Guidance

Green Homes Grant: make energy improvements to your home

How to use your Green Homes Grant voucher to make energy efficient improvements to your home.

Applies to England

If you’re a homeowner or residential landlord you can use a Green Homes Grant voucher towards the cost of installing energy efficient improvements to your home.

Applications to the Green Homes Grant scheme are closed.

If you applied for a voucher before 5pm on 31 March 2021, your application will still be processed. We will be in touch to confirm if your application is successful.

If you have already been issued a voucher, you can still use it to get the work done. You should redeem your voucher before its expiry date.

Green Homes Grant installers can continue to work in people’s homes during current coronavirus restrictions. Your installer must follow the COVID-19 Secure guidelines.

How much you can get

Your voucher covers up to two-thirds of the cost of your chosen improvements, with a maximum government contribution of £5,000.

If you, or someone in your household, receives certain benefits, your voucher may cover up to 100% of the cost of your chosen improvements. The maximum overall government contribution is £10,000.

Eligibility

If you submitted an application for a voucher by 31 March 2021, you may be eligible for a voucher if:

  • you own your own home (including long-leaseholders and shared ownership)
  • you own your own park home on a residential site (including Gypsy and Traveller sites)
  • you’re a residential landlord in the private or social rented sector (including local authorities and housing associations)

You cannot get the Green Homes Grant voucher for newly built homes which have not been previously occupied.

If you’re claiming other grants or funding

Energy Company Obligation (ECO)

You cannot claim a Green Homes Grant voucher towards the cost of a measure which has also had funding under the Energy Company Obligation (ECO). You can claim both ECO and Green Homes Grant as long as they are each for different measures – for example loft insulation and cavity wall insulation.

Domestic Renewable Heat Incentive (RHI)

You can claim both the Domestic RHI and the Green Home Grant for a renewable heat installation. You must claim the Green Home Grant voucher first and then notify Ofgem that you have used it when you apply for accreditation to the Domestic RHI. The Green Homes Grant will then be deducted from your Domestic RHI payments.

Local Authority Delivery Scheme

If you have already received a grant from your local authority as part of the Local Authority Delivery Scheme, you are not eligible for a Green Homes Grant voucher.

If you’re a landlord

State aid

The Green Homes Grant counts towards the total de minimis state aid you’re allowed to get over a 3 year period. You must check that you will not exceed the de minimis state aid threshold of €200,000.

Energy efficiency standard

If you have applied for a voucher for a private rented sector property, you need to either provide:

  • proof that you have met this standard
  • proof of an exemption

What the voucher can be used for

Home improvements

The available measures are split into ‘primary’ and ‘secondary’ measures.

Primary measures

The voucher must be used to install at least 1 primary measure.

Insulation

The following insulation measures are covered by the voucher:

  • solid wall insulation (internal or external)
  • cavity wall insulation
  • under-floor insulation (solid floor, suspended floor)
  • loft insulation
  • flat roof insulation
  • pitched roof insulation
  • room in roof insulation
  • insulating a park home

Check the additional requirements around insulation measures (ODT, 8.75KB).

Low carbon heat

The following low carbon heating measures are covered by the voucher:

  • air source heat pump
  • ground source heat pump
  • solar thermal (liquid filled flat plate or evacuated tube collector)
  • biomass boiler
  • hybrid heat pump

Check the additional requirements around low carbon heat measures (ODT, 9.43KB).

Secondary measures

If you install at least 1 primary measure, your voucher can be used to help cover the cost of any of the following secondary measures.

The amount you get towards the cost of secondary measures cannot exceed the amount you get for primary measures.

You will only be able to redeem vouchers for secondary measures once you have installed a primary measure and redeemed the vouchers for that measure.

You cannot use the voucher to repair secondary measures you already have installed in your property.

Windows, doors, insulation and draught proofing

The following measures are covered by the voucher:

  • draught proofing
  • hot water tank insulation
  • double or triple glazing (where replacing single glazing)
  • secondary glazing (in addition to single glazing)
  • external energy efficient replacement doors (replacing single glazed doors, or doors installed before 2002)

If you already have these measures installed in your property, you cannot use the voucher to remove or replace them.

Vouchers for eligible doors are limited to a maximum government contribution of £1,000 per door. This can be averaged across all the doors on an application.

You cannot use the voucher to install a garage door that lets vehicles in and out of a garage. However, you can use a voucher for an external door that connects a garage to your property.

Heating controls and insulation

The following measures are covered by the voucher:

  • hot water tank thermostat
  • hot water tank insulation
  • heating controls (such as, appliance thermostats, smart heating controls, zone controls, intelligent delayed start thermostat, thermostatic radiator valves)

You can use the voucher to replace heating controls and hot water tank thermostats if the replacement is for a different type and is intended to improve energy savings. For example, you can replace a manual thermostat with a smart thermostat.

What the voucher covers

Costs that are covered by the voucher include:

  • labour
  • materials
  • VAT

Additional works will be covered by the voucher if they are necessary for the installation of measures. Find out what the voucher covers (ODT, 12.7KB).

Work cannot be completed by yourself, a member of your household or your immediate family.

All work covered by the voucher must be completed by a TrustMark-registered installer who is also registered for the scheme. Your installer will also need to meet PAS and MCS standards when installing your measures.

Getting the voucher

You will receive a separate voucher for each of the measures that you have applied to install.

Each voucher is only valid for the measure and property you have applied for. The voucher is only for use by the named applicant and cannot be transferred to another person.

You can only begin work once your voucher has been issued. Any work that was started before that date cannot be claimed.

Vouchers issued up to 31 August 2021 will be valid for 3 months from the date they are issued.

Vouchers issued after 31 August 2021 will expire no later than 30 November 2021.

All vouchers should be redeemed before their expiry date.

Voucher extensions

If you request a voucher extension at any date up to and including 31 July, vouchers will be extended for 90 days or until 31 October, whichever is soonest.

Extension requests received after 31 July may be granted in more limited circumstances. For the majority of vouchers, extension requests may be granted only if work has started on your voucher measure. Vouchers that are extended will expire on 31 October 2021.

We recognise that occasionally, once work has started, circumstances may arise that are fully beyond your control. In such a situation please contact the scheme administrator as soon as possible to assess if a short extension until 30 November 2021 at the latest could be considered (subject to circumstances). No vouchers will be extended beyond 30 November 2021.

If you have a voucher for one or more of the following measures that was issued after 30 April, you may still be granted an extension for the voucher after 31 July, even if work has not started. Vouchers will be extended for 90 days or to 30 November 2021, whichever is sooner.

The measures are:

  • solid wall insulation (internal or external) 
  • park home insulation 
  • air source heat pump  
  • ground source heat pump  
  • hybrid heat pump 
  • biomass boiler  

If you have a voucher for a primary measure that expires after 31 July and has not yet been redeemed, then you can still apply for an extension to any secondary measure voucher that you have, even if work has not started on them. Vouchers will be extended to 31 October 2021 or the expiry date of your primary voucher, whichever is later.

Please note that extensions for secondary measures are not automatically granted. You will need to apply for extensions on each voucher that you wish to extend. 

Contact the scheme administrator to request a voucher extension.

You should include the relevant voucher reference.

Changing your voucher

Any changes requested after 31 August 2021 are highly likely to be refused, as there will not be enough time to process the changes, issue a new voucher, and allow for the work to be completed and the voucher to be redeemed, all before its expiry date.

If you have been issued a voucher and want to change it, you should contact the scheme administrator and explain why you want to request a change.

The scheme administrator will consider the change. If it is granted, your current voucher will be cancelled, and you will be issued with an amended voucher.

It is strongly recommended that you request any changes as soon as possible.

Getting the work done

Once your voucher has been issued, you can begin the work.

Your installer may ask you for a deposit. It cannot be larger than your expected contribution to the cost of measures under the quote they have provided you.

If you have applied under the low-income scheme, your installer can only ask you for a deposit when the total cost of the work exceeds the £10,000 grant. In this case, only the excess amount will be eligible for a deposit.

After the work is done

Once the work is completed, your installer must give you:

  • a dated copy of an invoice showing the supply and installation cost of your chosen measures. You must have 1 invoice per measure
  • any certification for energy efficiency improvement measures
  • a guarantee document from the installer
  • an MCS certificate and relevant manufacturer instructions (if you have installed a low carbon heating measure)
  • a Biomass Suppliers List (if your measure is a biomass fuelled low carbon heating system)

Redeeming the voucher

You must redeem your voucher before it expires.

To redeem your voucher you will need:

  • your reference number (received when you first applied for the grant)
  • the post code of the property where the measure has been installed
  • the email address that you used to make your application
  • your voucher number
  • the final cost of the measure (including VAT, as applicable)
  • a digital copy of your dated invoice. You will need 1 invoice per measure

You will need to confirm that:

  • the installation was completed satisfactorily
  • you have received the necessary certification documents from the installer
  • you have paid your share of the costs to the installer (if applicable)

When you redeem your voucher the grant will be paid on your behalf directly to the installer.

Help and support

You can contact the Green Homes Grant team.

Read our correspondence procedure for advice on how to:

  • make an enquiry or complaint
  • appeal a decision
  • make a formal request (for example, a Freedom of Information Request)
Published 28 August 2020
Last updated 19 July 2021 + show all updates
  1. We have added information about how to change your voucher once it has been issued.

  2. We have added further information on how to request an extension to your voucher.

  3. You can no longer apply for a Green Homes Grant voucher. If you applied for a voucher before the closing date, your application will still be processed and we will be in touch to confirm if your application is successful. If you have already been issued a voucher, you can still use it to get the work done.

  4. The Green Homes Grant scheme will be closing to new applications at 5pm on 31 March 2021.

  5. The scheme has been extended by 1 year to 31 March 2022.

  6. Updated with details of how to redeem a voucher.

  7. Updated to clarify that Green Homes Grant installers can continue to work in people's homes under the National Restrictions from 5 November.

  8. We will start to issue vouchers to customers from early November 2020.

  9. You can now apply for a Green Homes Grant.

  10. The document providing information on items that are and are not covered by the voucher has been updated.

  11. First published.