Is air conditioning a real problem? It probably emits a good bit less CO2 to cool a home 20 degrees than it does to heat it 40 degrees in the winter.
ACs can be coupled with solar power, with only a very small battery (reducing CO2 a lot). Or, as has become common in some European countries, an electric air heat pump could both heat and cool housing. With the additional benefit that you get hot water as a side product in cooling mode.