Costain Group PLC, commonly known as Costain, is a leading UK-based construction and engineering company headquartered in GB. Founded in 1865, Costain has established itself as a key player in the construction work industry, particularly in sectors such as infrastructure, energy, and water management.
With a strong operational presence across the UK, Costain offers a diverse range of services, including project management, engineering, and consultancy. The company is renowned for its innovative approach to sustainable construction, leveraging advanced technologies to enhance efficiency and reduce environmental impact.
Recognised for its commitment to quality and safety, Costain has achieved numerous accolades, solidifying its position as a trusted partner in major infrastructure projects. Its dedication to delivering value and excellence continues to drive its success in the competitive construction landscape.
+37 vs industry average
Costain’s score of 63 is higher than 77% of the industry. This can give you a sense of how well the company is doing compared to its peers.
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Industry Intensity
Construction Work has above-average carbon intensity
Industry performance
The Construction Work industry has reduced its overall emissions by 33% since 2019
Emissions trajectory 2020 – 2027
Reported emissions
Scope 3 accounts for ••• of total emissions.
Costain's reported carbon emissions
Costain, a construction work company based in the UK, has reported its carbon emissions for several years, with the most recent data available for 2024. In 2024, Costain's total reported emissions were approximately 278.2 million kg CO2e. This figure is comprised of Scope 1 emissions totalling around 4.8 million kg CO2e, Scope 2 emissions at approximately 0.9 million kg CO2e, and Scope 3 emissions amounting to roughly 272.6 million kg CO2e. For the preceding year, 2023, total emissions were approximately 281.4 million kg CO2e, including Scope 1 emissions of about 4.9 million kg CO2e, Scope 2 emissions of around 1.3 million kg CO2e, and Scope 3 emissions of approximately 275.2 million kg CO2e. In 2022, total emissions were around 320.7 million kg CO2e, with Scope 1 emissions at approximately 6.4 million kg CO2e, Scope 2 at around 1.0 million kg CO2e, and Scope 3 at approximately 313.3 million kg CO2e. Costain has established several climate commitments. The company aims to achieve net zero for its Scope 1 and 2 emissions by 2035. Furthermore, Costain has set Science Based Targets (SBTi) aligned with a 1.5°C pathway. This includes a near-term commitment to reduce absolute Scope 1 and 2 greenhouse gas (GHG) emissions by 42% by 2030, using a 2021 base year. They also commit to reducing absolute Scope 3 GHG emissions by 42% within the same timeframe. Long-term, Costain aims to reduce absolute Scope 1 and 2 GHG emissions by 90% by 2050 from the 2021 baseline, with a corresponding 90% reduction in absolute Scope 3 GHG emissions. The company also aims for an overall net-zero target across its value chain by 2050. Initiatives to achieve these goals have been put in place to reduce CO2 emissions by approximately 40% by 2025.
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Costain’s Climate Goals (2030 & 2050)
No climate goals have been disclosed for Costain yet.
Scope 3 top emissions categories
8 of 15 categories disclosedSee all scope 3 categories
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Climate initiatives

Science Based Targets Initiative

Carbon Disclosure Project
The Climate Pledge
UN Global Compact Climate Champions initiative
RE 100
Climate Action 100
Emissions comparison with industry peers
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Common questions about Costain’s sustainability data and climate commitments
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