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PAS 2080

Is this the specification that saves the world?

The specification that saves the world? We know it’s a bold claim.

However, according to the ‘Infrastructure for climate action’ report by the UN Environment Programme, the built environment is responsible for 79% of the world’s greenhouse gas emissions.

We cannot state this clearly enough: without immediate course correction on carbon emissions, the world faces catastrophic consequences.

If we are to succeed in limiting global warming to 1.5°C and avoid the worst impacts of climate change, the sector needs to rapidly transform how it delivers and operates buildings and infrastructure.

PAS 2080 is how we do this.

What is PAS 2080?

PAS 2080 is a management specification that, with its guidance document, provides step-by-step guidance on how to reduce whole-life carbon emissions. It is published by BSI, the international standards and certification body.

PAS 2080 explains how to integrate carbon into decision making and procurement from project inception through to end-of-life, enabling the decarbonisation of assets, networks and systems. It makes clear that the greatest opportunity for carbon reduction is in the earliest stages of the project lifecycle when questions can be asked about what to build, how to build and, indeed, whether to build it at all.

PAS 2080 can be used by organisations across the whole built environment value chain, no matter where they are on their carbon reduction journey – whether not yet started or advanced. It sets out the roles and responsibilities of every organisation at every stage in the project lifecycle, providing a common framework and language for decarbonisation.

Register here to receive the latest insights from our carbon management experts as well as invitations to webinars and Q&A clinics on what PAS 2080 means for you and your organisation.

Why get PAS 2080 accreditation?

We recognise that some organisations may not be ready for full PAS 2080 accreditation and wish to pursue a more staged approach to building carbon capability in the short term. By investing in improving carbon management capability in a limited number of PAS 2080 components, those organisations will see major benefits and pave the way for full accreditation.

PAS 2080 can help you to:

  • Operationalise your net-zero roadmap. Many businesses and organisations across the built environment have set out their net-zero strategies and road maps on scope 1, 2 and 3 emissions. PAS 2080 is how these ambitions will be realised, setting a clear delivery framework across the whole value chain.
  • Position to win work. Major client organisations are already moving on PAS 2080 in the UK. The Department for Transport, for example, has set 2025 as the deadline for its arm's length bodies to be PAS 2080 accredited and National Highways has already set that requirement for its entire supply chain.
  • Reassure investors that you are aligned with net zero. Demonstrating your carbon management capability helps attract greater investment opportunities and avoids divestment due to stranded assets.

Download the PAS 2080 specification here.

Download the guidance document for PAS 2080 here.

What can we do for you?

Mott MacDonald has been at the heart of PAS 2080 from the very beginning, co-authoring the specification in 2016 and its update in April 2023.

As the first consultant to be PAS 2080 accredited, we know what it takes and support our clients worldwide in improving their carbon management maturity and achieving accreditation for themselves.

We can help you to:

  • Achieve PAS 2080 accreditation. We can walk you through the accreditation process or conduct gap analysis to find out what the missing links are through our PAS 2080 health check.
  • Measure and monitor carbon. We can implement processes and analyse your data to ensure carbon is baked into your decision making at every level. We can help you develop your net-zero strategy, incentivise your supply chain and upskill teams to improve carbon literacy across your organisation.
  • Design for low carbon, all the time. We will bring our in-depth knowledge of PAS 2080 to bear on low-carbon design and specification during scheme design and detail design stage phases.
  • Manage your supply chain. Using PAS 2080, our procurement teams can help you address your supply chain’s carbon footprint and reduce scope three emissions.
  • Analyse whole-life carbon data. Our Moata Carbon Portal is an intuitive digital solution that calculates the carbon emissions of infrastructure at any stage of the project, allowing you to assess and reduce the carbon impact of infrastructure from the earliest possible stages of a project to the end of its life. Aligned with PAS 2080, it is designed to be used by non-experts and experts alike.


Maria Manidaki
Technical principal: carbon net zero, water consultancy division

Damien Canning
Technical specialist, highways and intelligent transport systems


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