There is nothing that physically and technologically limits us from doing it all with renewables. There are only cynical or specious arguments that say we can’t. The biggest barriers remaining have the same origin: inertia and the stubborn insistence on the current way of doing things. This manifests as fossil-fuel subsidies and massive misinformation campaigns. It’s also buried in old ways of doing things, like the state-sponsored utility monopoly, which gives low interest rates to big projects instead of to consumers who need to swap their gas heaters for solar and heat pumps.
