It takes time for statistical agencies to compile reports. I haven't yet found reports covering the growth in renewable generation (actual terawatt hours) for all of 2025. But this covers 3 quarters of the year:
In the first three quarters of 2025, solar generation rose by 498 TWh (+31%) and already surpassed the total solar output in all of 2024. Wind generation grew by 137 TWh (+7.6%). Together, they added 635 TWh, outpacing the rise in global electricity demand of 603 TWh (+2.7%).
Ember is an absolute treasure. Often you'll see articles on HN from places like Elektrek which are blogspam linking back to Ember's original reporting.
Their electricity data explorer is to my knowledge the most complete on the open internet.
>At the global level, 2025 also saw a sharp rebound in non-renewable additions, which nearly doubled compared to 2024," IRENA noted. China led that drive, with 100 GW of non-renewable capacity added last year, most of which was coal.
Why is China adding so many new generation plants powered by coal? On this and other forums, I see claims all the time that solar is cheaper than coal. As the world's leading producer of solar panels, you would think that they would utilize it even more if those claims are true.
Is it just the need for power when the sun is not shining? Or is it something else?
My understanding is that China is planning to build a coal-backed renewable grid. Renewables, including storage, will provide the majority of the electricity generation, and then coal will step in when renewables aren't available. This involves building modern coal plants that can be spun up and down as needed, and then paying them not to generate. This is why actual emissions have plateaued and dropped, even as new coal capacity comes online.
We are (or were) doing something similar in the US, just using natural gas as the fuel rather than coal.
- They need something to provide electricity when the sun is not shining, while they install enough batteries and more than enough solar to use during the day and charge those batteries.
- They need some backup in case the Sun is dimmed for a few days, while they install enough solar to not need this anymore.
- They need some backup in case they grow too fast and the solar installations don't keep up.
- They need some backup in case there's some natural catastrophe, or some stupid dictator somewhere decides to start a war or something and destroy some vital energy infrastructure.
Their government has explained this a few times, but not on those words. It probably helps that those are government projects, and failing to deliver government projects is a very rude attitude that can end people's careers. But the rationale is sound too.
> Why is China adding so many new generation plants powered by coal? On this and other forums, I see claims all the time that solar is cheaper than coal. As the world's leading producer of solar panels, you would think that they would utilize it even more if those claims are true.
Because reality is very different of propagandists and lobby reports.
Currently, not a single major country right now can afford to have energy storage capacity large enough to pass, even a single day, without sun if running exclusively on solar power.
Not even China, the biggest battery provider world wide.
Considering that to get a stable and reliable grid, the needed capacity would need to supply for weeks during Dunkelflautes, this is realisitically not going to happen before multiple decades.
China has an energy problem it need to solve now: The country is developing so its electricity consumption is growing, rapidly.
Their solution is the most pragmatic on short term: Building coal plants.
Their long term solution is also the most pragmatic on long term: Using Nuclear energy to support the baseload and a mix of hydro, solar, wind for the peaks.
Mostly it's that solar doesn't work at night. That means you have to use batteries, which are impractical to store more than a certain amount of energy, after which you need another very large and stable energy source. So a nation-state that can't go dark must have a constant load source, such as nuclear, hydro, or coal. There's also limitations of geography, industry, production capacity, and other issues.
Part of China's "new" coal capacity is modern, efficient coal plants with lower emissions being built to replace old, inefficient, highly polluting ones.
Wait this is actually amazing, I had no idea it was that high. I can’t even believe what the US admin is doing, this is clearly the winning technology.
Makes sense - solar especially. It's just more financially smart to buy something that will generate electricity for 20-30 years with little to no maintenance than a plant that requires constant fuel, and is fairly complex mechanically with fluids and heat exchangers and turbines and so on. Panel efficiency keeps going up and prices keep going down, it's a snowball at this point.
Used to be this was almost entirely explained by hydro. Not a lot of new dams going in, and they take a long time.
The solar component is usually with caveats: the majority of growth. Because growth is slow otherwise. Solar is what part of renewables now? I couldn't easily see that stat in the noise.
Worked on the software side of increasing the rate of solar penetration in electricity networks between 2016-2020 via global solar radiation forecasting. The uptake of the software was slow the first year but then rapid once more electricity networks were struggling with knowing how much solar was in the network. Once it is easier to predict, the network becomes easier to manage, and more can be safely added, and make it economically profitable. Sucks this was a commercial operation, but excited to see all the hard work across various industries is solving problems to get more renewable energy into networks.
The problem is in power transmission. Transmission fee is a big part of the cost. Anything helping for at home generation should be encouraged.
Right now plug in solar is starting to appear. It is big in Germany. Utah has passed a law to cut the red tapes to allow home owners to install plug in solar themselves. More states should follow.
Solar capacity is always misleading because it’s intermittent. Capacity of a gas power plant can’t be compared to capacity of a solar power plant, even though it sounds like you are comparing the same thing. Would love to know total kWh generated.
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https://ember-energy.org/latest-updates/solar-and-wind-growt...
In the first three quarters of 2025, solar generation rose by 498 TWh (+31%) and already surpassed the total solar output in all of 2024. Wind generation grew by 137 TWh (+7.6%). Together, they added 635 TWh, outpacing the rise in global electricity demand of 603 TWh (+2.7%).
Their electricity data explorer is to my knowledge the most complete on the open internet.
>At the global level, 2025 also saw a sharp rebound in non-renewable additions, which nearly doubled compared to 2024," IRENA noted. China led that drive, with 100 GW of non-renewable capacity added last year, most of which was coal.
Why is China adding so many new generation plants powered by coal? On this and other forums, I see claims all the time that solar is cheaper than coal. As the world's leading producer of solar panels, you would think that they would utilize it even more if those claims are true.
Is it just the need for power when the sun is not shining? Or is it something else?
We are (or were) doing something similar in the US, just using natural gas as the fuel rather than coal.
- They need some backup in case the Sun is dimmed for a few days, while they install enough solar to not need this anymore.
- They need some backup in case they grow too fast and the solar installations don't keep up.
- They need some backup in case there's some natural catastrophe, or some stupid dictator somewhere decides to start a war or something and destroy some vital energy infrastructure.
Their government has explained this a few times, but not on those words. It probably helps that those are government projects, and failing to deliver government projects is a very rude attitude that can end people's careers. But the rationale is sound too.
> Why is China adding so many new generation plants powered by coal? On this and other forums, I see claims all the time that solar is cheaper than coal. As the world's leading producer of solar panels, you would think that they would utilize it even more if those claims are true.
Because reality is very different of propagandists and lobby reports.
Currently, not a single major country right now can afford to have energy storage capacity large enough to pass, even a single day, without sun if running exclusively on solar power.
Not even China, the biggest battery provider world wide.
Considering that to get a stable and reliable grid, the needed capacity would need to supply for weeks during Dunkelflautes, this is realisitically not going to happen before multiple decades.
China has an energy problem it need to solve now: The country is developing so its electricity consumption is growing, rapidly.
Their solution is the most pragmatic on short term: Building coal plants.
Their long term solution is also the most pragmatic on long term: Using Nuclear energy to support the baseload and a mix of hydro, solar, wind for the peaks.
The solar component is usually with caveats: the majority of growth. Because growth is slow otherwise. Solar is what part of renewables now? I couldn't easily see that stat in the noise.
Right now plug in solar is starting to appear. It is big in Germany. Utah has passed a law to cut the red tapes to allow home owners to install plug in solar themselves. More states should follow.