Carbon Offset Calculator
Discover the environmental impact of your solar panel system. See how much CO2 you can offset and what it means in real-world terms.
System Details
Your Environmental Impact
Based on eGRID 2023 emissions factors for your location.
Impact Breakdown
Annual CO2 Offset
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tons / year
Trees Equivalent
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trees planted per year
Cars Equivalent
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cars removed per year
Homes Powered
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homes / year equivalent
Environmental Value
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per year (social cost of carbon)
25-Year CO2 Offset
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tons
Did You Know?
The average US home produces about 7.5 tons of CO2 per year from total energy use (electricity, heating, and transportation).
Solar panels have a 25–30 year lifespan and continue producing clean energy well beyond their warranty.
The US social cost of carbon is estimated at $190/ton, meaning every ton of CO2 avoided saves society $190 in health and environmental costs.
See Your Financial Return Too
Calculate the financial return on your solar investment with our ROI Calculator, including payback period and 25-year savings.
Open System Size CalculatorEnter your solar system size above. Results calculate automatically, or click "Calculate Impact".
Estimates use state-specific grid emission factors (eGRID 2023, lbs CO₂/kWh) and peak sun hours (NREL annual averages). Select your state for a localized estimate, or "National Average" for U.S. mean values (~5 peak sun hours/day, 0.771 lbs CO₂/kWh). All figures use an 85% performance ratio and are planning-grade approximations, not regulatory values. Social cost of carbon based on EPA's 2023 estimates at $190/ton (2% discount rate, central value).