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LETI – Climate Emergency Retrofit Guide

The London Energy Transformation Initiative (LETI) was established in 2017 to support the transition of the capital’s built environment to net zero carbon, providing guidance that can be applied to the rest of
the United Kingdom (UK).

Over the last few years LETI has focused on providing guidance on defining what good looks like in the context of the climate mergency and LETI have published three key pieces of guidance: The Climate Emergency Design Guide; The Embodied Carbon Primer; and The Client Guide.
The LETI Climate Emergency Retrofit Guide was conceived to follow in the footsteps of the successful Climate Emergency Design Guide. Sharing knowledge on how to go about retrofit and setting targets. The information shared will inevitably be refined and evolve over time.

Typical house archetype examples

The LETI have developed a series of typical house archetypes based on average data for each building type. We start with an existing pre-retrofit building and then show what happens when the LETI targets are applied. In some cases, we have used the LETI best practice ‘constrained’ retrofit values, the effect of an ‘unconstrained’ retrofit and an example of LETI exemplar retrofit.

The guide is available to download for free from

➜ PDF ➜ LETI-Climate-Emergency-Retrofit-Guide.pdf ➜

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