Our carbon footprint and energy use

WPP’s carbon footprint

      CO2 emissions (tonnes)
  2006 2007 2008 2008
  (renewable energy
rated zero emissions)
Office energy use 144,354 120,032 112,901 94,376
Air travel1 81,733 92,269 89,500 89,500
Other (includes unmet
impacts e.g. couriers
and taxis) 33,913 31,845 30,360 27,581
Total 260,000 244,146 232,761 211,457
Air travel data partially estimated.

WPP’s office energy use (megawatt hours)

  2006 2007 2008
Energy use 297,406 251,685 223,720

In 2008, we emitted 232,761 tonnes of CO2, a 10.5% reduction on our 2006 baseline level. Our main climate impact is from consumption of electricity and gas in our 2,400 offices and employee air travel. We add an additional 15% to our CO2 footprint to account for unmeasured impacts, such as couriers and taxis.

In 2008, we used 223,720 megawatt hours of energy in our offices which resulted in emissions of 112,901 tonnes of CO2, a 22% reduction on our 2006 baseline. This was achieved despite a 14.5% increase in our property portfolio by floor space since 2006. We estimate that we have saved over £6 million through reductions in office energy use between 2006 and 2008. The above emissions calculations follow new UK government guidelines, which state that emissions from renewable energy should be calculated using the same conversion factors as conventional grid energy, rather than rated as zero emissions. If the renewable energy we purchase is rated as zero emissions, we have reduced CO2 emissions from energy use by 35% since 2006.

We collect our air travel data via an external provider, as part of our airline procurement process. We have detailed analysis covering our major cities relating to approximately 70% of our journeys. The balance we estimate based on internal records.

In 2008, we offset 195,000 tonnes of CO2 through support for renewable energy projects.

We report our greenhouse gas emissions to the Carbon Disclosure Project (CDP), a collaboration of institutional investors and participate in the CDP’s Supply Chain Leadership Collaboration.