Non-Domestic Renewable Heat Incentive (RHI)

Non-Domestic RHI closure

The Non-Domestic Renewable Heat Incentive Scheme (NDRHI) in Great Britain closed to new applicants on 31 March 2021. There are some circumstances under which an application for accreditation or registration can be made post-scheme closure, including those that have been granted an extension application or have a Tariff Guarantee extended commission date. 

Click below for more information.

Visit the NDRHI closure page


This page is only applicable for prospective applicants who have either:

  • been granted a tariff guarantee application which has since had the deadline for application extended to 31March 2023
  • been granted an extension application which has since had the deadline for application extended to 31 March 2023
  • your plant is already accredited  and requires an amendment to the current accreditation e.g., the installation has been replaced with a like for like plant or the installation has been relocated
  • You are purchasing an accredited installation which needs to be transferred to your ownership
  • Relocated an accredited installation to another site

To take part in the Non-Domestic Renewable Heat Incentive (RHI) scheme, you must demonstrate your installation meets all of applicable eligibility requirements. To begin, you must meet the following eligibility criteria below:

 You must meet one of the above conditions

  • You must be the owner of the installation, or where there are several owners, you must have permission to act for the other owners.
  • The plant must be an eligible renewable heat technology type and size.
  • No public grants can be used to fund any part of the installation unless it has been repaid (read our guidance that details the exceptions to this).
  • The plant must have been new at the time of installation, including specific ‘integral equipment’
  • The plant uses either liquid or steam as the heat delivery medium.
  • The metering arrangements must include the right types of meters, correctly calibrated and placed in correct locations. Every installation will require at least one MID Class heat meter (see Easy Guide to Metering)
  • The installation must not solely provide heating to single domestic premises
  • The plant must provide heat for at least one eligible heat use
  • Plants using solid biomass, solar collectors or heat pumps that are less than or equal to 45kWth must have Microgeneration Certification Scheme (MCS) certification or its equivalent.
  • The plant uses either liquid or steam as the heat delivery medium.
  • The plant must provide heat for at least one eligible heat use

Guidance volume 1: eligibility and how to apply and the easy guide to eligibility provides further information on who can apply, what technologies can be used and what is considered as an eligible heat source.

How do I apply?

Use this section to understand the joining requirements for the Non-Domestic RHI and the rules you need to stick to during your time on the scheme.

There are some key things to consider before you apply. You need to:

  • Be the owner of the installation (or have permission to act for the others if there are several owners).
  • Understand the eligibility requirements and your ongoing obligations.
  • Get documentation from manufacturers and installers as you’ll need to supply this evidence for your application. Keep this information safe as you may need it if you’re audited.

Read the relevant guidance documents on this website so your application goes smoothly.

Further information can be found by reading the Easy Guide to ApplyingEasy Guide to EligibilityFAQs, and correct installations illustrations.

The following documents might also be helpful to you.

If you want help filling in your application form:

If you need to repay a grant:

For help with non-single domestic premises:

Details about state aid transparency requirements

1. Get prepared

For the application process to be as smooth as possible, it’s essential to prepare in advance.

Take a look at our application NDRHI Application Help Sheets and our Easy guide to the Non Domestic RHI which show you the questions one by one. The guides include tips to where to find the required information and provides links to the documents and templates that you will need.

2. Evidence and documents needed

Alongside your application, you will be required to submit a number of documents and evidence. Details of that additional information can be found in the easy guide to applying.

We recommend you use your computer (rather than a smartphone or tablet) where possible.

We ask that the authorised signatory completes the form personally as bank and personal details are required.

Make sure that the name and personal details you use for your application are the same as the bank account you’re using. If you’re unsure what information your bank holds on you, you can check the Equifax Website.

3 Avoid the main pitfalls

To make sure your application gets processed quickly, avoid these common pitfalls:

  • Incomplete applications – particularly missing/incomplete documents or insufficient detail in text boxes.
  • Poor quality schematic diagram.
  • Poor quality Independent Report on Metering Arrangements (IRMA) (see chapter 13 of our volume 1 guidance)