Renewables Just Beat Coal. The Clock Is Ticking.

For the first time on record, renewables outproduced coal in global electricity generation in 2025, generating 10,730 TWh against coal's 10,476 TWh. That crossover, documented in Ember's Global Electricity Review 2026, is the definitive data milestone the energy transition has been building toward for a decade. Coal's share of the global mix fell below one third for the first time ever. The symbolic weight is real, but so is the commercial signal buried inside the numbers.

Ember's annual review is the benchmark dataset the climate tech investment community reaches for when sizing markets and validating theses. Published this week, the 2026 edition lands at a particularly sharp moment. AI-driven electricity demand is surging across every major economy, grid operators are under pressure, and founders building in energy infrastructure, storage, and flexibility need hard numbers, not narratives. This report provides both the macro trend and the country-level granularity required to make real capital allocation decisions heading into H2 2026.

China remains the dominant force reshaping the global generation mix. It accounted for more than half of the worldwide increase in both solar capacity and solar generation in 2025, pushing the share of solar and wind in its domestic mix to 22%, which now exceeds the OECD average of 20%. India also accelerated sharply, with renewable generation growth doubling its previous record and new solar installations surpassing prior benchmarks. These are not incremental gains. They represent the two largest emerging electricity markets tilting structurally toward clean generation, which changes the total addressable market calculus for every founder selling into grid modernisation or distributed energy.

The implications for investors are layered. Coal's total generation has grown 13% since 2015, but overall electricity demand has grown 32% in the same period, meaning coal has been losing share even while adding volume. That dynamic is now reversing at the margin, with global coal generation falling 0.6% in 2025 and the IEA projecting a sustained declining trajectory through 2030. The European Union crossed its own threshold, with coal dropping below 10% of total generation for the first time. Markets where coal is retreating fastest are precisely where grid flexibility, storage, and demand response infrastructure face the highest near-term demand. Capital that maps onto those gaps is well-positioned.

The next 12 months will stress-test whether the crossover holds. The IEA projects low-emissions sources, renewables plus nuclear, reaching 50% of global generation by 2030, up from 42% in 2025. That trajectory compresses the window for infrastructure bets. Founders who use Ember's country-level data to identify which grids are structurally undersupplied in flexibility and storage, rather than chasing headline renewable capacity numbers, will find the more defensible opportunities. The historic crossover is the headline. The real story is what comes next when AI load growth and clean energy intermittency collide on the same grid.