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We made excellent progress in the last two years, reducing carbon per £million of revenue by 14.9%, far exceeding our two-year target of 5%.


Absolute tonnes CO2 diagram


Our approach to measuring carbon was developed in accordance with the Greenhouse Gas Protocol (“GHG Protocol”). Emissions are calculated using DEFRA and IEA carbon factors and are reported as tonnes of CO2 equivalent (abbreviated as tCO2e), based on the Global Warming Potential (“GWP”) of each of the “basket of six” greenhouse gases, as defined by the Kyoto Protocol.

Inaccuracies identified in prior year numbers resulted in immaterial adjustments to the 2013/14 and 2014/15 carbon and waste data.

Due to rounding of the figures in the bar charts, there is not always a precise correlation with the accurate total carbon figures.

Carbon emissions and waste

Wolseley’s reported data includes all fully owned distribution businesses and the Wolseley plc, DT Group and Wolseley Group Services head quarter locations.  The businesses and locations from which environmental data is collected represent 99.4% of Wolseley Group’s total employee numbers.  There are a few sourcing offices or registered addresses that are not included in the reporting boundary (less than 100 FTEs (Full Time Equivalent employees) in total at the start of the 2015/16 reporting period).  For further information, see the Basis of Reporting document for which there is a link on the right hand side of this page.

All Scope 1 and 2 emissions and selected Scope 3 emissions are reported. Scope 1 emissions include vehicle fuel emissions (from owned or leased vehicles) and fuels used for operation including natural gas, LPG, diesel, petrol, oil and refrigerants. Scope 2 emissions include purchased electricity and heat (i.e. district heating). Scope 3 emissions include the road or rail-based transportation of goods by outsourced transport providers, road-based business travel in private vehicles and air and rail-based business travel.

tCO₂e/£m revenue
Carbon emissions 2013/14 2014/15 2015/16 Two-year Variance
Scope 1 & 2 emissions 27.3 24.1 23.1 -15.4%
Scope 3 emissions 8.3 6.9 7.2 -13.3%
Total emissions 35.6 31.0 30.3 -14.9%

As a Group, the biggest contributors to carbon emissions are vehicle fuel, including both commercial vehicle and company cars, owned and outsourced fleets, and electricity. Each business has targets to reduce carbon from transport and carbon from buildings and equipment so that these contributors to our carbon footprint are further reduced.

The improved emissions performance for the Group over the last two years was supported by a number of initiatives including the fitting of tracking devices to trucks in the UK and the continued upgrade of company owned or leased fleet.  Low-energy lighting has been installed in further sites across the US, Canada and the UK.  Other initiatives include heating system upgrades and switching from diesel to electric forklift trucks.

Data accuracy

Data accuracy continues to improve.  12.5% of carbon data was estimated in FY16, compared to 15.4% in FY14.  PricewaterhouseCoopers LLP (“PwC”) were engaged to test the Group’s carbon data. They have provided a limited assurance report for 2015/16 total carbon emissions and carbon per million of revenue.  The specific data points covered by the assurance are marked with an A symbol either on this page or on the Environment efficiency page

Case studies