What is tonne CO2e?

Tonne of CO2 equivalent (t CO2e) is the standard large-scale unit for national and industrial carbon accounting. It is used in emissions trading schemes, sustainability reports, and international climate agreements.

What is watt hour CO2e equivalent?

Watt hour CO2 equivalent is a carbon emissions unit expressing the greenhouse gas equivalent of producing one watt hour of electricity. It is used in energy labelling, lifecycle assessments, and grid carbon intensity calculations.

Worked examples

1 tonne CO2e = 2,597,402.5974026 watt hour CO2e equivalent

1 watt hour CO2e equivalent = 0.000385 kilogram CO2e

More Carbon Emissions conversions

• Convert tonne CO2e to kilogram CO2e
• Convert tonne CO2e to gram CO2e
• Convert tonne CO2e to watt hour CO2e equivalent
• Convert tonne CO2e to kilowatt hour CO2e equivalent
• Convert tonne CO2e to megawatt hour CO2e equivalent

Assumption: electricity-to-CO2 uses 0.385 kg CO2e per kWh (≈2597 Wh per kg CO2e). Actual factors vary by country, grid mix, and year.