A Green House Gases (GHG) emission inventory or Carbon Footprint – is the quantity of CO2 and other GHGs (CH4, N2O, HFCs, PFCs & SF6) emitted from a facility (either directly or indirectly) on an annual basis. Larger companies such as Walmart and others are requiring their customers to complete a carbon footprint.  For larger companies, EPA is requires the reporting of direct GHG emissions from certain industrial facilities

What IES will do

IES environmental engineers will visit your facility to complete the GHG inventory by taking natural gas and electrical usage data and calculating the corresponding GHG emissions as shown below:

  • Scope 1 determines direct emissions from combustion sources (boilers) or refrigerant leaks. Company owned vehicles are also included in Scope 1 assessments.
  • Scope 2 includes indirect GHG emissions such as those associated with electrical use or importing process steam from other facilities.
  • Scope 3 includes GHG emissions from sources such as product transport, raw materials, product usage and disposal, employee commuting and other activities (typically scope 3 is not included in the GHG inventory).

NOTE:  IES now has the capability to calculate the Scope 3 GHG emissions by completing a complete GHG Life Cycle Analysis (LCA).  This includes energy related emissions associated with material acquisition (mining, etc), manufacturing, transportation, product use and product disposal. Although currently viewed as optional, Scope 3 GHG emissions maybe become required in the near future


Information is typically reported in units of CO2 equivalents (CO2e). The report format will be structured so that data can be directly uploaded into the GHG registry – of choice (CDP, Climate Registry, etc)


What happens with the results?

Based on your calculated GHG levels, an IES specialist can also assist you in developing CO2 reduction goals and the corresponding action plans or projects that will help meet those goals

Learn how to reduce your Carbon Footprint! Contact us today.