“The fact that renewable energy is failing to decarbonize the electricity sector may surprise many readers accustomed to breathless reports of the rapid growth of renewable energy around the world. What Christophers means by this, though, is that while renewable energy is growing rapidly in many places, these increases are not even keeping up with global growth in the demand for electricity.”
We’re using them. The problem is they aren’t replacing fossil fuels. Instead of a polluting coal plant, you have a polluting coal plant and a bunch of solar panels and wind turbines that were manufactured, transported, built from mined substances. It’s better than building another coal plant, but it’s not solving climate change. Power demand grows to use the available supply.