I remain skeptical that following this strategy will ever eliminate fossil fuels, because people will turn to them whenever renewables are underperforming. They'll see the price uncertainty and stick with gas because it works. We won't demolish the power plants because they're still needed 10 days a year. The fossil infrastructure will keep on chugging, just at a reduced scale. We'll eliminate 80% of CO2, and continue to cook ourselves with the last 20%. It's human nature to lose interest when the problem gets hard. Look how long it's taking to deploy IPv6, and that's relatively easy.

We should invest in the hard problem now, so fission can actually take us carbon-negative in 30 years. Maybe fusion will save the day, but that's a gamble, and it's really not that much better than Gen IV fission.