Oops I somehow read your comment as advocating for continued fossil fuel for electricity generation. Yes if the choice is between solar or nuclear, then yes nuc

Oops I somehow read your comment as advocating for continued fossil fuel for electricity generation. Yes if the choice is between solar or nuclear, then yes nuclear is definately the better option. We are going for an air source heat pump. A ground source heat pump will need bore holes to be drilled as there isn't enough space for ground loops, and the extra cost of that doesn't offset the decreased efficiency of the air source heat pump over the life of the system. The heat pump will primarily run when PV is generating more power than the rest of the house is consuming, and store heated water in a tank for consumption at night. We are building to Passive House standards. Space heating from the heat pump will use a maximum 1000kWh of electriciy per year (worst case assuming we get a long stretch of cold days below the operating temperature of the heat pump, and it has to fall back to resistance heating), while the PV should output around 9000kWh. We'll also have a wood stove as backup, but that will generate too much heat for primary heating. Net-zero isn't perfect as you say, but for the few winter months when we probably won't generate enough electricity to cover heating consumption I don't think it's that bad. Electricity generation in my country has an average of 300g CO2/kWh. I'd prefer not to use gas as our country imports gas from Russia, and I'd rather not depend on them. Plus gas leakage has a massive impact on ghg. We are in the late planning stages, so if you have any suggestions of further reading material please let me know :-)