Cheapest electricity is natural gas one. Imagine a natural gas plant with free natural gas. That would decrease the electricity price by about 1/3 (fuel price i

Cheapest electricity is natural gas one. Imagine a natural gas plant with free natural gas. That would decrease the electricity price by about 1/3 (fuel price is up to 2/3 of natural gas based generation, and the generation is between half and 2/3 of electricity price). The fusion power plant ideally is equivalent of that free natural gas power plant. Though it can't be further from it on practice. Any feasible in the observable future fusion involves neutrons. That in addition to affecting reactor design - cost and complexity of building, operating and maintenance - brings in the whole regulatory regime just a notch lighter than fission. Taken together we'd be lucky to match the current natural gas - I personally think no chance in hell. Carbon emission of natural gas isn't an issue because nobody [who matter] cares about it today, and then, when the issue is finally forced for resolution, adding carbon sequestration would still be a comparatively minor expense. And that not even talking about already free fusion used in solar and wind based generation - hard to beat economics of that fusion reactor.