An emission factor is a value used to estimate greenhouse gas emissions from activity data such as energy or fuel consumption.
What is an emission factor?
An emission factor converts activity data into an estimated greenhouse gas emission value. For example, electricity consumption can be multiplied by an electricity emission factor to estimate related carbon emissions.
Why emission factors matter
Emission factors are important because many organizations do not measure emissions directly. Instead, they calculate emissions based on energy use, fuel use, transport activity or other measurable data. The quality of carbon reporting depends on using appropriate factors and documenting assumptions.
Common activity data
Common inputs include electricity consumption, natural gas use, diesel consumption, gasoline consumption, LPG use, steam purchase, district heating, transport fuel and other operational data.
Good practice for emission factors
Teams should document the emission factor source, year, region, unit, calculation method and assumptions. They should also avoid mixing factors from different methodologies without explanation.
Carbon Ninja context
Carbon Ninja can help connect energy and water performance actions with estimated CO₂ impact, reduction opportunities and executive reporting outputs.
Practical examples
How this connects to Carbon Ninja
Carbon Ninja is designed to connect technical concepts with real workflows: data collection, indicators, baselines, measurements, opportunities, actions, responsibilities and reporting. This makes technical terms useful for daily performance management, not only documentation.