Domestic RHI Tariff rates

The domestic RHI provides a major incentive for home owners to invest in biomass boilers, air source heat pumps, ground source heat pumps and solar thermal renewable heat technologies. The tariffs are based on pence/kWh of deemed renewable heat delivered.

The RHI tariff table below shows the technologies that are eligible for Domestic RHI and the tariffs for each technology.

Domestic RHI Tariff Rates
Applications SubmittedBiomass boilers & stoves
Air source heat pumps
Ground source heat pumps
Solar thermal
01/04/16 onwards5.217.5119.3319.74
01/07/16 onwards4.697.5119.3319.74

An Energy Performance Certificate (EPC) is required for those home owners who wish to claim the domestic RHI, this is required by Ofgem to determine the deemed heat of a building for domestic RHI purposes.

Although metering of heat used is required for RHI payments for non domestic buildings, for the Domestic RHI metering is seen as impractical. However, second properties and those with fossil fuel heating alternatives will have to install meters and be paid on heat generated (up to the limit for deemed heating).

Energy Performance Certificate (EPC)

An Energy Performance Certificate (EPC) is now required whenever a building is built, sold or rented. The certificate provides ‘A’ to ‘G’ ratings for the building, with ‘A’ being the most energy efficient. The current average rating is ‘D’.

Energy Performance Certificate

This is part of the Energy Performance of Buildings Directive, which all EU member states must adopt.

EPCs come with information on a building’s energy use and carbon dioxide emissions and a report with recommendations to reduce energy use and carbon dioxide emissions.

Only accredited Domestic Energy Assessors can produce valid EPCs in England, Wales and Northern Ireland.


Heat Pump




Solar PV


Solar Thermal