Science Friday

How China Is Driving Down Electricity Costs With Renewables

January 28, 2026

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  • The claim that China only manufactures wind turbines but does not use them domestically is "completely wrong," as China has the world's largest installed wind capacity and is deploying renewables faster than the rest of the world combined. 
  • Solar energy is now the cheapest source of electricity in history, driven by massive Chinese production, which leads China to install huge amounts domestically (about 350 gigawatts last year) while exporting the surplus globally (excluding the U.S.). 
  • While China is electrifying its energy system and has reduced the *share* of coal in its electricity mix, it remains the world's largest producer of coal and emitter of CO2, though total coal usage actually decreased last year due to renewable deployment. 

Segments

Addressing Trump’s Wind Claims
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(00:01:17)
  • Key Takeaway: China possesses the world’s largest wind farm and uses its installed capacity, contrary to political claims.
  • Summary: China has the world’s largest wind farm with 7,000 turbines, visible from space. The assertion that China only manufactures wind turbines but doesn’t use them is factually incorrect. Curtailment, where turbines spin but power isn’t used due to supply exceeding immediate demand, is a normal part of managing renewable energy grids, not evidence of non-use.
China’s Renewable Capacity Scale
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(00:04:06)
  • Key Takeaway: China’s total electricity generating capacity is three times that of the U.S., with recent solar and wind additions equaling the rest of the world combined.
  • Summary: The U.S. has about 1,300 gigawatts of electricity generating capacity, while China has approximately 3,700 gigawatts across all sources. China installs as much solar and wind capacity annually as the rest of the world combined. Last year, China deployed 350 gigawatts of solar power alone, which is about a quarter of the U.S. total generating capacity.
Solar Exports and Global Impact
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(00:05:38)
  • Key Takeaway: China exports the majority of its massive solar panel production, driving down costs globally, especially in Africa and India.
  • Summary: China manufactured 600 gigawatts of solar panels last year, installing 350 gigawatts domestically and exporting the rest to nearly every country except the United States. Chinese-made photovoltaic panels are so cheap in Europe they cost less than fencing materials, enabling phenomena like ‘balcony solar.’ Exports are spiking in African nations and India, which imports components to build its own solar manufacturing base.
Fossil Fuels vs. Electrification
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(00:09:51)
  • Key Takeaway: China is electrifying its energy use, but its overall coal consumption only recently peaked, despite renewables growth.
  • Summary: In the U.S., only about 20% of energy use is electricity-based, whereas China has increased this to nearly one-third of its energy system. Although China’s electricity generation is still about half coal, the percentage share of coal is declining as solar and wind expand. Last year, China burned less coal than in previous years, indicating a potential peak in total coal usage.
Future Renewable Deployment Outlook
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(00:11:44)
  • Key Takeaway: A massive solar deployment spike in early 2025 was driven by developers rushing to secure older, more generous pricing agreements before new terms took effect.
  • Summary: In May 2025, China saw an incredible spike of 90 gigawatts of solar deployment, equivalent to three nuclear power plants daily. This rush occurred because new pricing arrangements for solar and wind electricity became less generous than previous terms. The key question for 2026 is whether development will slow down or continue robustly under the new, less favorable financial conditions.