Poland's Drought Forces Coal Plants to Close, Solar Surges

Poland just learned an expensive lesson about building an energy system that depends on rivers staying full.

Earlier this week, energy giant Enea had to slash output at two major coal plants when the Vistula River dropped to critically low levels. The plants need huge amounts of river water to cool down, and there simply wasn't enough. The shutdown cut 1.3 gigawatts from Poland's grid, enough to power more than a million homes.

The Vistula's flow near the Kozienice Power Plant plummeted to just 135 cubic meters per second on August 5. That plant alone needs to withdraw up to 100 cubic meters every second for cooling. During the drought, the plant was trying to use more than half of what remained in the river.

The Bright Side

Here's where the story takes a hopeful turn. While coal plants sat idle and hydropower dropped across Europe, solar energy stepped up in a big way.

The same hot, dry weather that crippled thermal power plants created perfect conditions for solar panels. Solar generation across the EU jumped more than 20 percent in 2025, producing more power than ever before. Even when wind and hydro fell short, solar filled the gap.

Poland itself has been quietly building solar capacity at lightning speed. The country added over 20 gigawatts of solar between 2020 and 2025, one of the fastest buildouts in Europe.

Environmental experts say the drought reveals something climate scientists have been warning about for years. Power plants that contribute to climate change are becoming victims of the very problem they create. As droughts intensify and rivers dry up, thermal plants that need constant water for cooling become unreliable.

Solar and wind power need almost no water to generate electricity. They keep producing even when rivers run dry and temperatures soar. That resilience matters more with each passing summer.

Poland still gets 51 percent of its electricity from coal, well above the EU average. The country aims to reach 51 percent renewable electricity by 2030, but old habits die hard.

The drought delivered an unexpected message: the technology Poland needs for a stable energy future is already working, growing fast, and doesn't care how low the river gets.