CO2 removal and sequestration will be a net energy sink no matter what you do, since it amounts to “unburning” some portion of fossil fuel combustion that’s alr

CO2 removal and sequestration will be a net energy sink no matter what you do, since it amounts to “unburning” some portion of fossil fuel combustion that’s already been committed. The question is what methods are the least bad in terms of thermodynamics, and how much renewable and nuclear energy capacity are we willing to divert?