“Immediate and massive” renewables deployment quadrupling last year's record-setting build and a halt to new fossil fuel projects are needed if the world is to tread a “narrow but still achievable” path to a net-zero energy system by 2050, said the International Energy Agency (IEA) in a major new report.

The Paris-based body wants annual solar additions to hit 630GW by 2030 with wind adding 390GW a year to give the planet a chance of achieving the emissions reductions needed to limit global temperature rises to 1.5°C.