I agree. Whenever numbers show that China is the largest CO2 polluter currently, it needs to be mentioned that China manufactures much of the world's physical goods.
- Peak coal usage is likely to be very soon in China (this year even according to some); after that coal usage flatten and start declining; all the way to a planned net zero in the 2060s.
The newer plants are designed to be more efficient, more flexible, and less polluting than the older ones. They are better at starting/stopping quickly/cheaply. Older coal plants used big boilers that had to heat up to build up steam before being able to generate power. This makes stopping and starting a plant slow and expensive. Because they consume a lot of fuel just to get the plant to the stage where it can actually generate power. The more often plants have to be stopped and started, the more wasteful this is. With the newer plants this is less costly and faster.
This makes them more suitable to be used in a non base load operational model where they can be spun up/down on a need to have basis. This is essential in a power grid that is dominated by the hundreds of GW of solar, wind, and battery.
What a lot of people also miss is that we’re in the age demographic bomb, where the global population is both aging rapidly and declining at the same time I.e. japanification
This means that global consumption will decline too which coincides with both factories and power plants shutting down
Their existing grid uses coal because they have coal, just like the US uses gas because it has gas. And obviously as old coal plants are retired they're going to build new ones. They don't use the new plants for additional capacity. As they add more solar and storage, which they're building a lot of, they're going to absolutely crush the coal burning too. It's literally a national security issue for them.
This even compares cars built in an unrealistic 100% coal grid, and fuelled on 100% coal grid. Driving 14k miles a year for 10 years a Tesla Model 3 built under those extreme conditions beats a gas Fiat 500
As other posters below you have pointed out, it's not as simple as you make it out. You can't just stop building power plants overnight. The population and demands of China are growing and those needs need to be met immediately. There is no simpler, more understood way of rolling out new energy than building coal & gas power plants.
But look at the data. They are building clean energy solutions at a faster rate than any other country on the planet - by a huge margin. Scaling clean energy solutions is what we need, and it has to be done alongside the gradual phase-out of coal and gas.
Lots of people who don't read the HN Guidelines, apparently:
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Supposedly they have been replacing old dirty coal plants with new cleaner ones alongside massive developments in renewables and nuclear. Getting air pollution controlled as fast as possible requires doing everything at once.
As other comments already point out, chinese coal power plants do not always operate under full load. They also decomission older more polluting ones.
Setting that aside, China has also dramatically pushed the electrification of their transportation sector like no one else. Considering BEVs and other electric modes of transport require less primary energy than fossil fuel equivalents, this checks out.
Coal is a lot cheaper and easier than modern energy sources when your goal is modernizing rural areas. Meanwhile, urban centers are decommissioning old emissive power plants and shifting to renewables. It's a fine way to do green transition and rural development.
By what measure? Coal hasn't been competitive for decades and the only way it had remained competitive in terms of cost per MWh even back then was if you burned it in huge (> 1GW) plants. 1GW plants are the very opposite of what you want to electrify rural areas - construction is slow and expensive, operating large plants requires considerable and qualified head-count, logistics is an issue and they require high capacity and expensive transmission systems.
And if your minimum unit size is 1GW then you lose the flexibility to roll out the tech incrementally - the average modern coal plant requires 3 to 5 weeks per year for scheduled downtime for maintenance - so your first 1GW coal plant requires a bunch of other generation sources to cover demand during these periods.
Solar and batteries are the obvious solution for rural electrification: scaleable, cheaper/simpler to deploy - no large scale civil engineering involved, trivial to "operate", effective without the support of big transmission systems and it's possible to buy everything off-the-shelf.
Coal requires transport and extraction which are both pretty expensive processes.
In my home town of ~300 people, there was just a couple of houses which used coal for heating. That's because sourcing and transporting coal was quiet expensive.
Electric heating was much more common. Even the old expensive baseboard resistive heaters.
When we talk about extreme rural areas, what you end up finding is solar and batteries end up being the most preferred energy sources. This has been true for decades. That higher upfront cost is offset by not having to transport fuel.
It's why you'll find a lot of cabins in pretty remote locations are ultimately solar powered. This is long before the precipitous price drop of solar.
How is coal cheaper and easier than buying and deploying solar panels and batteries. Both of which require basically zero additional infrastructure to deploy.
Last I checked mining and transporting coal required quite a lot of heavy industry equipment to do even vaguely economically.
If coal was cheaper and easier than other sources of energy, then the US would be building more coal power plants. But even with the Trump administration placing its weighty thumb on the scale to try and “save coal”. Coal plants are still being shutdown due to simple economics.
If existing plants can compete with renewables, to hard to understand how adding the cost of building new plants is going to change that.
It should be noted that the research from this article acknowledges that official Chinese coal consumption figures are often unreliable or subject to massive retrospective revisions. To compensate, the author uses "apparent consumption" (production + imports - exports +/- inventory changes) and power generation data. This methodology assumes perfect reporting of coal production and inventory levels across thousands of mines and plants. Historically, "statistical discrepancies" in Chinese energy data have masked millions of tons of CO2. If local provinces underreport coal use to meet "Dual Control" energy targets, the "flat or falling" trend could be a reporting artifact rather than a physical reality.
The article also notes that solar and wind capacity grew significantly faster than actual generation, suggesting "unreported curtailment" (where clean energy is wasted because the grid can’t handle it). If curtailment is rising, it means the "clean energy boom" is hitting a hard infrastructure ceiling. The research assumes that if grid issues are resolved, emissions will fall further. However, if the grid cannot integrate this power fast enough, the 290GW of coal power currently under construction will be called upon to fill the gap, potentially leading to a sharp emissions rebound in 2026–2027.
Further, a major driver of the emissions drop is the 7% decline in cement and 3% decline in steel emissions, linked to the ongoing real estate slump. This is a cyclical economic event, not necessarily a green technological victory. If the Chinese government pivots to a new stimulus package (e.g. massive "New Infrastructure" or high-tech manufacturing zones) to save GDP growth, the demand for steel and cement could surge again. The research treats the real estate decline as a permanent plateau, but China’s history of state-led investment suggests that industrial emissions can be turned back on by policy shifts.
Further, the analysis focuses almost exclusively on CO2. China is the world's largest emitter of methane, primarily from coal mine leakages. Even if CO2 emissions from burning coal are flat, continued coal production to feed the coal-to-chemical industry (which grew 12% in this report) results in significant methane venting. If you account for the Global Warming Potential (GWP) of methane, the total greenhouse gas trend might look much less optimistic than the CO2-only trend.
Further, the report credits a 3% increase in hydropower for helping suppress coal. Hydropower in China is extremely volatile and dictated by weather patterns (e.g. the 2022–2023 droughts). A single dry year in the Sichuan or Yunnan provinces can force a massive, immediate pivot back to coal-fired power to prevent blackouts. The 21-month trend may be as much a result of favorable rainfall as it is of solar panels, making it fragile and reversible.
Further, the report highlights a 12% growth in emissions from the chemical industry, driven by coal-to-liquids and coal-to-gas projects. This suggests that China is not decarbonizing its economy so much as re-carbonizing its industrial feedstocks. As China seeks energy security to reduce its reliance on imported oil and gas, it is building a massive coal-based chemical infrastructure. These emissions are harder to abate than power sector emissions and could eventually offset the gains made by wind and solar.
Ultimately, China is still the largest polluter (in every sense of the word) by a large margin. It's nice to see them taking steps to curb this, but we should all remember that any environmental benefits are purely coincidental to their goals of energy independence. We should expect them to rely on a diverse mix of sources - including the 8+ "mega" coal power plants coming online every month.
It should also be mentioned that despite being the factory of the world, China's CO2 emissions per capita are nearly half of the United States and comparable to some European countries.
> It should also be mentioned that despite being the factory of the world, China's CO2 emissions per capita are nearly half of the United States and comparable to some European countries.
To be fair, there's a large (~300mn) agricultural population in China who don't use developed country levels of energy. Nonetheless, this is still good.
Rural areas do not use much energy but Chinese cities are also more energy efficient per capita because of density and use of public transportation, walking, or electric mini scooters.
