If you had the solar indexed UBI you could add hydrogen generation and backup, maybe even a bioreactor for making solein.

But I get your concern - excessive smoke from fires probably impacts many existing solar installations. It obviously increases with more fires. At some point, we will be more or less cut off from the sun, then we truly are finished, as far as I can see, that would be a final multiplier of the negative effects of mathematically negative energy use.