Cost efficiency of renewables is a problematic topic, because it tends to avoid discussing their intermittency, only how much power costs when they happen to wo

Cost efficiency of renewables is a problematic topic, because it tends to avoid discussing their intermittency, only how much power costs when they happen to work (which isn't under control). So you have other side of the coin where renewable buildup ends up with fossil fuel burning to cover the inevitable shortages, while peak renewable low costs are used to badger dispatchable tech into non-existence