Nations are coming to grips with their overdependence on renewables //

Over the last decade, energy experts repeatedly assured policymakers around the world that increasing the use of renewables, while shutting down nuclear plants, would make energy supplies more secure, while lowering prices. To make their case, experts pointed to radical declines in the price of solar panels, wind turbines, natural gas, and lithium batteries. //

But the heavy reliance on renewables in Europe and the United States has made electricity supply more vulnerable to a single commodity’s volatility. Today’s electricity grids mean that high gas prices cause energy price spikes and a return to the dirtiest forms of electricity production, including diesel and coal.

The return to coal was most dramatic in Germany. Electricity from wind was 20% lower in Germany in the first half of 2021 than the first half of 2020, resulting in a 24% higher use of fossil fuels and 28% greater emissions from electricity. Coal was the number one source of energy for electricity in Germany in the first half of 2021, comprising 27% of total electricity.