Global electricity demand grew again last year, but the most important part of the story is how that demand was met. According to new research, all of the increase in 2025 was covered by renewable energy, while electricity generation from fossil fuels stayed broadly flat. For supporters of the energy transition, that marks a potentially significant turning point: clean power is no longer just adding to the system, it is beginning to meet new demand without requiring more fossil generation.
The standout force behind that shift was solar. Output from solar power rose by nearly a third in 2025, setting another record and reinforcing its status as the fastest-scaling source of electricity in the world. Over the past decade, solar generation has increased roughly tenfold, a pace of expansion that would once have seemed unrealistic. It is now becoming the central engine of global clean power growth.
That momentum matters because electricity demand is not slowing. As economies grow, populations urbanize and more sectors move toward electrification, the world will need much more power. The fact that renewables are now absorbing that growth is exactly what climate advocates have long argued must happen before fossil fuel use can begin a lasting decline.
Solar Is Now Doing Most Of The Heavy Lifting
The numbers show just how dominant solar has become. It accounted for roughly three-quarters of the increase in global electricity demand last year, with most of the rest met by wind. That means the expansion of clean electricity is no longer being shared evenly across many technologies. Solar has clearly taken the lead.
This is not just a matter of environmental ambition. Solar is proving able to scale at a speed that few other energy technologies can match. Costs have fallen sharply, installation has accelerated and battery storage is making solar output more useful beyond daylight hours.
In practical terms, solar is moving from being one piece of the transition to becoming the technology that increasingly defines it.
China Remains The Main Driver
More than half of the increase in global solar generation came from China, which continues to dominate clean energy manufacturing and deployment. Its scale is now so large that changes in Chinese energy policy and investment trends shape the global market more than those of almost any other country.
That has major implications. China is not only building huge amounts of renewable generation at home. It is also exporting clean energy components to the rest of the world, helping lower costs and accelerate adoption elsewhere. Whether viewed strategically, economically or environmentally, China remains at the center of the global clean power story.
For countries trying to reduce fossil fuel dependence, that creates both opportunity and complexity. Access to cheaper technology can speed transition, but it also increases reliance on a supply chain dominated by one country.
India Is Starting To Shift Faster Too
India also stood out in the latest figures. The country added record amounts of clean electricity generation, enough to outpace growth in power demand and reduce the expansion of fossil fuel generation. That is especially notable because India’s economic rise has long been closely linked to coal.
If India can continue to grow while increasingly relying on renewables, it would represent one of the most important structural changes in the global energy transition. The country’s future energy path matters enormously because of its size, population and development needs.
That does not mean coal is suddenly disappearing from India’s economy. But it does suggest that the old assumption, that growth in major emerging economies must automatically mean more fossil fuel power, is becoming less secure.
Renewables Have Pulled Ahead Of Coal
Another symbolic milestone in the report is that renewables accounted for 34% of global electricity generation in 2025, slightly overtaking coal at 33%. On its own, that does not end the role of coal in the global power system, but it is an important sign that the center of gravity is moving.
For years, coal remained the single biggest source of electricity worldwide, even as wind and solar expanded rapidly. Now that balance is beginning to change. The significance lies not only in the percentage itself, but in what it suggests about direction: renewables are no longer simply catching up. They are starting to move ahead.
If that trend continues, 2025 may come to be seen as one of the years when the power system began to tilt more decisively away from fossil fuels.
Batteries Are Becoming More Important
The report also highlights how battery storage is strengthening the role of solar. A growing share of additional solar power is now being used later in the day rather than only at the moment it is generated. That matters because one of the main criticisms of solar has always been its intermittency.
As storage expands and prices continue to fall, solar becomes more valuable to the grid. It stops being only a daytime resource and starts becoming part of a more flexible electricity system. This helps explain why renewable growth is becoming more structurally important rather than just more visible.
In other words, the clean energy story is no longer only about generation. It is increasingly about how that generation is stored, shifted and integrated.
The Next Challenge Is Much Bigger
Even with this progress, the transition is far from complete. Transport and heating still depend heavily on oil and gas in many countries, and moving those sectors toward electricity will push demand much higher in the years ahead. That means the world will need not just more renewable generation, but also stronger grids, better infrastructure and smarter regulation.
This is where the next phase begins. Clean energy is now scaling fast enough to meet rising electricity demand, but keeping that momentum will require power systems capable of handling a far more electrified world. Generation alone will not be enough.
The significance of 2025, then, is not that the transition is finished. It is that the balance is changing. Renewables are no longer a side story in global electricity growth. They have become the main story.
