What is the Renewable Heat Incentive for non-domestic customers in Great Britain?

The Renewable Heat Incentive is a financial incentive scheme run by DETI designed to increase the uptake of renewable heat and reduce the UK's carbon emissions.

The scheme provides financial support to businesses in Great Britain via a subsidy per kWhth of eligible renewable heat generated from accredited installations.

Ofgem are responsible for administering the scheme. DETI are responsible for the policy and tariff rates.

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Who is the scheme for?

A non-domestic installation is a renewable heat system that supplies large-scale industrial heating right down to small community heating projects. This includes:

  • Small Business
  • Office
  • Process & Manufacturing
  • Leisure
  • Medical facilities
  • Education
  • Sports facilities
  • District Heating Schemes - multiple homes served by one boiler 

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How does it work?

Payments made on a quarterly basis

  • Amounts determined by ACTUAL heat output of the system - measured via heat meters
  • Tariffs adjusted annually in line with the Retail Price Index (RPI)

Solar Thermal RHI eligibility criteria

  • Collector type must be flat plate or evacuated tube
  • Equipment and installer must be MCS approved - MCS certification requirements apply for installations less than or equal to 45kWth
  • Equipment must be new at time of installation
  • Grants must not have been previously used for purchase/installation of the equipment
  • Correct metering is in place - meter readings to be submitted
  • Renewable heat installations commissioned since 1 September 2010 will also be eligible to apply for accreditation under the RHI scheme

How do I apply?

To apply for accreditation for an installation, you will need to apply online via the Ofgem NIHRI website www.ofgem.gov.uk/NIHRI and send in a separate hard copy form with your organisation's bank account details.

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What you'll need to provide

You will need to provide evidence in support of your application that shows the installation company details, date of installation and installation serial number. This could be any one (or a combination) of the following:

  • Receipts and / or invoices relating to the installation of the equipment 
  • Commissioning certificate
  • Commissioning report
  • Photograph of the installation clearly showing the serial number of the equipment 


Why Solar Thermal?


Every year the sun provides over 8000 times as much energy as we consume worldwide. A well designed solar thermal system can provide up to 70% of a buildings needs annually.

This is why solar thermal systems are one of the most cost-effective and environmentally friendly renewable energy solutions available - reducing fuel bills and CO2 emissions.


Solar thermal energy enjoys many economic and environmentally advantages over other forms of energy including:

  • RHI eligible
  • Generate FREE hot water all year round
  • Reduce your energy bills
  • Environmentally friendly
  • Reduces carbon footprint
  • Generates heat energy even on overcast and cloudy days

How solar thermal works?

  1. The solar panels collect energy from the sun which increases temperature of the heat transfer fluid contained within the panels.
  2. When the fluid in the panels is hot enough, the pump station circu­lates the hot fluid around the system.
  3. The hot fluid is pumped around the coil at the bottom of the solar cylinder and heats the water that is stored inside.
  4. The colder now fluid returns to the panels where it is reheated by the sun’s energy and the cycle starts again.
  5. The solar controller, which is the brains of the system, enables you to time your hot water, just like a central heating programmer, and measure the amount of energy you have gained from the sun.
  6. If the temperature sensor in the cylinder detects that the solar panel hasn’t collected enough energy to heat the hot water to the required temperature, a supplementary heat source (e.g. gas or oil boiler) is required to top up the temperature of the hot water.


Why Kingspan Solar?

All Kingspan Solar packs come with a range of support services to help with installation.

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Engineering, Service & Support

We provide world-class design consultancy, engineering expertise and comprehensive advice from initial site visit and assessment to detailed design drawings and concepts, delivery and installation support.


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