Retrofit technical considerations, Standards and accreditations, Support for businesses delivering retrofit

EPC Ratings

Introduction

An Energy Performance Certificate (EPC) rating for domestic homes in the UK is a measure of a property’s energy efficiency. The rating scale runs from A (most efficient) to G (least efficient). The EPC provides information on how much energy a home uses, the carbon emissions produced, and recommendations for improvements that could enhance energy efficiency.

Published: 7 December 2025

EPCs are required when a property is built, sold, or rented. They help potential buyers or tenants understand the energy costs and environmental impact of a home. The certificate is valid for ten years, and energy efficiency improvements can improve the rating.

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