Czech solar power plants break records, generating more than 700 GWh of electricity in May
Solar power plants in the Czech Republic have recorded their strongest month in history so far. According to data published on Energostat, they supplied 701 GWh of electricity to the grid in May, surpassing the previous record set in June 2025 by nearly 50 GWh. Total electricity generation in the Czech Republic rose year on year by just under 200 GWh in May, while consumption was virtually unchanged.
Electricity consumption in the Czech Republic reached 4.86 TWh in May, remaining virtually unchanged year on year. Compared with the cooler-than-average April, which brought a 4.3 % year-on-year increase in electricity consumption, it fell by around 300 GWh.
Electricity generation rose despite stagnant consumption, increasing by 3.4 % year on year to 5.62 TWh. Nuclear power plants were traditionally the largest source of electricity, accounting for almost 50% of total generation with 2.6 TWh. Lignite-fired power plants supplied 1.4 TWh of electricity to the grid in May, around 140 GWh more year on year.
For the third consecutive month, solar power plants were the third-largest source, while also setting a historic record by supplying more than 700 GWh of electricity to the grid for the first time. Their generation rose by 15 % compared with April and by as much as 19 % compared with May 2025.
Rising solar generation in the Czech Republic had a particularly negative impact on its average capture price on the day-ahead market during the first week of May. For a relatively long time, it even remained in negative territory. However, its value gradually rose in subsequent weeks, ending May at 41 EUR/MWh. This is more than double the level recorded in April this year and represents a 45 % increase compared with May 2025.
The increase in the average capture price for Czech solar power plants was supported by rising spot electricity prices in the Czech Republic. The average price on the Czech day-ahead market was nearly 98 EUR/MWh in May, around 16 EUR/MWh higher than in April and nearly 25 EUR/MWh higher than in May last year. The maximum price reached was 407.3 EUR/MWh, while the minimum was -500 EUR/MWh.
