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.

What is gram CO2e?

Gram of CO2 equivalent (g CO2e) is a small-scale carbon emissions unit. It is used to express the carbon footprint of individual products, food items, and short journeys where emissions are minimal.

Worked examples

1 watt hour CO2e equivalent = 0.385 gram CO2e

1 gram CO2e = 0.001 kilogram CO2e

More Carbon Emissions conversions

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