LETI is a network of over 1,000 built environment professionals, working together to put the UK on the path to a zero carbon future. The voluntary group is made up of developers, engineers, housing associations, architects, planners, academics, sustainability professionals, contractors and facilities managers.

News

25.10.22  LETI ADAPTS NAME TO REFLECT RELEVANCE ACROSS UK

Since its inception in 2017, LETI has rapidly grown from a small-scale London-based group to over 1000 built environment professionals across the UK, providing consensus-based guidance for the construction industry. As LETI expands and engagement increases across the UK, we recognise the importance of emphasising our UK-wide relevance. Discover more about LETI's transition from away from its previous name, becoming a Community Interest Company and joining the SDF Alliance.

→  Learn more

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25.05.22  UK Net Zero Carbon Building Standard

LETI are excited to be part of a cross-industry group developing the UK’s first Net Zero Carbon Buildings Standard. If you missed the project launch event, you can now catch up on the webinar recording and download the presentation slides to find out more about how you and your company can get involved:

→  UK Net Zero Buildings Standard: Get involved

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26.04.22  LETI launches Circular Economy 1-Pager

LETI's one page summary from the Circular Economy Workstream provides a definition and explanation of what circularity in a built environment context comprises, a circular strategies hierarchy, primary actions for the built environment industry to prioritise, and suggests key circularity metrics for professionals to test. The summary also references the relationship between circularity and whole life carbon reductions which requires further attention.

→  Download Circular Economy 1-pager

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14.03.22  What does Net-Zero mean? Launch of CIBSE-LETI FAQs

The Net-Zero FAQs build on the work of the Whole Life Carbon Network/ LETI definitions, with simple explanations on the implementation of Net-Zero in practice and in detail. It is an exciting new resource developed jointly by CIBSE and LETI, and supported by others in the industry including the RIBA. These FAQs have been developed since the industry consultation that we ran in November 2021 - thanks again to those of you that took part. Get your questions ready and join us for the official online launch of the CIBSE-LETI FAQs on Thursday 7th April at 16:00.

→  CIBSE-LETI Net-Zero FAQs launch

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16.12.21  LETI Opinion Pieces

We are launching a new type of publication, the LETI Opinion Piece, a discussion document on a specific topic that presents a point of view in time and hasn’t necessarily been through the full LETI peer review process. LETI’s first Opinion Piece looks at how circular economy and carbon in construction are linked. It shines a light on the interconnectedness of these two concepts and highlights interrelated issues, synergies and challenges when trying to meet the requirements of both the circular economy and reducing carbon.

→  Download the Circular Economy & Carbon in Construction Opinion Piece

15.11.21  LETI / CIBSE: What is Net Zero? FAQ Consultation

In May this year LETI released carbon definitions that provide clarity on terminology in collaboration with the Whole Life Carbon Network, supported by the RIBA. This document provides clarity on net zero carbon-operational energy, net zero embodied carbon etc. The next step is getting into the details on this. CIBSE and LETI are now working together to produce a set of FAQs on the definitions, to make sure the definitions are applied consistently in as many real-life situations are possible, and that they deliver the right outcomes. We are seeking your views on these FAQs – please download the PDF below to view the draft FAQs, (they also include the survey questions), once you have read these please complete the consultation survey here.

Consultation survey deadline: Sunday 28th November

→  Download What is Net Zero - FAQs & survey here

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15.11.21  LETI at COP26: Highlights

COP26 has come to a close, and although it may have not been the outcome we were hoping for, we had a really positive 2 weeks. Thank you to everyone who attended the events and workshops we were involved in. Check out our Gallery page below for our COP26 highlights including Geovation Net Zero event, CIBSE/ LETI What does Net Zero mean?, Open House event: LETI Climate Emergency Retrofit Guide​, LETI takeover Construction Scotland Innovation Centre.

→  Visit our Gallery page for LETI at COP26

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01.11.21  COP26: LETI Activities

COP26 is here! We have created a round-up of LETI COP26 activities for you, as well as other key COP26 activities from other organisations. Don't miss an exciting programme of presentations, debates and workshops and learn more about how to put your climate pledges into action in the transition to a net zero built environment!

→  Discover LETI COP26 activities here

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21.10.21  LETI launches Climate Emergency Retrofit Guide

Following the publication of the Climate Emergency Design Guide for new build in January 2020, LETI has gathered together experts from across the construction industry including Passivhaus Trust, ACAN, RIBA, CIBSE and the AECB to provide a blueprint on how to retrofit our existing domestic buildings.

 

By examining the upgrade of the UK housing stock and summarising what can be achieved, The Climate Emergency Retrofit Guide sets out what good retrofit looks like, and advises on how to deliver efficient, resilient and healthy homes. This includes defining energy use requirements, as well as highlighting the potential risks of poor retrofit.

→  Download Climate Emergency Retrofit Guide here

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14.10.21  LETI Wins AYA Leadership Award

LETI are delighted to have been awarded a Building Design Architect of the Year Award for Architectural Leadership. Congratulations to everyone who were nominated and won awards. We are proud to be recognised for building "a credible cross-industry network influencing policy and creating practical guidance. The judges said LETI has had considerable traction with clients and as a result was responsible for effecting real change."

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30.09.21  LETI Climate Emergency Retrofit Guide Launch

Following the publication of the Climate Emergency Design Guide for new build in January 2020, LETI has gathered together experts from across the construction industry including Passivhaus Trust, ACAN, RIBA, CIBSE and the AECB to provide a blueprint on how to retrofit our existing domestic buildings.

 

By examining the upgrade of the UK housing stock and summarising what can be achieved, The Climate Emergency Retrofit Guide sets out what good retrofit looks like, and advises on how to deliver efficient, resilient and healthy homes. This includes defining energy use requirements, as well as highlighting the potential risks of poor retrofit.

Please join us for an engaging and insightful online launch of the new guidance on Thursday 21st October 10:00 - 11:30 and put your burning questions to our expert panel. 

→  Register for the Climate Emergency Retrofit Guide Launch here

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11.08.21  LETI Client Guide for Net Zero Carbon Buildings

As our global community struggles to keep up with their growing climate commitments, the LETI Client Guide for Net Zero Carbon Buildings will help all construction clients navigate their way through a rapidly changing construction industry. It pulls together key details from numerous LETI documents and publications, which cover the ways in which briefing, designing, procuring, constructing, occupying, managing and valuing buildings must change.

→  Download the Client Guide for Net Zero Carbon Buildings here

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Industry experts, across the value chain, have offered LETI an insight into their thoughts and views on embodied carbon and how this is being managed through procurement. Supporting LETI guidance will be published this year, but if you would like a preview of the findings, please view our 2020 Specification & Procurement Survey analysis.

→  Specification & Procurement survey analysis

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Net zero performance should include the consideration of embodied and whole life carbon but in order to do this we need to combat a lack of consistent measurement leading to mis-aligned benchmarks, project targets and claims. Following the release of the Embodied Carbon Primer in 2020, LETI has been consulting with industry groups, including RIBA, IStructE, the Whole Life Carbon Network and more, to help resolve these inconsistencies. From these discussions, LETI has launched a suite of 4 documents that should be read together, along with the net zero operational one pager, to understand operational, embodied and Whole Life Carbon and how to achieve a net zero.

→  Download the publications here

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Get involved in LETI

There are many opportunities to support LETI, including volunteering your time and expertise. Subscribing to our mailing list is the best way to keep up to date with what we are doing:

→  Click here to sign up to the LETI mailing list

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