FAQ: Answer

What is Seasonal Performance Factor (SPF)?

The SPF measures the energy efficiency of the property and is calculated by looking at heat losses, room size and output of the heat emitters.   

The more accurately sized the heat emitters you have, the higher the SPF – as the heating will be as energy efficient as possible. 

The governments default Seasonal Performance Factor (SPF) is 2.5. 

More Questions About Renewable Heat Incentive

Can I calculate how much I will receive through the Renewable Heat Incentive?

There is a helpful Renewable Heat Incentive calculator provided online by the Department of Business, Energy & Industrial Strategy, follow the link below to access the calculator to find out how much Renewable Heat Incentive you could be entitled to.

Renewable Heat Incentive Calculator

How do I get an Energy Performance Certificate (EPC)?

An Energy Performance Certificate will need to be completed by a local energy assessor. 

You can find an energy assessor by using the EPC Register Find a local Energy Assessor near you.

How do I apply for the RHI?

The application for the renewable heat incentive (RHI) is made via OFGEM, it is the homeowners responsibility to make the application, the application cannot be made by the installer on the homeowners behalf.

If you have already installed a renewable heating system, you have up to 12 months to apply to the scheme from the date it is commissioned.  This is the date that the date the installer tests and signs off the system (you will find this date on your Microgeneration Certification Scheme certificate)

Please see the OFGEM essential guide for applications for full details and guidance.

Before you apply, you can use this OFGEM resource which is a helpsheet on how to answer the RHI application form OFGEM application form helpsheet.

When you are ready to apply, you can apply on the OFGEM website here Apply for the RHI here on the OFGEM website.

What information do I need to complete my RHI application?

Before you apply for the RHI, you will need to make sure you have followed any requirements and gathered all the relevant information you need to complete your application.

Applicants will need to make sure they install an eligible system and meet minimum insulation requirements to be eligible for the Domestic RHI and provide a valid Energy Performance Certificate (EPC) which is no more than 24 months old, the application must be made by the homeowner as this is an application based on your property details. 

To make this easier and so you have the most up to date and relevant information needed for your application, please see the link below to OFGEM which provides a factsheet to guide you through the application process.

Factsheet from OFGEM for the information required to make your application.

There is also a step by step application form helpsheet which is useful to demystify the application from

OFGEM helpsheet for application form questions.


What does MCS approved mean?

MCS stands for Microgeneration Certification Scheme MCS is a standards certification which certifies low-carbon products and installations used to produce electricity and heat from renewable sources. 

MCS is a mark of quality. Membership of MCS demonstrates adherence to these recognised industry standards; highlighting quality, competency and compliance. 

Which Accreditation should my Installer have?

If you wish to apply for the Renewable Heat Incentive your installer must be MCS approved.

How much will the Renewable Heat Incentive (RHI) be for a Ground Source Heat Pump?

The UK Government’s Domestic Renewable Heat Incentive (RHI) is calculated by the space heating requirement of the property (detailed on your Energy Performance Certificate)and the efficiency of the heat pump that we install. You can expect payments between £2,000 – £4,500 per annum. Your specific payment will be calculated based on your individual property.

Why should I switch to a renewable heating system?

If you are interested in sustaining the world we live in, switching to a renewable heating system, such as an air source or ground source heat pump, means you are using a naturally replenished source of energy (i.e. the sun).  

Using renewable energy rather than oil or LPG helps the UK reduce its carbon emissions and meet their carbon reduction targets. 

The government pays an incentive to property owners who install a renewable heating if their system meets certain energy-efficiency requirements, the homeowner can then apply for the incentive via OFGEM. 

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