CAT Logo
AECB Retrofit Standard
Zero Carbon Britain Logo

A standard for low energy, deep retrofits, with robust energy efficiency measures to drive down carbon emissions and deliver low running costs.

Effective retrofit is crucial to decarbonising the UK’s energy systems and is a major step towards achieving net zero. The AECB Retrofit Standard tackles our historic underperformance when upgrading buildings.

The AECB Retrofit Standard allows for easy self certification and increasing comfort & energy performance; it engages and upskills construction professionals to adopt and deliver higher performance targets for retrofit projects.

Rulers and measuring tape

Take our 20 second user survey to help us understand who we're reaching - Thank you!

Installing an offshore wind turbine

Help us improve our Zero Carbon Britain Resource Hub

Help us make our Resource Hub better by suggesting a resource or sharing your feedback on what we can do better.
Get in touch
Screenshot of people holding up messages about climate change solutions

Zero Carbon Britain Training and Events

Explore how we can create a modern, zero-emission society. Our courses are constantly being developed and updated to bring you the latest insights and information.
Upcoming Events
Four people in a conference group session

Zero Carbon Britain Innovation Lab

Bringing multi-stakeholder groups together to explore and experiment with new ways of doing things to make net zero happen.
Learn more

Email sign up

Keep up to date with all the latest activities, events and online resources by signing up to our emails and following us on social media. And if you’d like to get involved and support our work, we’d love to welcome you as a CAT member.