Hello Green Gurus! We are diving deep into our carbon metrics this year and are finalizing some of our emissions factors for our Scope 1 and 2 emissions and in a few more months Scope 3. I'm hoping this brain trust has some recent knowledge to share on this topic. What we've found is there's a fairly big variance in what we've seen in published emission factors. Does anyone have a database you'd recommend for emission factors? We are also in conversation with the EPA on their variety of databases to try and nail down our final numbers. Here's what we have so far;
Scope 1 - For the carbon emissions produced from our company owned vehicle, we have used greenhouse gas emissions (CO2) from www.fueleconomy.gov for specific type of vehicle. The fuel economy website includes grams per mile CO2 emissions factor for different vehicles type.
Scope 2 – For energy related emissions (Electricity), we have used EPA Egrid by subregion (https://www.epa.gov/egrid/data-explorer) CO2 emissions factor for purchased electricity from grid, PV generated electricity used by facility, and PV generated electricity supplied to grid. We have used CO2 emissions factor for natural gas for natural gas consumptio from the EPA Greenhouse Gas Equivlencies Calcualtor. There are several carbon emissions factors from several sources such as EPA AVERT tool, EGrid and EPA Greenhouse Gas Equivalencies Calculator, which tends to have fairly large differences in CO emissions factor. We are in conversation with EPA on this now.
Does anyone have other experiences/resources that you can share around emission factors?
