Roy Spencer's opinions on Climate Change are highly debatable, to say the least. But, on this point, I think he got it right. The only good use for fossil fuels is to use them to replace fossil fuels.
Roy Spencer came up with this rather counterintuitive suggestion in an interview with Catholic Online:
COL: Let’s say tomorrow, evidence is found that proves to everyone that global warming as a result of human released emissions of CO2 and methane, is real. What would you suggest we do?
SPENCER: I would say we need to grow the economy as fast as possible, in order to afford the extra R&D necessary to develop new energy technologies. Current solar and wind technologies are too expensive, unreliable, and can only replace a small fraction of our energy needs. Since the economy runs on inexpensive energy, in order to grow the economy we will need to use fossil fuels to create that extra wealth. In other words, we will need to burn even more fossil fuels in order to find replacements for fossil fuels.
h/t Brian Angliss