# The Building Regulations 2010, Regulation 26A: Fabric energy efficiency rates

Extent: E

Where a dwelling is erected, it shall not exceed the target fabric energy efficiency rate for the dwelling that has been approved pursuant to regulation 25, applying the methodology of calculation and expression of the energy performance of buildings approved pursuant to regulation 24.

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Source: https://www.legislation.gov.uk/uksi/2010/2214/regulation/26A (the official version)
Page: https://openlegislation.uk/building-regulations-2010/regulation-26A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.