UK Net Zero Carbon Buildings Standard Recognises CIBSE NABERS UK Energy for Office Ratings

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• UK Net Zero Carbon Buildings Standard Recognises CIBSE NABERS UK Energy for Office Ratings

10 March 2026

The NABERS UK Energy for Office ratings, certified by CIBSE and administered through its wholly owned subsidiary CIBSE Certification, may now meet the operational energy requirements of the UK Net Zero Buildings Standard (UKNZCBS), as defined in Annex C of the Standard. 

Since taking on the role of NABERS UK administrator in 2024, CIBSE has worked closely with NABERS and the Better Buildings Partnership (BBP) to drive the decarbonisation of buildings through the expanding NABERS UK Energy for Office scheme. This recognition marks a significant milestone for the scheme, reinforcing its role as a trusted benchmark for operational energy performance. 

Over the past months, the CIBSE Certification team and the UKNZCBS team have collaborated   . Their joint efforts have been successful, ensuring that NABERS UK Energy for Office certifications - including the prestigious 4.5★ rating - may now be used to demonstrate compliance with UKNZCBS operational energy requirements for existing offices. 

The recognition of NABERS UK by UKNZCBS highlights the scheme’s growing influence in driving sustainable, low-carbon office buildings across the UK, providing a clear pathway for organisations seeking to measure, improve and validate their operational energy performance.

Kieran O’Brien, Director of CIBSE Certification, said: “We are thrilled that NABERS UK Energy for Office ratings are recognised under the UK Net Zero Buildings Standard. This demonstrates the credibility and robustness of the scheme, providing building owners, occupiers and investors with confidence that their operational energy performance meets one of the highest sustainability standards in the UK. It’s another step forward in CIBSE’s mission to support the decarbonisation of buildings and a net-zero built environment.” 

Go to UK Net Zero Buildings Standard.

Go to CIBSE Certification.

Picture: A collage of the CIBSE, NABERS UK and UKNZCBS logos.

Article written by Dave Mapps | Published 10 March 2026

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