Electricity CO₂ Emissions Calculator
Carbon dioxide from electricity use, with comparisons to trees and car kilometres.
Results
CO₂ emissions
5.7500
t
CO₂ emissions
5750.0
kg
Equivalent mature trees per year
274
Distance
47,917
km
The dashed line marks the value you entered.
What this tool does
The emission factor depends entirely on where your electricity comes from, and it changes year by year — take it from your supplier or your national grid operator rather than a general figure. The comparisons are rough illustrations, based on roughly 21 kg of CO₂ absorbed per mature tree per year and 120 g per car kilometre.
Formula
CO₂ = energy × emission factor
Variables
| Symbol | Meaning | Unit |
|---|---|---|
ek | Energy consumed | kWh |
ef | Emission factor | g/kWh |
T | CO₂ emissions | t |
K | CO₂ emissions | kg |
TR | Equivalent mature trees per year | — |
KM | Distance | km |
Worked example
- Energy consumed25,000 kWh
- Emission factor230 g/kWh
- CO₂ emissions5.7500 t
- CO₂ emissions5750.0 kg
- Equivalent mature trees per year274
- Distance47,917 km
Limitations
- The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.
- For work that must comply with a standard or be signed off, check the result against the applicable code and have it reviewed by a qualified engineer.
- The default values are typical reference figures, not measurements of your situation. Replace them with your own data whenever you have it.