This data covers the year ended 31 December 2013 in line with the Group’s financial reporting period.
CO2e emissions breakdown (in tonnes)
| Emission source
|Scope 1||Natural gas combustion||8,757||7,584||7,486||7,666||1,946|
|Heating oil combustion||2,548||2,256||2,228||2,301||682|
|Total scope 1 emissions||11,305||9,840||9,714||9,967||2,628|
|Scope 2||Total purchased electricity at grid average intensity (gross)||157,471||164,212||152,968||149,055||149,728|
|Less purchases of renewable electricity (see note 6)||(21,299)||(23,765)||(22,572)||(23,028)||–|
|Total scope 2 emissions (net)||136,172||140,447||130,396||126,027||149,728|
|Scope 3||Business air travel||95,879||96,079||100,960||86,340||81,714|
|Other estimated scope 3 emissions (see note 4)||36,503||36,955||36,161||33,350||35,111|
|Total scope 3 emissions||132,382||133,034||137,121||119,690||116,825|
|Total CO2e emissions (net)||279,859||283,321||277,231||255,684||269,181|
|Total CO2e emissions (gross)||301,158||307,086||299,803||278,712||269,181|
WPP's carbon intensity (in tonnes of CO2e)
|Tonnes per employee (net)||2.35||2.45||2.44||2.46||3.39|
|Percentage change from 2006||-31%||-28%||-28%||-27%||–|
|Tonnes per £m of revenue (net)||25.40||27.31||27.66||27.40||45.56|
|Percentage change from 2006||-44%||-40%||-39%||-40%||–|
Office energy use (in megawatt hours)
|Direct energy use (natural gas and heating oil)||52,532||45,673||45,090||46,244||12,099|
|Indirect energy use (purchased electricity)||328,374||323,582||307,245||303,456||295,396|
|Total energy use||380,906||369,255||352,335||349,700||307,495|
|% of electricity from renewable sources||15%||16%||16%||16%||0%|
Notes to WPP’s carbon emissions statement 2013
- Reporting standard
Our carbon emissions statement 2013 has been prepared in accordance with the World Resource Institute (WRI) and World Business Council for Sustainable Development (WBCSD) Greenhouse Gas Protocol: A Corporate Accounting and Reporting Standard, Revised Edition (the GHG Protocol).
- Greenhouse gases
All greenhouse gases emissions figures are in metric tonnes of carbon dioxide equivalents (CO2e). They include three of the six greenhouse gases covered by the Kyoto Protocol – carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). Perfluorocarbons (PFCs), hydrofluorocarbons (HFCs) and sulphur hexafluoride (SF6) emissions have been omitted from our reporting as they are not a material source of greenhouse gases for WPP.
- Organisational boundary
Emissions data is included for all operations for which WPP and its subsidiaries have operational control. This covers 119,116 employees. Associate companies are excluded.
- Operational boundary
We include the following emissions in our reporting:
- Direct emissions (scope 1):
- Fuel used to heat WPP premises (combustion of natural gas and heating oil).
- Indirect emissions (scope 2):
- All purchased electricity, including electricity purchased at grid average carbon intensity and renewable electricity purchased under specific green-tariff contracts.
- Other indirect emissions (scope 3):
- Employee business air travel.
- An estimate for other scope 3 emissions that we do not currently measure, including emissions from leased cars, taxis and couriers. This estimate is an additional 15% that we add to our carbon footprint and is shown under ‘other estimated scope 3 emissions’.
- Direct emissions (scope 1):
- Geographic scope
Our CO2e emissions data covers our worldwide operations.
- Emission factors
CO2e emissions have been calculated on the basis of measured or estimated energy use, fuel use and miles travelled, multiplied by the relevant carbon emission factors. In 2013, we updated our emission factors for scope 1, scope 2 and scope 3 emissions, and our data is based on the following emissions factors:
|Emission scope||Emission factors used|
| Scope 1
(fuel used to heat WPP premises)
|IPCC 2006 Guidelines for National Greenhouse Gas Inventories (using global warming potentials from the 2007 IPCC Fourth Assessment Report).|
| Scope 2
|International Energy Agency, CO2 Emissions from Fuel Combustion, 2013 edition.|
| Scope 3
(business air travel)
|UK Department for Environment, Food & Rural Affairs (Defra), Conversion Factors for Company Reporting (2013).|
When calculating our carbon footprint, we rate purchased renewable electricity as zero emissions. For full transparency, we also disclose total electricity purchased at grid average carbon intensity.
- Data collection methodology
Data used to calculate CO2e emissions is collected quarterly through WPP’s financial reporting system, and includes some estimated data (e.g. in some locations electricity usage is estimated based on headcount or floor space). In 2013, our data covered 99% of our operations by employee headcount. The remaining 1% was extrapolated based on the Group’s total headcount at year-end.
- External assurance
Our carbon data is reviewed by Bureau Veritas, an independent assurance provider. Following its review of our 2012 data, Bureau Veritas made a number of recommendations for improving our approach. We have implemented many of these in our 2013 reporting process. This includes updating our reporting guidelines and issuing a reporting tool to help our companies use data during the year to manage performance. See the assurance statement.
Chapter 5 of 10