If you are applying for Renewable Heat Incentive (RHI) payments for a domestic property, then you will need an EPC (Energy Performance Certificate) and a Green Deal Assessment carried out on the property.
To qualify for RHI payments, the property will need to have 250mm or more of loft insulation and cavity wall insulation. In some circumstances, these may not be possible but RHI payments may still be available.
Available technologies include air source heat pumps, biomass boilers, ground source heat pumps and solar thermal. The full list of heating plant is available here.
Payments are based upon the space and water heating demand displayed on the EPC and are made for 7 years, with the tariff varying depending on the technology installed. For more information on the renewable heat incentive, see the non-domestic site here and the domestic site here.