Domestic Energy Performance Certificates

A domestic Energy Performance Certificate, commonly known as an EPC, is an assessment of a property’s energy and carbon efficiency.

What is an Energy Performance Certificates?

Along with information on the nature and build of a property, Energy Performance Certificates provide information on the energy efficiency of a property, along with estimates on its running costs. An EPC will go on to make recommendations on how to improve the energy efficiency of the premises and reducing the running costs.

Valid for 10 years, domestic Energy Performance Certificates provide an overall efficiency score for domestic dwellings. Scores are out of 100 and the higher the rating the more energy efficient a home will be. The overall score out of 100 will determine which band a property falls into, with A being the most efficient and G being the least efficient.

Energy Performance Certificates were introduced as part of the European Union’s directive for energy efficient homes. First introduced in the UK in 2007 as part of the Home Information Pack for large domestic properties, EPCs were soon required for smaller properties and remained a legal requirement as the need for Home Information Packs was removed.

There are three primary types of EPC available; Domestic Energy Performance Certificates, Commercial Energy Performance Certificates and On Construction Energy Performance Certificates.

Domestic Energy Performance Certificates are issued for domestic dwellings that meet set requirements and are not exempt.

What will be found in an Energy Performance Certificate?

A domestic EPC rates a domestic dwelling’s performance in terms of:

– Energy use per square metre
– Energy efficiency based on the cost of the fuels needed to run installed systems
– Environmental impact based on carbon output

The following information will be found in modern Energy Performance Certificates:

Property details including address, style of house, certification date, certification number and size of the property.

Energy performance rating

out of 100, in bands A to G. The higher the score the higher the energy efficiency of the property and the lower the environmental impact.

Recommendations on how to increase the energy efficiency of the property, along with indicative costs and savings.

Environmental impact rating that scores the property, again out of 100 and in bands between A and G, on the carbon output of the property.

When are Domestic EPCs required?

An up-to-date EPC is a legal requirement whenever a domestic property is:

– Sold
– Let
– Built

An Energy Performance Certificate must be supplied to any potential buyer or renter of a property at the point of sale to allow for comparisons to be made on the energy efficiency and running costs associated with the dwelling.

It is also recommended that homeowners who have made significant improvements to their home, or are looking to do so, attain a new EPC in order to better understand the rating of their home.

An Energy Performance Certificate is valid for 10 years. To see if your property has an up-to-date EPC, visit the Domestic EPC register at

How can I attain an Energy Performance Certificate for my home?

If you’re looking to sell or rent your property and require an EPC certificate, you will need to contact an accredited EPC assessor.

GreenGenUK is qualified to produce domestic, commercial and on construction Energy Performance Certificates. We will arrange a mutually convenient time to assess the property and you can rest assured our assessments abide by all SAP and government grading criteria.

Thanks to our experience of installing renewable heating technologies and domestic energy efficiency improvements, GreenGenUK are able to analyse the grading of your EPC and make best suggestions to lower the running cost of properties.

The cost of a attaining an Energy Performance Certificate will vary dependant on the nature of the property. To receive a quote for your EPC, contact us on one of the methods listed below.

Phone us in the office on 0800 093 3299 to speak directly with one of our renewable consultants


Fill out the enquiry form found at the bottom of this page and have one of our consultants get in touch with you.