China bootstrapped using fossil fuels because that was the only technology available, but they've been transitioning away from using fossil fuels at a mind boggling rate. China still uses fossil fuels, but I think it's fair to call it an electrostate at this point.

• China’s carbon emissions have been in a structural decline since 2023 https://www.theguardian.com/business/2023/nov/13/chinas-carbon-emissions-set-for-structural-decline-from-next-year
• Clean energy was top driver of China’s economic growth in 2023 https://www.carbonbrief.org/analysis-clean-energy-was-top-driver-of-chinas-economic-growth-in-2023/
• China installed more solar in 2025 than rest of the world combined https://electrek.co/2025/09/02/h1-2025-china-installs-more-solar-than-rest-of-the-world-combined/
• China’s solar capacity surges; predicted to top 1 TW by 2026 https://www.rystadenergy.com/news/china-s-solar-capacity-surges-expected-to-top-1-tw-by-2026
• China is also building out nuclear at a breakneck pace https://www.economist.com/china/2023/11/30/china-is-building-nuclear-reactors-faster-than-any-other-country
• New energy vehicles account for 77.6% of China's public transport system https://www.shine.cn/news/nation/2403089981/

The US is mostly reliant on China, and china's manufacturing is slowly decreasing coal consumption, while rapidly increasing solar, wind and hydro.