Europa Posted on 2026-05-06 10:00:00

Solar energy, Europe's success - Grown by over 115% in 5 years. Energy system in a complex transition phase

From Dorian Koça

Solar energy, Europe's success - Grown by over 115% in 5 years. Energy

The rise of solar power in Europe has become one of the most visible success stories of the continent's energy transition. Solar power capacity has expanded much faster than any other energy source in Europe so far this decade, growing by over 115% since 2020 and causing a doubling of solar power supplies flowing through regional grids.

But the dizzying pace of growth has come with some complicated side effects. The continued production of solar energy is no longer just replacing fossil fuel production. It is reshaping the way electricity prices behave and energy markets function in Europe.

To address this, energy firms in Europe must now shift from focusing on adding capacity to integrating networks, building storage capacity and operating complex markets to ensure that the overall system remains fit for purpose for all energy consumers in Europe.

However, the increase in solar generation during the sunniest parts of the day can be so large that no amount of reduction in alternative sources can maintain system stability, especially in areas where baseload generation is slow to adapt. Subsidy structures that encourage renewables to remain in operation regardless of price serve to distort the signals received by market participants.

The net result could cause periods of negative energy prices, which may be of short-term benefit to some energy consumers but wreak havoc on the balance sheets of almost all energy producers.

Building the necessary flexibility and resilience into Europe's energy networks, so that they can cope with the constant fluctuations and ebbs of renewable energy production, will be costly and could take years.

Massive additions to battery capacity will be required so that excess solar power generated during the middle of the day can be stored for later delivery. Large-scale battery capacity in Europe has grown exponentially in recent years, with around 15 gigawatt hours of capacity added by 2025 alone. But if Europe is to successfully transition from an aging system heavily dependent on imported fossil fuels to a cleaner, more self-sufficient energy grid, massive and far-reaching improvements are required.

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