Home energy footprint
This home energy carbon calculator converts your electricity, natural gas, heating oil and LPG use into kilograms of CO2e using the UK government's DESNZ 2026 conversion factors. UK grid electricity is 0.13096 kgCO2e per kWh in the 2026 factor set — enter your annual kWh from a bill for the most accurate result.
TL;DR — Enter kWh and litres from your energy bills; we apply the official DESNZ 2026 factor for each fuel — UK electricity is 0.13096 kgCO2e/kWh — and total your household footprint.
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Running total: 0.00 tCO2e
Your home's energy
Annual usage from your bills — estimates are fine.
Electricity
Annual kWh
kWh
Natural gas
Annual kWh
kWh
Heating oil
Annual litres
litres
LPG
Annual litres
litres
How is it calculated?
- Electricity: DESNZ 2026 UK grid average, 0.13096 kgCO2e per kWh.
- Natural gas: DESNZ 2026 factor per kWh (gross CV) — read it straight off your bill.
- Heating oil (burning oil) and LPG: DESNZ 2026 factors per litre.
- Fuels are not interconvertible: each is entered in its own billing unit.
Every calculation runs server-side against a versioned official factor set and records the factor behind each line — see our methodology.
Frequently asked questions
- What is the carbon footprint of UK electricity per kWh?
- 0.13096 kgCO2e per kWh in the DESNZ 2026 conversion factors (generation, UK grid average). The grid factor falls most years as renewable generation grows.
- Should I use kWh from my bill or an estimate?
- A bill figure is best. If you don't have one, UK averages are roughly 2,700 kWh of electricity and 11,500 kWh of gas per household per year — but your own meter readings will be far more accurate.