The Definitive Emission Factor Database

If you're managing sustainability assessments in spreadsheets, is a vital productivity tool. Register for free and get instant access to the most comprehensive database of current and historical emission factors in the world.

Powerful Search

Perform simple or advanced searches by factor or activity, and get factors for all greenhouse gases broken down by unit.

Bookmark and Download Factors

Bookmark searched factors for easy future reference and export them to a spreadsheet to use in your offline assessments.

Increase Accuracy

Frequent updates by our analyst team means our emission factors are always accurate, so your reports will be too.

Pass that Audit

Comprehensive search results give you a complete audit trail with data provided by experts that you can trust.