Carbon-free electricity has never been more plentiful. Wind and solar power have taken off over the past two decades, faster than experts ever expected. But it hasn’t yet been enough to halt the rise of coal- and gas-burning generation.
That’s because global demand for electricity has grown even faster than clean energy, leaving fossil fuels to fill the gap.
The dynamic has pushed up carbon emissions from the power sector at a time when scientists say they need to be falling — and fast — to avoid dangerous levels of global warming.