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For years, the European energy transition advanced without completely displacing fossil fuels. Last year marked that turning point. According to the report European Electricity Review 2026wind and solar generated 30% of EU electricity in 2025, surpassing coal, gas and oil combined for the first time, which fell to 29%. As Dr. Petrovich explains by Emberwe are facing record growth. It is not normal to go from a 20% to 30% quota in just five years, but the numbers are there. The energy map is changing: there are now 14 EU countries where wind and sun generate more than gas or coal. In this scenario, Spain, Greece or Hungary already play in the league of solar powers. Beyond statistics. The milestone does not imply that Europe has left fossil fuels behind or that gas has disappeared from the system, but rather that it changes the hierarchy of the electricity mix. For the first time, variable renewable energies come to occupy the center of the electricity mix, while fossils are relegated to a technical and security support role. According to Emberrenewable energies as a whole contributed 48% of the EU’s electricity in 2025, practically half of the total, a figure that remained stable even in a year marked by adverse weather conditions, with less wind and less rain than usual. Coal, the most polluting fuel in the system, continues its withdrawal. In 2024 it fell to 9.2% of the European electricity mix, a historical minimum compared to the almost 25% it represented a decade ago. Gas, for its part, rose slightly compared to 2024, although it is still 18% below its 2019 maximum, confirming that its role in the system is increasingly residual. This rebalancing has consequences that range beyond the energy mix: Dependence on imported fossil fuels continues to be the main source of price instability and strategic vulnerability in Europe, even outside the climate debate. Five years that changed everything. The sorpasso – as it has begun to be called in the sector – is not the result of a mild winter or a stroke of meteorological luck. It is the consequence of sustained growth, especially in solar energy, during the last decade, accelerated very notably in the last five years. According to the reportsolar generation grew by 20.1%, this being the fourth consecutive year with increases of more than 20%, an unprecedented growth rate in European energy history. In absolute terms, solar reached 369 terawatt hours (TWh), more than double that of 2020, and the annual increase in 2025 alone is equivalent to the electrical production of three French nuclear reactors. A dizzying growth. This expansion responds mainly to the installed capacity. In 2025, 65.1 GW of new solar power was added in the EU, distributed almost equally between large plants and self-consumption on rooftops. All community countries increased their solar production, and in several of them—Hungary, Cyprus, Greece, Spain and the Netherlands—the sun already provides more than 20% of national electricity. As for wind power, although more affected by the weather conditions at the beginning of the year, it remains the second largest electricity source in the EU, with 17% of the total, above gas. The system, therefore, begins to rely structurally on variable renewables, something unthinkable just a decade ago. The reverse of success: when gas continues to set the price. Despite the historic advance of wind and solar, 2025 made it clear that gas continues to have a disproportionate weight in the European electricity system, especially in price formation. According to the think tank, gas-fired electricity generation increased by 8% in the EU, mainly to compensate for the drop in hydroelectric energy caused by the drought, and this greater use of gas raised the electricity sector’s import bill to 32 billion euros, 16% more than the previous year. The impact was especially visible in the electricity markets. Ember detects that price spikes They are concentrated in the hours with the highest gas use, while the hours with abundant solar and wind tend to make electricity cheaper. In 21 European countries, wholesale prices rose in 2025, driven almost exclusively by these fossil time slots. This is where the paradox of the current system: although gas no longer dominates by volume, it continues to set the marginal price of the market at critical moments. In other words, despite the oversupply, the price structure continues to be conditioned by fossil fuel when there is a lack of wind or sun. The new energy frontier. Ember’s report devote an entire chapter to what it considers the next big front of the transition: storage and system flexibility. Without these pieces, he warns, the sorpasso runs the risk of remaining a statistical victory. This was one of the large deficits of the European transition: investing massively in generation without doing so at the same pace in networks and storage. Batteries are now emerging as the piece that connects renewable success with stable prices and security of supply. Last year, the EU exceeded 10 GW of large-scale batteries in operation for the first time, more than double that of 2023. In addition, there is a portfolio of projects that could raise that figure above 40 GW if fully implemented. The first signs are already visible in countries like Italy, where batteries have begun to cover part of the demand during peak gas hours, reducing prices and displacing fossil generation. Physical bottlenecks: European infrastructure. It is not just a question of how much energy is generated, but where it enters and how it circulates within the continent. Europe has reduced its direct dependence of Russian gas, but continues to face physical limitations in terminals, transportation networks and cross-border connections. This substitution of Russian gas has been slowed by the slowness in the construction of critical facilities, such as regasification terminals and high-capacity networks, and by the insufficient interconnection between national electrical systems. This bottleneck explains why countries with abundant renewable production, like Spain, often cannot easily export that surplus, or why the European … Read more