Multiple products

If you are unsure what is meant by ‘product’, please see Product eligibility listopen key term pop-up.

There are a number of circumstances where you may be able to install multiple products, and apply for these in one application. These scenarios have been outlined below. You will not be able to make separate applications for two products at the same property, unless one of the products is a solar thermal system. You may be allowed to make a single application for multiple products if they are the same technology and have been commissioned at the same time (see Commissioning open key term pop-up for further information on what 'commissioned' means).

We will ask you to send through all related MCS certificates as evidence. If your products were commissioned at different times, or are different technologies, you will need to choose which product to apply for. You will also be required to be metered for payment. For more information, please see the Essential guide to metering.

Product Scenario

Eligible?

Further information

Two or more of the same eligible product, commissioned at the same time.

Both products may be eligible.

If you have two of the same product commissioned at the same time, they may be considered to be two parts of the same heating system and should normally receive the same MCS certificate. The system capacity will be the combined capacity of the two products and, providing there is one MCS certificate, the application could be processed automatically.

Two or more of the same technology type, but different eligible products, commissioned at the same time.

Both products may be eligible.

If you have two different products of the same technology type (for example two air source heat pumps with different manufacturers), you may be able to make an application for one heating system (which is comprised of two different products). It is likely the products will receive separate MCS certificates, and will therefore be reviewed by our team.

Two or more of the same eligible product, commissioned at different times.

One product only.

If you have two products that were first commissioned at different times, they will be considered to be two separate heating systems and therefore the applicant will only be eligible to receive payments for one of the products. You will need to choose which product to apply for. Additionally, you will be required to meter your heating system to be eligible for payment so that we know how much heat comes from each.

Two or more of the same technology type, but different eligible products. Commissioned at different times

One product only.

If you have two different products commissioned at different times, they will be considered to be different heating systems. You will only be eligible to receive payments on one of the products, so will need to choose which product you wish to apply for. Additionally, you will be required to meter your heating system to be eligible for payment.

Two or more different technology types.

One product (unless one is solar thermal, then both products may be eligible)

If you install more than one technology type that is used for space heating then only one will be eligible and you will need to install meters.

A note on solar thermal systems: applicants who install a space heating system alongside a solar thermal system that only provides domestic hot water will not be required to install metering. Applicants can receive payments for both solar thermal and a space heating technology installed at the same property. Each product will require a separate application and will be paid separately.

You can have solar thermal installed to supplement space heating but you will only be able to apply for the primary space heating system under the Domestic RHI, the solar thermal component will be ineligible.

 

Product eligibility list

Among other requirements, your heating system must be a certain make, model and technology type to be eligible. We’ve listed these in a useful spreadsheet to reference before you purchase your product. More.

Commissioning

Your first commissioning date will determine when you can apply, your tariff rate and whether you are a ‘legacy’ or standard applicant. You can find the date on your Microgeneration Certification Scheme (MCS) certificate. More.