laggard. Though the IEA projects 58% capacity expansion by 2022, this will barely move the dial from 0.76% to 0.94% of global renewable generation.

Renewables broke new records in 2016, largely as a result of booming solar photovoltaic deployment in China, according to the International Energy Agency (IEA). The agency’s Renewables 2017 forecast, published this week, says solar capacity worldwide rose by 50% last year, to 74GW, of which almost a half was in China.

“China has...