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ISSN 2753-7757 (Online)

Balancing the boom: how European grids are adapting to abundant solar power

16/6/2026

8 min read

Feature

Man in high viz jacket and hard hat, standing on scaffold at height next to a solar panel, and smiling to camera, with two people standing at ground level, talking Photo: Adobe Stock/Paul Bradbury/KOTO
Record solar deployment is creating new demands for storage, flexibility and electricity networks across Europe

Europe’s solar expansion has exceeded expectations, helping to reduce emissions and strengthen energy security. But as rooftop and utility-scale generation continue to grow, grid operators, policymakers and consumers are confronting the challenge of managing periods when electricity supply exceeds demand, writes Charlie Bush.

Solar power briefly became Europe’s largest source of electricity generation in June 2025. The milestone highlighted both the success of renewable deployment and the growing challenge of managing increasingly abundant electricity supply.


Solar photovoltaic (PV) capacity across the continent has expanded at extraordinary speed, and behind-the-meter installations on rooftops, car parks and commercial premises are now generating power on a scale few grid operators anticipated a decade ago. Much of this growth has been driven by households and businesses seeking lower energy bills, greater energy security and protection from volatile wholesale markets.

 

For policymakers and grid operators, the question is no longer whether solar can scale. That question has largely been answered. The challenge now is how electricity systems adapt to a future in which periods of abundant renewable generation are becoming increasingly common.

 

European solar expansion in numbers

  • EU solar capacity reached 406GW in 2025.
  • The bloc surpassed its original 400GW by 2025 solar target.
  • In 2024, 65.6GW of new solar capacity was added.
  • Solar now provides more than 13% of annual EU electricity generation.
  • Solar briefly became Europe’s largest source of electricity generation in June 2025.  

 

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