Solar Power Leads Global Energy Growth for First Time

The world just passed an energy milestone that seemed impossible a decade ago.

Solar power became the single largest contributor to global energy demand growth in 2025, meeting more than a quarter of the world's additional energy needs. That's the first time in recorded history a renewable energy source has claimed the top spot.

The breakthrough comes from the International Energy Agency's latest report, which shows solar generation jumped by 600 terawatt hours last year. That's the biggest single-year increase ever recorded for any electricity source outside of post-crisis recovery periods, and it covered roughly 70% of the world's total electricity generation growth.

Electric vehicles hit another major threshold in 2025, with global sales crossing 20 million units. One in four new cars sold worldwide was electric. In China, half of all new car purchases were EVs for the first time ever.

Battery storage emerged as the fastest growing power technology, with 108 gigawatts of new capacity deployed globally. That represents a 40% jump from 2024, helping balance grids as more renewable energy comes online.

Europe surprised analysts by overtaking China as the fastest growing EV market, with sales rising 30% across the EU. Nuclear construction also picked up steam, with more than 12 gigawatts of new capacity breaking ground during the year.

The Ripple Effect

These shifts add up to something bigger than individual technologies. The combination of solar, wind, nuclear, electric cars and heat pumps deployed since 2019 now avoids 35 exajoules of annual fossil fuel demand. That's equal to roughly 7% of all global fossil fuel use.

India recorded near-flat carbon emissions for the first time since the 1970s. China saw coal-fired electricity generation fall for only the second time in five decades, as renewables and nuclear expansion outpaced demand growth.

The pace of clean energy deployment continues to accelerate, with each year bringing technologies that work better and cost less than the year before.