Our carbon footprint

Solar panels

Our greenhouse gas (GHG) net emissions in 2017/18 totalled 3.4 million tonnes of CO2e.

Some highlights from our climate change work include:

  • Reducing our absolute carbon emissions by 26% since 2015/16 using the market-based method for calculating our electricity impacts, and 12% using the location-based method.
  • 100% of electricity purchased for the UK, Ireland, and Slovakia is renewable, supported by renewable energy certificates.

In May 2017, we announced the new science-based targets which are aligned with the Paris Climate Agreement recommendation of a 1.5 degree global warming trajectory. In 2017/18 we have made good progress on these:

Carbon emission reduction targets
Target Progress to date
Reduce absolute carbon emissions from our operations from 2015/16 levels: 35% by 2020, 60% by 2025 and 100% by 2050. 26% (using the market-based method)
Source 65% of our electricity from renewable sources by 2020 and 100% by 2030. 55% supported by renewable energy certificates

We measure and report our carbon emissions following the Greenhouse Gas Protocol. For more information about how we calculate our carbon footprint, including reporting standards, a more detailed definition of Scope 1, 2 and 3 emissions, and the current emission factors visit our carbon footprint methodology page.

2017/18 total carbon footprint (million tonnes CO2e)

2017/18 total carbon footprint (million tonnes CO2e)

GHG emissions data for period 25 February 2017 to 24 February 2018

GHG emissions data for period 23 February 2014 to 28 February 2015
  Global tonnes of CO2e
  2017/18 2016/17 Base year 2015/16
Scope 1 1,306,985* 1,236,980 1,301,746
Scope 2 (Market-based method) 1,136,325 * 1,582,275 2,004,992
Scope 2 (Location-based method) 2,077,528 * 2,357,245 2,528,323
Scope 1 and 2 carbon intensity (kg CO2e/sq. ft. of stores and DCs) 21.23 * 22.95 26.33
Scope 3 975,312 * 1,073,721  1,097,491
Emissions outside of scopes 55 - -
Total gross emissions 3,418,677* 3,892,977 4,404,230
CO2e from renewable energy exported to grid 1,134 * 1,154 1,513
Total net emissions 3,417,543* 3,891,822 4,402,717
Overall net carbon intensity (total net emissions kg CO2e/sq. ft. of stores and DCs) 29.70 * 31.69 35.06

UK Field-to-Tesco footprint

The graph below shows the estimated breakdown of our emissions from field to Tesco for our UK operations excluding emissions associated with land use change.

 Estimated breakdown of our emissions from field to Tesco for our UK operations excluding emissions associated with land use change

Comment from our independent assurance provider, KPMG LLP

KPMG LLP were engaged to provide independent limited assurance over the selected greenhouse gas emissions data highlighted in this report with a * using the assurance standards ISAE 3000 and 3410. KPMG has issued an unqualified opinion over the selected data. KPMG’s full assurance statement is available here.

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