Every use of power is incentivized to use the cheapest energy source. So the only way to solve CO2 climate effects is to make renewables be the cheapest.

Solar is getting cheaper following a learning curve, where every billion dollars spent makes it a few percent cheaper. It’s possible that an increase in power demand will get us to fully renewable energy faster. Solar competes well with coal for new capacity, but not for existing capacity. So growth in demand may cause a faster transition.