1. Renewables are only pennies per KWh because their intermittency, and the carbon costs backups required due to it, isn't being priced in.
2. Look at Texas's recent "hiccup" around Feb 15 and compare it to year before. Wind dropped to <10% reliable capacity and it was almost all picked up by gas/coal. The drop wind/solar production starts a week before the cold snap that disrupted everything else.