Performance, reports and data
Read our information on how we've performed over time in relation to our environmental targets.
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Summary of 2022
In 2019, we introduced a new approach to measuring and assessing our environmental performance, using the Sectoral Decarbonisation Approach (SDA) methodology to set ourselves a number of environmental targets, alongside more traditional environmental targets or key performance indicators (together, the KPIs). The SDA methodology is the only approach with transport sector-specific metrics, using climate science to enable organisations to set targets relevant to their industry. We set new SDA KPIs on traction energy usage, traction carbon emissions and total (Scope 1 & 2) carbon emissions, which at the time met the 2018 Intergovernmental Panel on Climate Change (IPCC) goal of controlling the increase in global warming to below 2°C. The SDA KPIs were set over an initial seven-year performance period – 2019 to 2025 – from a 2018 baseline. We supplemented these SDA targets with KPIs on site emissions, waste to landfill and water usage, which we also aim to achieve over the same seven-year performance period against a 2018 baseline.
Our intention is to review the SDA KPIs on a regular basis as climate science, technology and forecasting methods improve, and we intend to refresh our KPIs in 2023, using 2022 as the baseline year and aligned to the ambition of the Paris agreement to control the increase in global warming to below 1.5°C. These targets have a purpose to aid our commitment to an overarching goal of achieving net zero (Scope 1 & 2 emissions) across the Group by 2040.
Reduction target information (metric) Base year (2018) 2025 Target 2021 2022 Change from base year Change
2021-2022Required to meet target Traction energy: (vehicle fuel and electricity) per m pass km MWh / m pass km 66.92 58.72 86.19 83.82 25.3% (2.7%) (29.9)% Traction Carbon Emissions (Scope 1 & 2) tCO2e / m pass km 17.67 15.45 24.15 23.38 32.3% (3.2%) (33.9)% Total Scope 1 & 2 Emissions tCO2e / m pass km 19.26 16.45 25.34 24.17 25.5% (4.3%) (31.9)% Site Scope 1 & 2 Emissions (building use only) (tCO2e) 41,656 38,199 31,683 29,839 (28.4)% (5.8)% Met Landfilled Waste Disposal – tonnes 7,711 5,783 4,491 4,215 (45.3)% (6.1)% Met Water Consumption – m3 478,956 439,208 424,347 429,170 (10.4)% 1.1% Met The performance against KPI intensity targets in 2022 was still impacted by Covid-19, with disruption caused by the Omicron variant in the early part of the year affecting discretionary travel. This had the effect of reducing the environmental efficiency relative to normalised operation. The year began, therefore, with Covid-19 continuing to have a significant impact on our intensity metrics.
Over the full year, the 2022 traction metrics have all improved on the 2021 result as patronage improved over the year. Whilst we remain behind our 2025 targets on all three traction metrics, we are seeing the start of a positive impact of ZEV transition, mostly in the UK, and expect this to continue as we roll out the ZEV transition in future years and therefore there remains potential for material improvement in intensity metrics as this progresses.
There was a good performance on absolute site emissions and landfill waste disposal in the year, with a 5.8% and 6.1% respective reduction year on year. Whilst water consumption slightly increased on 2021 levels, this was a good result given both the service curtailments and low office occupancy levels in 2021 reduced water usage significantly, e.g. from vehicle cleaning.
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Absolute emissions
tCO2e emissions by scope 2019 2020 2021 2022 Change
(2021 vs. 2022)Scope 1 823,582 514,106 657,239 830.287 26.3% Scope 2 49,938 67,879 73,649 83,577 8.5% Scope 3 8,221 8,641 5,762 600,000* N/A* Total 881,741 590,545 736,650 1,514,264 N/A* *Scope 3 absolute emissions has increased significantly year on year due to the Group completing a full baseline assessment of Group-wide Scope 3 emissions during the year and including all relevant categories in the 2022 numbers. Prior year scope 3 included only business travel, waste, water and certain other upstream emissions, hence no year on year % change has been disclosed as they are not comparable. Please refer to the below for the detailed methodology and breakdown of Scope 3 emissions by category.
tCO2e emissions by division 2019 2020 2021 2022 % change YOY (2021-2022) ALSA 324,007 324,007 234,477 712,900 N/A%* Bahrain 22,833 20,214 20,214 23,946 N/A%* Germany 29,269 52,347 52,347 122,486 N/A%* United Kingdom 227,380 142,769 140,168 288.524 N/A%* USA and Canada 276,693 140,168 142,769 362,514 N/A%* Central functions 1,559 569 598 3,894 N/A%* Group Total 881,741 590,545 590,545 1,514.264 N/A%* *Scope 3 absolute emissions has increased significantly year on year due to the Group completing a full baseline assessment of Group-wide Scope 3 emissions during the year and including all relevant categories in the 2022 numbers. Prior year scope 3 included only business travel, waste, water and certain other upstream emissions, hence no year on year % change has been disclosed as they are not comparable. Please refer to the below for the detailed methodology and breakdown of Scope 3 emissions by category.
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Streamlined Energy and Carbon Reporting
MWh by Division 2021 2022 ALSA 1,325,774 1,566,970 USA and Canada 515,191 815,442 United Kingdon 489,515 622,607 Germany 137,700 196,221 Bahrain 54,950 56,081 Total 2,523,130 3,257,319 Energy consumed from activities for which the company is responsible, including the combustion of fuel and the operation of any facility 2,333,066 3,012,926 Energy consumed resulting from the purchase of electricity, heat, steam or cooling 190,064 244,394 All 2,523,130 3,257,319 Proportion of that figure relates to energy consumed in the UK and offshore area 2021 2022 Offshore 2,033,615 2,634,714 United Kingdom 489,515 622,606 UK proportion 19% 24% This is another way of stating existing disclosures (as it is simply stating the same information in different measurement units) so the drivers of movement in tCO2 and kWh for the Group should be broadly the same. The fact that, measured in MWh, emissions are up 29% year-on-year whereas measured in tCO2 they are up 25% is driven by a combination of definitions, measurement standards and changes in energy ‘mix’.