nitpicking time :D > (assuming a 0.3g of CO2e per kWh It's kg there, not g. And this number is for the electricity, gas is 0.203 kg per kWh. If you are ind

nitpicking time :D > (assuming a 0.3g of CO2e per kWh It's kg there, not g. And this number is for the electricity, gas is 0.203 kg per kWh. If you are indeed heating with electricity, in france the electricity CO2 is almost always below 100g of CO2e per kWh.