There is something odd about the debate on China’s “overcapacity”. Europe says the world needs cheaper and faster clean energy deployment, yet complains when China produces the solar panels, wind turbines, batteries and electric vehicles that make this possible. Bruegel, a Brussels-based think tank specialising in economic policy, recently published a working paper, “To what extent can green infrastructure investment mitigate China’s clean-energy overcapacity?” It argues that China’s industrial...