The only way, from an efficiency point of view, that it would make sense to burn gas in a home for heating is with a gas-fired heat pump (or home cogeneration driving an electric heat pump, and also using the waste heat). But these have not been installed much, probably because of cost.
The waste heat from the combined cycle plant could also be used for district heating.
Highest efficiency CC plants are like 62% efficient (but that's on a LHV basis, which ignores latent heat of water of combustion.)
The waste heat from the combined cycle plant could also be used for district heating.
Highest efficiency CC plants are like 62% efficient (but that's on a LHV basis, which ignores latent heat of water of combustion.)