Specific Standard Disclosures: Environment

G4-EN3 - Energy consumption within the organization 

G4-EN6 - Reduction of energy consumption

G4-EN15 - Direct greenhouse gas (GHG) emissions (Scope 1)

G4-EN16 - Energy indirect greenhouse gas (GHG) emissions (Scope 2)

G4-EN19 - Reduction of greenhouse gas (GHG) emissions

G4-EN5 - Energy intensity 

G4-EN18 - Greenhouse gas (GHG) emissions intensity

This year Interpublic has continued our journey of calculating GHG emissions by expanding our initial boundary to include offices in the United Kingdom.  This is in addition to our original boundary which included our largest offices in North America.  In North America we included all offices which are over 100,000 square feet and in the UK we included 90% of our leased facilities and 100% of our owned facilities. Our Scope 1 and Scope 2 calculations in North America were completed using Measurabl, the online sustainability data software, which aligns its carbon accounting algorithms to the WRI/WBCSD’s GHG Protocol, Revised Edition methodologies. To calculate carbon emissions, we use US EPA e-Grid emissions factors for buildings within the United States and national-level emissions factors for buildings outside the United States.

To calculate our UK emissions we were supplied with an annual emissions report by Green Element.  The calculations completed by Green Element are in accordance with the GHG Protocol using 2014 conversions factors for purchased electricity and gas. Where up to 3 months' worth of data was not available or accurate, the missing data was estimated using a monthly average for that supply.

The expanded boundary as of the end of 2015 included 29% of our worldwide headcount, and 27% of our worldwide square footage.

Below are the combined calculated Scope 1 and 2 emissions come solely from electricity usage and heating fuel:

 Scope 1: 

  • 2014:  1,059.8 MTCO2e 
  • 2015:  1,301.3 MTCO2e

Scope 2:

  • 2014:  13,025.2 MTCO2e
  • 2015:  14,101.0 MTCO2e

The 2014, and 2015 uncertainty numbers for Scope 1 is ~3% and the uncertainty for Scope 2 is ~12%.

Below is our Electricity and Fuel (Natural Gas) usage


  • 2014:  34,179 MWh
  • 2015:  36,763 MWh

Fuel (Natural Gas):

  • 2014:  5,784 MWh
  • 2015:  7,106 MWh

Energy Intensity

These numbers include electricity, and fuel (natural gas) as detailed above in our energy calculations, and use the number of full time employees as an intensity denominator.

  • Energy Per Employee 2014:  2.90 MWh per Employee 2015:  3.12 MWh per Employee
  • Energy Per Square Footage 2014:  .014 MWh per Sq Ft 2015:  .014 MWh per Sq Ft

GHG Emissions Intensity

These numbers include Scope 1 and Scope 2 emissions as detailed above in GHG Emissions numbers and use the number of full time employees as an intensity denominator.

GHG Emissions Per Employee 2014: 

1.02  MTCO2e per Employee 2015:  1.10  MTCO2e per Employee

GHG Emissions Per Square Footage 2015:

.005 MTCO2e per Sq Ft 2015:  .005 MTCO2e per Sq Ft