The question has come up a few times without being answered — what is the impact on efficiency of conventional power generation? (scienceofdoom.com)
Heat that is normally wasted in conventional power generation is recovered as useful energy, which avoids the losses that would otherwise occur from separate generation of heat and power. (aceee.org)
That would be in line with conventional power generation costs of today and might make it more economically attractive. (scientificamerican.com)