If we could only harness the engine of the stars, it would uncork near limitless energy and neatly sweep away a whole mess of humanity’s problems. Solar panels and wind turbines capture the fusion of the sun and convert it to electricity. Across the entire country, those 12 months saw some 50 gigawatts of new solar capacity added. In China, the first three months of 2025 alone saw 60 gigawatts of new solar capacity added to the national grid. Any solar capacity that went in after May 2025, Beijing declared, would no longer get this deal.