Solar and wind power have moved from being the future of electricity to the present reality. In 2025, a remarkable 86% of all new electricity-generating capacity worldwide came from renewable sources. Solar power alone made up about three-quarters of that total, according to fresh data from Ars Technica.
To break it down simply: for every 100 units of new power-generating equipment installed globally last year, 86 of them produced clean energy. Out of those 86, around 65 were solar panels.
Why This Number Matters
“Installed generating capacity” refers to the maximum electricity that a power source can produce. Think of it like the horsepower rating on a car engine. This metric doesn’t tell us how much electricity was generated, but it shows where countries and utilities are investing for the future.
When 86% of new investments focus on renewables, it indicates a significant economic shift. Solar and wind have become cheaper options than new coal or natural gas plants in many regions, and the construction numbers reflect that trend.
Solar’s Breakout Role
Solar photovoltaic (PV) technology, which converts sunlight directly into electricity using semiconductor panels, has seen costs plummet by around 90% over the past decade. This dramatic price drop is clearly visible in global installation figures.
| By The Numbers: 2025 Global Power Capacity | |
|---|---|
| Share of new capacity from renewables | 86% |
| Share of renewables from solar | ~75% |
| Estimated solar share of all new capacity | ~65% |
| Remaining new capacity (fossil fuels + nuclear) | 14% |
What About the Other 14%?
Fossil fuels and nuclear power made up 14% of new capacity additions in 2025. That doesn’t mean coal plants are vanishing overnight — existing plants still operate and supply a substantial portion of global electricity. However, the trend is clear: nearly all new construction is focused on clean energy. This shift means the overall grid becomes greener each year, even before older plants are retired.
Think of it like a city’s vehicle fleet. If 86% of new cars sold are electric, the roads will still have plenty of gas-powered cars today. But that mix changes every year.
What This Means for Everyday Users
If you live in an area that has added significant solar capacity recently, you’re likely experiencing a few benefits:
- Lower electricity bills during the day. In many markets, power prices drop sharply around midday when solar output peaks. Some utilities pass those savings directly to customers with time-of-use pricing plans.
- Cleaner power for your devices. Every EV you charge, every appliance you run, and every phone you plug in pulls from a grid that’s increasingly renewable — even if you haven’t installed a single solar panel yourself.
- More grid reliability questions ahead. Solar generates power when the sun shines, which isn’t always when people need it most. Battery storage systems that can hold solar power for later use present the next big infrastructure challenge, and investment in that area is ramping up along with solar development.
Community Reaction
“The fact that solar is 65% of ALL new capacity globally is kind of stunning. That’s not a niche anymore, that’s the default.”
“People keep asking when renewables will take over. They’re not taking over — they already have, at least for new builds. The question now is how fast the old stuff gets retired.”
What To Watch
- Battery storage deployment figures for 2025 should be released alongside these capacity reports. Keep an eye on whether storage keeps pace with solar additions, as that will determine how useful all that new capacity is after sunset.
- The 14% holdout. Which countries or regions are still building the majority of new fossil fuel capacity? Look for regional breakdowns from the International Energy Agency (IEA) and IRENA (the International Renewable Energy Agency) in upcoming quarterly reports.
- Grid reliability incidents. As solar’s share of real-time electricity generation increases, grid operators will face new balancing challenges. Major reliability events in high-solar regions will draw significant policy attention in 2026.
- The 2030 targets check-in. Many countries have set ambitious renewable capacity goals for 2030. With 2025 data now available, analysts will begin evaluating whether those targets are on track or if the pace of buildout needs to speed up.
Sources: Ars Technica: Renewables dominate 2025’s newly installed generating capacity
