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Factcheck: How nuclear, gas, wind and solar power are affected during heatwaves
Matched: climate
Extreme heat affects all major power sources. Nuclear and gas plants need cool water for operations and may reduce output or shut down when water temperatures rise. Solar panels become less efficient in high heat. Wind power can drop if heatwaves bring calm conditions. Meanwhile, electricity demand spikes as people use air conditioning, straining grids precisely when generation capacity may be reduced.
Analysis: Wind and solar power overtake fossil fuels in Germany for first time ever
Wind and solar generated more of Germany's electricity than fossil fuels for the first time in 2025. The milestone reflects years of renewable energy expansion in the country. Germany has been accelerating its clean energy transition following the energy crisis triggered by Russia's invasion of Ukraine, which pushed it to reduce dependence on Russian gas.