​Wind and solar double global share of power in five years

Image: Siemens Gamesa

Wind and solar energy doubled its share of the global power mix over the last five years, moving the world closer to a path that would limit the worst effects of global warming.

The sources of renewable energy made up nearly 10 per cent of power in most parts of the world in the first half of this year, according to analysis from U.K. environmental group Ember.

That decarbonization of the power grid was boosted this year as shutdowns to contain the coronavirus reduced demand overall, leaving renewables to pick up the slack.

Ember analyzed generation in 48 countries that represent 83 per cent of global electricity. The data showed wind and solar power increased 14 per cent in the first half of 2020 compared with the same period last year while global demand fell three per cent because of the impact of the coronavirus.

At the same time that wind turbines and solar panels have proliferated, coal’s share of the mix has fallen around the world. In some places, mainly western European countries, coal has been all but eliminated from electricity generation.

China relied on the dirtiest fossil fuel for 68 per cent of its power five years ago. That share dipped to 62 per cent this year and renewables made up 10 per cent of all electricity generated.

Still, the growth of renewables may not be going fast enough for the world to hit its climate goals and coal is still being burnt for power in many parts of the world.

Coal use needs to fall by about 79 per cent by 2030 from last year’s levels – a fall of 13 per cent every year throughout the decade to come, Ember said.

New installations of wind farms are set to hold more or less steady in the next five years, according to data from BloombergNEF. That will make it difficult to realize a sustained pace of doubling renewable power every five years.

“If your expectations are that we need to be on target for 1.5 degrees, clearly we’re not going fast enough,” said Dave Jones, an analyst at Ember.

As a switch to renewables and gas has dramatically reduced coal generation in Europe and the U.S., China is left with a growing share of the fossil fuel.

While it leads the world in new renewable power installations as well as building hydro dams and nuclear plants, the country still relies on coal for most of its growing power needs. China now makes up about 54 per cent of the world’s coal power generation, up from 44 per cent in 2015, according to Ember.

© 2020 Bloomberg L.P.