> Left alone, our economies will rapidly approach 100% renewable energy due to price alone. This is a fallacy. Just because renewables in most places are net p

> Left alone, our economies will rapidly approach 100% renewable energy due to price alone. This is a fallacy. Just because renewables in most places are net positive on price today at ~5% market penetration, there's no guarantee that they will remain cheaper than fossil fuels once you start having to pay for grid-scale energy storage. We might well end up with a 30% renewables, 70% fossil fuels situation as the outcome of market forces alone. Furthermore, it's not the total cost of energy from e.g. solar vs. coal power that affects the decision to shut down prematurely a coal powerplant. It's only when the total cost of energy from solar becomes less than the marginal cost of coal power that market forces will shut down the coal powerplant. This means market forces alone will take a very long time to transition towards the future equilibrium.