Electricity consumption

During 2020 and 2021 we have implemented energy efficiency measures at a number of sites across multiple business units and geographies. Examples of measures taken at different sites include installing solar panels, LED lighting replacements, ESOS1 and ISO2 50001 surveys, metering and efficiency improvements in production processes, improvements in steam distribution and improvement to HVAC controls; and in the US, a partnership with the US Environmental Protection Agency’s ENERGY STAR® programme, which gives us access to resources, tools, and benchmarking across our industry peers. Furthermore, during 2021 we purchased 282,519 MWh (2020 173,502 MWh) of renewable energy attributes under the Renewable Energy Guarantees of Origin scheme for 26 sites in the UK. 
All businesses are developing plans for increasing renewable energy generation in line with our net zero roadmaps.

1. Energy Savings Opportunity Scheme
2. International Organization for Standardization


Activities to reduce waste are in place at business level to address the specific production and non-production waste streams of programmes and facilities. Business activities include reducing the amount of waste going to landfill via recycling, treatment and incineration  and adapting manufacturing techniques, for example, 3D printing (additive manufacturing) utilises more than 95% of the material used, minimising waste. 
Examples of initiative’s to reduce waste include removing single use plastics and diverting waste cured carbon fibre from landfill. We also announced the extension of our partnership with keep Scotland beautiful, investing £100,000 to roll out the third phase of the campaign to expand education and outreach programmes to tackle marine litter. During COP26 we showcased our ‘Go With The Flow Project’ which encouraged engineers to take part in a challenge to design and build a river cleaning vessel. We also took part in UK recycling week which encouraged employees to increase recycling both at home and in the workplace. In terms of hazardous waste there was a significant reduction largely driven by a decrease in waste produced in our US business.


Operationally, our environmental management system helps manage and minimise the water we use across our facilities and manufacturing processes and we protect and support the water ecosystems which our facilities and communities depend on. Some of our businesses set initiatives and targets to reduce water consumption annually as appropriate. Initiatives are specific to how businesses consume water operationally and incorporate stages of manufacture, for example, flooding of dry docks. 
At multiple sites, leak detection and repair programmes are ongoing with further investments planned for 2022. We continue to evaluate climate related scenarios across our global portfolio of sites to monitor for flooding and drought to ensure we manage the risk to our people and operations. 
Mains water consumption has increased by 11% compared to 2020 this is mainly due to an increase in water consumption at one of our US sites. Abstracted water volumes have increased compared to 2020 consumption due to three yearly fluctuations in production/operational activities at one of our UK locations. Without these variations abstracted water consumption remains in line with 2020. Single locations can have a significant effect on consumption and we continue to apply targets to measure, monitor, report and reduce consumption.
2021 Key environmental data chart


We are developing our understanding of how our facilities and operations impact our surrounding natural habitat. Operationally, significant aspects of biodiversity are addressed via our environmental management system which includes protecting natural habitats, conserving protected species and the management of invasive species in and around our sites. Our businesses have established a number of local initiatives to support their local ecosystems from installing bat roosts, removing invasive species, planting wildflowers to attract bees and cleaning up water courses.

We also undertake a full lifecycle environmental assessment for our ships and submarines, to identify any potential impact on the marine environment, and to minimise these as far as possible. Our sea trials activities undergo a full environmental impact assessment which looks at what needs to happen, where the trials will take place, and the time of year to minimise impact on marine flora and fauna and habitats.
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