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All 50 US states
Home Carbon Footprint Calculator — Energy & Transport
Calculate your household's annual carbon footprint from electricity, gas heating and driving. See how solar panels, an EV and a heat pump would reduce your CO2 emissions.
✓ Updated June 2026
✓ EIA & NREL data
✓ 30% federal ITC included
40–50k lbs/yr
US household
50–80%
Reduction potential
Transport
Biggest source
Estimate scope & data quality
This tool provides an input-driven estimate. Use the required inputs shown above and review the result limitations below.
- Data quality
- NOT_AVAILABLE
- Result limitation
- Calculator output is not a source-complete customer result.
A tariff credit is distinct from annual savings. If a result is NOT_COMPUTABLE or CONFLICT, it must not be replaced with an estimate or treated as canonical.
How to use this calculator
- Enter your monthly electricity usage in kWh.
- Enter your annual natural gas usage in therms.
- Enter your annual driving miles and vehicle fuel efficiency.
- See your total annual CO2 emissions in tonnes.
- See the impact of switching to solar, an EV, and a heat pump.
Frequently asked questions
Direct answers for US homeowners.
The average US household emits about 7.5 tonnes of CO2 per year from home energy and driving combined. Electricity accounts for about 2 tonnes, natural gas heating 3 tonnes, and driving 2.5 tonnes.
A typical 7kW solar system offsets approximately 5-7 tonnes of CO2 per year — equivalent to planting 250-350 trees annually or taking a car off the road for a year.
Yes, in virtually every US state. Even on today's grid, EVs produce 50-70% less lifetime CO2 than gas cars. In states with high renewable energy (California, New York, Washington), EVs produce 80%+ less CO2.