Calculate household energy use, cost and emissions across fuel types.
Gas has a fixed carbon intensity because it is combusted directly, while grid electricity improves each year as generation decarbonises. On a low-carbon grid, gas heating now emits more per kilowatt hour than electricity. This crossover is why electrification of heating reduces emissions in most countries today, even before accounting for heat pump efficiency.
Home Energy
Emissions = electricity × grid intensity + gas × 0.183 kg per kWh
Emissions = electricity × grid intensity + gas × 0.183 kg per kWh Gas has a fixed carbon intensity because it is combusted directly, while grid electricity improves each year as generation decarbonises. On a low-carbon grid, gas heating now emits more per kilowatt hour than electricity.
This crossover is why electrification of heating reduces emissions in most countries today, even before accounting for heat pump efficiency.
This calculator takes 5 inputs: Annual electricity use, Annual gas use, Electricity price per kWh, Gas price per kWh, Grid carbon intensity. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.