True but misleading. Natural gas has taken over, not renewables. Either way, hope to see an article declaring renewables make more power than natural gas soon.
Natural gas emits far less co2 per heat generated (don’t know how much exactly). Burning natural gas is bad, but not as bad as burning coal.
Getting at the natural gas requires fracking which ruins the surrounding environment. Large swaths of land across the US are uninhabitable with toxic water, soil and air as a result of fracking.
This is also why US CO2 emissions have been decreasing for years.