Biofuels and wind would probably be the basis of the energy sector of a civilization reboot. All the easily extracted oil is long gone on earth. There used to

Biofuels and wind would probably be the basis of the energy sector of a civilization reboot. All the easily extracted oil is long gone on earth. There used to be deposits bubbling up from the ground, oil extraction now depends on several centuries of accumulated knowledge, industry, infrastructure, and resource maps to get to tar sands, deep water deposits, fracking, etc.