Batteries are an even bigger deal. You can completely stop building single stage peaker gas turbines when it gets economical to just drop a 2GW / 1 GWh battery pack next to every gas plant. When demand spikes, you just discharge the battery while you heat soak the steam turbine and the drum to prepare it for increased load.
We’re too busy cranking out disposable e-cig cartridge batteries with our limited battery capacity. It’s like we know what’s right but just can’t seem to do it.