Renewables Surge Past Coal in Global Electricity Generation
In a groundbreaking shift for the planet’s energy landscape, renewables have officially overtaken coal as the world’s top source of electricity generation in the first half of 2025. This milestone, highlighted by fresh data from the respected global energy think tank Ember, marks the first time clean power has claimed the lead. It’s a moment that signals hope for a sustainable future, even as challenges persist in balancing growth with reliability.Global electricity demand continues to climb, driven by population growth, industrialisation, and the rise of electric vehicles and data centres. Yet, the explosive expansion of solar and wind energy was nothing short of remarkable—it covered 100% of this additional demand.
Remarkably, this surge not only met the extra needs but also contributed to a small dip in the use of coal and gas for power generation. For the first time, clean sources are proving they can keep pace without leaning harder on fossil fuels.However, this headline-grabbing achievement hides a more nuanced story. The world isn’t transitioning uniformly. Developing nations, particularly China, are at the forefront of the renewables revolution, while wealthier countries like the United States and the European Union have seen increased dependence on gas and coal. This growing divide could widen further, as warned in a recent International Energy Agency (IEA) report, which forecasts slower renewables growth in the U.S. due to policy shifts under the current administration.
The Global Picture: Winners and Laggards in the Energy Transition
Coal has long been the king of energy production, holding the title of the largest single source of electricity for over five decades, per IEA data. In 2024 alone, it still dominated. But 2025’s first-half data shows renewables pulling ahead collectively. Solar and wind led the charge, with solar alone accounting for 83% of the global increase in electricity demand. This isn’t a fluke—solar has been the biggest contributor to new electricity for three straight years.China deserves much of the credit for this global tipping point.
The country is simultaneously expanding its coal plants and leading the world in clean energy additions. In the reported period, China installed more solar and wind capacity than every other nation combined. This allowed its renewables output to outstrip rising electricity needs, resulting in a 2% drop in fossil fuel generation, including coal and gas.India followed a similar path, though with slower demand growth. Significant investments in solar and wind helped the country reduce reliance on coal and gas, showcasing how targeted clean energy policies can yield quick wins in emerging economies.The story flips in developed regions. In the U.S., electricity demand grew faster than renewables could supply, forcing a greater turn to fossil fuels like gas and coal. Europe faced its own hurdles: prolonged periods of low wind speeds and hydropower shortages pushed the EU to burn more coal and gas to keep the lights on.
These setbacks highlight the intermittency issues that renewables still face, especially without robust storage or backup systems.The IEA’s updated projections paint a stark picture for the U.S. Just a year ago, it anticipated 500 gigawatts (GW) of new renewables capacity—mostly solar and wind—by 2030. Now, that’s been slashed to 250 GW, largely blaming policy changes that favour fossil fuels. This contrast with China’s approach is striking: while Beijing exports clean tech at record levels, the U.S. pushes for more oil and gas sales abroad. The IEA calls this the clearest evidence yet of how national policies are reshaping the global energy map.
Solar Power: The Undisputed Star of Renewables Growth
At the heart of this renewables boom is solar energy, now the fastest-growing source of electricity worldwide. Costs have plummeted an astonishing 99.9% since 1975, making it cheaper than ever. In many places, solar is so affordable that entire markets can explode in a single year, especially where grid electricity is pricey or unreliable.Lower-income countries now generate 58% of global solar power, up dramatically in recent years. Pakistan exemplifies this trend: in 2024, it imported solar panels for 17 GW of capacity—double the prior year and equivalent to about a third of its existing electricity infrastructure.
Africa is another hotspot for solar energy. Panel imports jumped 60% year-over-year through June 2025. South Africa, traditionally coal-dependent, led the continent, but Nigeria surged ahead of Egypt with 1.7 GW of new solar—enough to power around 1.8 million European homes. Smaller nations saw even wilder growth: Algeria’s imports rose 33 times, Zambia’s eightfold, and Botswana’s sevenfold.This rapid adoption brings benefits but also unforeseen issues. In Afghanistan, solar-powered water pumps are depleting groundwater faster than expected. Experts warn that some areas could dry up in five to ten years, risking millions of livelihoods. It’s a reminder that even clean energy solutions need careful management to avoid environmental pitfalls.
Regional Challenges: Sun Belt vs. Wind Belt Dynamics
Not all paths to renewables are equal. Adair Turner from the UK’s Energy Transitions Commission points out the divide between “sun belt” and “wind belt” countries.Sun belt nations—spanning much of Asia, Africa, and Latin America—face high daytime electricity demands for air conditioning. Solar pairs perfectly here, with falling battery costs enabling storage for evenings. These regions can slash energy bills almost overnight by going solar.Wind belt areas, like the UK, have it tougher.
Wind turbine prices have dropped only about a third in the past decade, far less than solar. Rising interest rates have inflated installation costs, and winter wind lulls can persist for weeks. Batteries alone can’t bridge these gaps, often requiring gas plants or even nuclear as backups. This makes wind-heavy systems more complex and costly.Nuclear energy, often overlooked in renewables discussions, could play a bridging role. It’s a low-carbon baseload source that provides steady electricity without the intermittency of wind or solar. Some countries are revisiting nuclear to complement renewables, ensuring grid stability as fossil fuels phase out.
China’s Dominance in Clean Energy Tech
No discussion of renewables is complete without China. New Ember data reveals its clean tech exports hit a record $20 billion in August 2025 alone. Electric vehicles surged 26% in sales, batteries 23%. Combined, EVs and batteries now outweigh solar panel exports by more than double in value.This dominance extends to manufacturing: China produces most of the world’s solar panels, wind turbines, and batteries. It fuels global renewables growth while keeping its own energy mix evolving—adding coal for reliability but dwarfing that with clean additions.
A Crucial Turning Point for Global Energy
Ember’s senior analyst, Malgorzata Wiatros-Motyka, hails this as a “crucial turning point.” Clean energy is finally matching demand growth, reducing the need for dirtier sources like coal and gas.Yet, the road ahead isn’t smooth. Policy inconsistencies, supply chain issues, and the need for grid upgrades loom large.
Nuclear could help in high-demand scenarios, providing carbon-free electricity around the clock.For bloggers and energy enthusiasts, this shift offers excitement and caution. Renewables are winning, but success depends on inclusive policies that address regional differences. Developing worlds are leaping ahead with solar, while others grapple with wind and storage.As we hit this milestone, the message is clear: the energy future is brighter and cleaner, but it requires global cooperation. Whether through solar booms in Africa, wind farms in Europe, or nuclear revivals elsewhere, the goal remains reliable, affordable electricity for all—without overheating the planet.