Alexandra MorenoCoal remains undisputed as the world's top source of electricity generation, and 2026 is shaping up to prove it once again. The International Energy Agency expects coal fired power plants to produce 10,974 terawatt hours this year, close to a third of all electricity generated worldwide, far outpacing natural gas, hydropower, solar, wind and nuclear.
At a Glance
- Coal is projected to generate 10,974 TWh in 2026, nearly a third of global electricity output of 33,313 TWh.
- Natural gas trails far behind at 6,976 TWh, with hydropower, solar, wind and nuclear each producing less than 4,600 TWh.
- The war between the United States and Iran disrupted LNG flows through the Strait of Hormuz, pushing gas prices up and making coal more competitive.
- China generates over half the world's coal fired electricity, while India draws roughly 71 percent of its power from coal.
- The IEA expects coal generation to fall only about 0.9 percent a year through 2030, even as renewables expand quickly.
Why Coal Still Beats Everything Else
The scale gap is startling. Coal alone is expected to produce nearly as much power this year as natural gas and hydropower combined, and 77 percent more than wind and solar together. Renewables, taken as a group that includes hydropower, bioenergy and geothermal alongside solar and wind, are on track to edge past coal in 2026 for the first time. But that milestone only works as a collective comparison. No single renewable technology comes anywhere close to matching coal's output on its own.
How the Iran War Reshaped the Gas Market
Earlier forecasts had coal generation sliding 1.3 percent this year as renewable capacity grew and natural gas took a bigger share of the fuel mix. Then came the conflict between the United States and Iran, which cut into LNG supplies moving through the Strait of Hormuz. Gas prices jumped in Europe and Asia as a result, and utilities that can switch between fuels found coal suddenly cheaper by comparison. The IEA now sees gas fired generation holding roughly flat this year instead of rising 1.3 percent as previously expected, with coal picking up the slack.
Gas has typically been the fuel utilities lean on when wind drops off or solar output fades at night. Take that flexible, affordable gas supply away, and coal becomes the default backup once again. That dynamic is already playing out across parts of Asia and Europe.
China and India Anchor Global Demand
Coal's grip on the power sector is increasingly concentrated in Asia. China alone produces more than half the world's coal fired electricity, with coal supplying about 55 percent of the country's power in 2025, even as it built more wind and solar capacity than the rest of the world combined. India leans on coal even harder, drawing roughly 71 percent of its electricity from it last year, while Southeast Asia as a region sits around 48 percent.
For these countries, the shift toward cleaner power is not simply about swapping one fuel for another. Electricity demand itself is surging, so new solar and wind farms often need to meet fresh demand before they can even begin displacing coal capacity already in use.
Quick Facts
- China's electricity demand is forecast to grow 5.5 percent this year; India's by 7 percent.
- Global power demand is expected to rise 3.6 percent in 2026 and 3.8 percent in 2027.
- Total consumption climbs from 28,600 TWh in 2025 to a projected 30,700 TWh in 2027.
- Solar generation is expected to jump around 30 percent this year, wind about 10 percent.
Solar's Fast Growth Still Trails Coal's Head Start
Solar and wind are gaining ground quickly in percentage terms, but they started from a much smaller base. Even with a projected 30 percent jump in solar output and roughly 10 percent growth in wind this year, the two combined are expected to generate 6,187 TWh in 2026, still 44 percent below coal's 10,974 TWh. Add hydropower's 4,536 TWh and renewables as a bloc finally pull ahead of coal, but that framing mixes a fossil fuel against a category of very different technologies rather than comparing coal to any single rival on equal footing.
Coal's Long Runway Through the Decade
The IEA's Electricity 2026 outlook has coal keeping its position as the largest single source of electricity through 2030, with generation declining by an average of only 0.9 percent annually between 2026 and 2030. Renewables are expected to grow far faster over that stretch and cover nearly all of the increase in global demand, but that is a different task from actually shrinking coal's current output.
Replacing almost 11,000 TWh of annual coal generation means renewables have to do double duty: cover new demand and chip away at existing coal capacity at the same time. With global power consumption rising steadily and countries like China and India adding demand faster than most regions can build clean capacity, the question hanging over the next several years is whether renewable growth can ever outpace demand growth enough to actually shrink coal's role, rather than simply keep it from expanding further.
