Renewable Heat Incentive

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Last updated: 12 November 2019

Renewable Heat Incentive

What is the Renewable Heat Incentive (RHI)?

The Renewable Heat Incentive (RHI) is a scheme formed by the UK Government to encourage private households, communities, and businesses to install renewable energy technologies for heating purposes, through financial support.

The RHI was first established in April 2014, and on the 22nd of May 2018, the latest regulations came into effect. RHI was set up in order to minimise the effects of climate change, as well as being the main driver towards the UK’s goal for 2020, which is to have 12% of heating coming from renewable energy sources.

There are two types of RHI schemes: domestic and non-domestic Renewable Heat Incentive.

    • Domestic RHI is designed for those installations that heat one household. In other words, it applies to private residences.
    • Non-domestic RHI is for those renewable heating systems in public, commercial, or industrial facilities. However, this page covers solely the domestic Renewable Heat Incentive (DRHI).

Only the following types of renewable heating systems are eligible for the domestic RHI scheme:

Learn More About the Domestic Renewable Heat Incentive

How Does the Renewable Heat Incentive Work?

The domestic RHI works as a financial support program for households with renewable energy heating systems. With the help of the RHI, households can save a significant amount of money in the long run, if they have eligible heating systems like heat pumps installed in their home.

In order to be approved for the domestic RHI, it is very important to be aware of all the steps in the application process. There are various requirements at each step that applicants must be familiar with, relating to both the renewable energy technology installation and the home itself.

Quality time spent on investigating the right renewable heating solution and installer increases the chance of your RHI application being approved.

The Domestic RHI Application Guide

How Are Domestic RHI Payments Calculated?

The domestic RHI payments are calculated taking into consideration three major factors:

  • Your property’s annual heating and hot water demand
  • Your heating system’s Seasonal Coefficient of Performance (SCOP)
  • Current RHI tariffs

The rate of RHI payments that you receive can change year by year. Since the Renewable Heat Incentive came into force, the scheme used a ‘degression’ system created to manage the budget for the domestic RHI.

However, on 31 May 2019, the Department for Business, Energy and Industrial Strategy (BEIS) announced that there will be no degression from 1 July 2019.

The table below illustrates the current and future Ofgem RHI tariffs for each of the eligible renewable heating systems.

Current and Future Domestic RHI Tariffs

Applications submitted Biomass boilers and stoves (p/kWh) Air source heat pumps (p/kWh) Ground source heat pumps (p/kWh) Solar thermal (p/kWh)
01/01/2019 - 31/03/2019 6.74p 10.49p 20.46p 20.66p
01/04/2019 - 30/06/2019* 6.88p 10.71p 20.89p 21.09p
01/07/2019 - 30/09/2019 6.88p 10.71p 20.89p 21.09p
01/10/2019 - 30/12/2019 If any new tariff changes are to be made due to degression, the announcement by BEIS would be made by 1 August 2019.

* These tariffs were adjusted in line with Consumer Price Index (CPI)

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Here is an example of how domestic RHI Payments can be calculated:

  1. The annual heating and hot water demand are identified from the household’s Energy Performance Certificate (EPC), for example, 30,000 kWh/yr.
  2. The amount of electrical energy that the heating system will consume is calculated by dividing the annual heating and hot water demand with the heating system’s Seasonal Coefficient of Performance (SCOP), usually estimated between 2,5 and 4 by the MCS installer, for instance, 30,000 / 3 = 10,000 kWh/yr.
  3. The “renewable” content is calculated by deducting the previously calculated figure from the property's annual heating and hot water demand, for example, 30,000 - 10,000 = 20,000 kWh/yr.
  4. The RHI annual payment is calculated by multiplying the previous figure by the current RHI tariff (20.89 p/kWh for ground source heat pump). For instance, 20,000 x 0,2089 = £4,178 per year.

In case you do not want to make calculations yourself, use the RHI calculator to find out what payments you could receive from installing a renewable heating technology.

How Do I Install an RHI Heating System?

After thorough research of all the RHI scheme requirements, it is wise to consider all the pros and cons of heat pumps and other eligible renewable energy heating systems. It is important to pick the best renewable energy heating technology for your household that will not only serve as an energy source but also lead to significant savings on your energy bills.

eligible heating systems

In case you are unsure if your chosen heating system is eligible for domestic RHI, check out a spreadsheet published by Ofgem. It includes different types of eligible renewable heating solutions based on the information provided by the Microgeneration Certification Scheme (MCS).

Together with the installation of your chosen renewable heating system, you might also have to install metering. There are two types of metering: metering for performance and metering for payment. Which type is required depends on your choice of heating system.

‘Metering for performance’ is an eligibility obligation for all new heat pumps. ‘Metering for payments’ is an eligibility requirement for heat pumps, biomass stoves, and boilers.

As a contrary, if you have assessed all the pros and cons of solar energy you opted to go for solar thermal system, you do not have to install metering. The reason being that for heating domestic water, solar thermal is not obligated to be metered.

Lastly, you should spend some time choosing the right renewable energy heating technology installer. Alongside that, make sure that your heating system installer has a Microgeneration Certification Scheme (MCS) certificate.

RHI - How Do I Apply?

In order to apply for the domestic RHI, you have to live in England, Scotland or Wales. Thereafter, to apply for the domestic RHI, you have to own a home, be either private or social landlord, or build a new property yourself, meeting all the necessary requirements.

You have as many as 12 months to apply for the Domestic Renewable Heat Incentive scheme.

When it comes to the required documents you will need a Microgeneration Certification Scheme (MCS) installation certificate number, which you should receive after the MCS certified installer completes the installation of your renewable heating system.

Thereafter, the Green Deal Assessment for your building will have to be carried out. This assessment is made up of two documents:

  • Energy Performance Certificate (EPC) for your household, showing the energy efficiency of the building by giving a rating between A (Very efficient) and G (Inefficient).
  • Occupancy Assessment, which gives suggestions on improving the energy efficiency of the property.

Additionally, you have to be ready to give your bank details and the amount you have paid for the installation of your renewable heating system. If you have received payments from public funds before, you should put it on notice, including the amount you got and when you were paid.

necessary documents

  • Microgeneration Certification Scheme (MCS) certificate number
  • Energy Performance Certificate (EPC) number
  • Occupancy Assessment document
  • Personal information and bank details

Ongoing Renewable Heat Incentive Obligations

From the day you apply to the domestic RHI you automatically consent to all the ongoing obligations that go with the scheme. One of your responsibilities is complying with the ongoing obligations related to your household and the specific renewable energy heating system that you have installed.

Year after year, you have to fill out an annual declaration. By completing the declaration, you ensure that you comply with all the scheme rules so that the right amount of money is paid for the heat that you generate.

These are some of the annual declarations you will have to submit:

  • That you still own a heating system in your property
  • That the system is in good working order and has not been substituted
  • That the meter you have been required to install is in good operating condition
  • And other criteria that you need to fulfil regarding the occupants of the property and your heating system

On top of that, Ofgem carry out audit checks to make sure that every domestic RHI participant follows the scheme rules. Anyone who has applied to the domestic RHI can be chosen for the audit check at any time. Audit checks for renewable heating technologies are selected based on multiple reasons, as well as random sampling.

Frequently Asked Questions About the Domestic RHI

After you have been approved for the domestic RHI you will receive quarterly payments (every three months). RHI payments will be transferred directly to your bank account by BACS transfer. Payments will be transferred only to the UK bank accounts that accept pound sterling deposits.

The domestic RHI payments are granted to owners of domestic properties who have installed one of the eligible heating systems and have applied for the financial incentive. Exact amounts of these payments are determined the type of renewable energy heating system installed, latest tariffs, and metering.

Once you have been approved for the domestic RHI, you will receive payments every quarter, for seven years. Be aware that you have to continue to comply with the domestic RHI scheme rules in order to receive payments. Otherwise, you run the risk of not receiving any payments.

The exact amount of money you could save with RHI depend on your heating system, renewable heat that the system generates, and the current tariffs. Overall, you could save between £200 and £4,000 every year just from RHI payments.

In general, the tax you pay is not affected by the type of RHI scheme (domestic or non-domestic). It is affected by the way you use renewable heat. For instance, if you are using renewable heat only for personal domestic use, the payments are not chargeable to income tax. On the other hand, if you are a business or a trader, RHI payments are a business receipt, meaning that normal income and corporate rules and deductions apply to the receipt.

Heat pump installation costs are mainly dependent on the price of the heat pump itself, which varies based on the system’s heating capacity, as well as the cost of the installation type. For example, ground source heat pump installation costs, including the heat pump price and installation costs can be around £11,000 - £20,000.