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Europe's Solar Output Drops 20% Amid Extreme Heatwaves

4/19/2026

24 5 Full Breakdown

Summary

Story summary

Extreme heatwaves in Europe reduce solar panel output by nearly 20% when surface temperatures exceed 40°C.
In 2025, climate change raised average summer temperatures by 3.6°C.
The war on Iran has spurred renewed renewable energy investments as Europe seeks alternatives to fossil fuels.
Outdated energy grids threaten more than 120 gigawatts of planned green projects, requiring about €85 billion in annual investments to modernize.

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Story summary

Extreme heatwaves in Europe reduce solar panel output by nearly 20% when surface temperatures exceed 40°C.
In 2025, climate change raised average summer temperatures by 3.6°C.
The war on Iran has spurred renewed renewable energy investments as Europe seeks alternatives to fossil fuels.
Outdated energy grids threaten more than 120 gigawatts of planned green projects, requiring about €85 billion in annual investments to modernize.