechia, totaled 696 MW in 2025, down 271 MW from the 967 MW added a year earlier. Industry body Solární Asociace says the decline was driven mainly by weaker additions in the residential segment.
With 251 MW of newly commissioned capacity last year, installations in the residential solar segment were 17,391 fewer in 2025 compared to the previous year. Frequent changes to the subsidy programs led to this decline, which also financially impacted installers in this space, according to the association.
“Installation companies invested heavily and recruited new employees during the period of massive construction, and now face uncertainty due to the unclear direction of the New Green Savings program,” explained Executive Director of Solární Asociace, Jan Krčmář.
Lack of demand in the residential segment was offset by growth in the commercial and industrial (C&I) segment. The average system size of corporate solar PV plants expanded to 122 kW as companies target decarbonization and reducing their electricity costs.
While this segment also registered a slight decrease on an annual basis, the association believes the availability of interest-free loans from the National Development Bank and support from the Modernization Fund are strong incentives for continued momentum in this segment.
At least 57% of installations in the C&I segment were accompanied by battery energy storage systems (BESS).
Overall, the storage segment expanded by 8% year-over-year (YoY) with the addition of 546 MWh, thanks mainly to the amendment to the country’s Energy Act, or Lex OZE III, earlier this year, which enabled grid connection of standalone storage systems from October 1, 2025.
This segment is in fact on the verge of a boom, notes the association, as it shares that distribution companies have received connection requests for approximately 170 GW with a capacity of around 350 GWh.
However, Director of the AKU-BAT CZ Association and Chairman of the Board of Directors of the Solární Asociace, Jan Fousek, cautions that a majority of these projects may not be implemented since several such applications are submitted by newly established companies with no field experience.
The association reiterates that slow permitting processes remain ongoing challenges for the Czech solar market, especially hampering the growth of large solar parks with capacities over 1 MW.