Emissions factors version information

Emissions factors are released each year as versions. Each year's version includes the most up to date emissions factors available. You can select which version you would like to use on the 'Data Mgmt' tab. And remember, Tier 1 users can always customize their emissions factors on the 'Data Entry' tab.

Version 2017 2018 Coming soon - 2019 version
Date released November 2017 April 2019 To be released in summer/fall 2019
 Scope 1
Stationary combustion On-campus stationary changes, new NOx emissions factors Unchanged from 2017 version Biogenic emissions (e.g. biomass) are tracked separately from  CO2
Transport fuels Unchanged from CCC, new NOx emissions factors Unchanged from 2017 version CH4 and N2O update for gasoline and diesel vehicles
      Biogenic emissions (e.g., biofuels) are tracked separately from CO2
Fertilizer Unchanged from CCC and NFT Unchanged from 2017 version No planned changes
Animals Unchanged from CCC, n/a for NFT Unchanged from 2017 version No planned changes
Refrigerants & chemicals Unchanged from CCC, n/a for NFT Unchanged from 2017 version No planned changes
 Scope 2
Utility consumption  eGrid 2016 report (factors updated through 2014), Custom fuel mix changes from CCC eGrid 2018 report (factors updated through 2016) TBD, pending the release of a new eGrid report
   Residuals for CO2 for 2015-2017 Residual emission factors for CO2 added for 2018 TBD, pending the release of new factors
 Scope 3
Commuting Unchanged from CCC, new NOx emissions factors Unchanged from 2017 version CH4 and N2O update for gasoline and diesel vehicles
Business travel & study abroad Air travel CO2, new NOx emissions factors Unchanged from 2017 version CH4 and N2O update for gasoline and diesel vehicles
Student travel to/from home Air travel CO2, new NOx emissions factors Unchanged from 2017 version CH4 and N2O update for gasoline and diesel vehicles
Food New to SIMAP with GHG emissions factors. Unchanged from NFT Unchanged from 2017 version No planned changes
Paper Unchanged from CCC. N/A for NFT Unchanged from 2017 version No planned changes
Waste & wastewater Unchanged from CCC, new nitrogen loss factors Unchanged from 2017 version No planned changes
 Sinks and offsets
Compost Unchanged from CCC. Nitrogen update for average compost N content Unchanged from 2017 version No planned changes
Non-additional sequestration Unchanged from CCC, new for nitrogen Unchanged from 2017 version No planned changes
Offsets Unchanged from CCC, new for nitrogen Unchanged from 2017 version No planned changes

Note: This table is specific to US emissions factors. The Canadian electricity emissions factors (regional and residuals) were also updated in the 2017 and 2018 versions.

 

CCC = Campus Carbon Calculator, which was the Excel version of the campus carbon footprint tool

NFT = Nitrogen Footprint Tool, which was the original Excel version of the campus nitrogen footprint tool