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