Sir I'd like you to step out of the car and breathe into this Kool-Aid detector.
Planets aren't going to be colonized like colonies were on this Earth. Economic growth and prosperity have decoupled not only from fossil fuels, but it's no longer a function of energy consumption in general. Humans simply do not flourish without the Earth ecosystem. The future you paint here is only credible to 13 year-old boys who just finished their third Jerry Pournelle book.
Planets aren't going to be colonized like colonies were on this Earth. Economic growth and prosperity have decoupled not only from fossil fuels, but it's no longer a function of energy consumption in general. Humans simply do not flourish without the Earth ecosystem. The future you paint here is only credible to 13 year-old boys who just finished their third Jerry Pournelle book.