Guidance

Methodologies for expressing the energy performance of buildings in England and Wales: notice of approval (17 March 2025)

This notice of approval sets out the national calculation methodologies for expressing the energy performance of buildings in England and Wales.

• From: Ministry of Housing, Communities and Local Government
• Published: 17 March 2025

Applies to England and Wales

Documents

Notice of approval of the methodologies for expressing the energy performance of buildings in England and Wales (17 March 2025)

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This notice of approval sets out the national calculation methodology for expressing the energy performance of buildings, as approved in accordance with Regulation 24 of the Building Regulations 2010 (SI 2010/2214), for the purposes of the Energy Performance of Buildings (England and Wales) Regulations 2012 (SI 2012/3118). 

This updated notice of approval has been issued because a minor update has been made to the specification of SAP 10.2, the approved methodology for expressing the energy performance of new domestic buildings in England.  

This updated notice of approval supersedes the Notice of approval of the methodologies for expressing the energy performance of buildings in England and Wales dated 17 May 2024.

Published 17 March 2025