Given the lifetime of the equipment and the relatively rapid transformation our power grid is undergoing, there are probably few places in the US where a heat p

Given the lifetime of the equipment and the relatively rapid transformation our power grid is undergoing, there are probably few places in the US where a heat pump doesn’t come out significantly on top emissions-wise. With an entirely natural gas grid, you only need a COP of 2 or so to beat the most efficient direct natural gas setups. Ten or fifteen years from now coal generation will probably barely exist in the US and we will have another few hundred GW of wind and solar.