Global electricity generation from fossil fuels declined in absolute terms for the first time in history in 2025, marking a watershed moment in the energy transition as renewable capacity surged past coal to become the world's largest power source.
The 0.2% drop in fossil fuel generation represents a structural shift rather than a crisis-driven anomaly, according to analysis by Carbon Brief. Unlike previous declines tied to economic recessions or the COVID-19 pandemic, this reversal occurred during a year of robust energy demand growth—with solar and wind meeting 99% of that increase.
Renewable energy surpassed coal as the largest electricity source for the first time since 1919, driven primarily by solar expansion. Solar capacity alone grew 647 gigawatts in 2025, meeting 75% of global electricity demand increases while wind installations contributed another 24%. The pace of deployment exceeded even optimistic projections from a decade ago, when many analysts questioned whether renewables could scale rapidly enough to displace fossil baseload generation.
China led the clean energy surge, installing more solar capacity than the rest of the world combined. The nation's renewable build-out reflects both industrial policy priorities and air quality imperatives, as coal-dependent regions transition toward cleaner generation. Europe and the United States also posted significant gains, though at smaller absolute scales.
Yet the milestone arrives with sobering caveats. Total fossil fuel consumption continues to grow in transport and industry sectors, where electrification faces technical and economic barriers. Global emissions remain far above levels consistent with limiting warming to 1.5°C, the target established under the Paris Agreement. The International Energy Agency warns that even with accelerated renewable deployment, achieving net-zero emissions by mid-century requires simultaneous progress on energy efficiency, grid infrastructure, and hard-to-abate sectors.
"This is a historic inflection point, but not a victory," said Dr. Hannah Ritchie, an energy researcher at .
