Bills

Electricity Carbon Footprint Calculator

Every kWh of electricity carries a carbon cost that depends on how your grid generates power. This calculator estimates your annual CO₂ footprint from electricity.

Your details

kWh
g/kWh

CO₂ per kWh on your grid. Coal-heavy ~700+, renewable ~100.

Results

Monthly CO₂
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Yearly CO₂
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Trees needed to offset / year
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Last updated June 30, 2026. Results update automatically as you type.

How it works

Monthly CO₂ (kg) = monthly kWh × grid intensity ÷ 1000. Yearly CO₂ = monthly × 12. Trees to offset = yearly CO₂ ÷ 21, since a mature tree absorbs roughly 21 kg of CO₂ per year. Lower your footprint by using less power or switching to a greener tariff.

Frequently asked questions

What grid intensity should I use?

It varies widely by country and even by hour. Coal-heavy grids exceed 700 g/kWh; grids rich in renewables or nuclear can be under 100. Your utility or national grid operator often publishes this figure.

How can I reduce my electricity carbon footprint?

Use less energy, shift use to times when the grid is greener, choose a renewable tariff, or generate your own power with solar.

Is the “trees” figure exact?

No — it is an illustrative comparison. Real tree absorption varies by species, age and climate. Treat it as a rough sense of scale.

These calculators provide general estimates for educational purposes only and are not financial advice. Real-world results depend on factors not captured here. Verify figures independently before making any purchase or financial decision.

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