• solid biomass, including when contained in waste (including CHP)
  • ground and water source heat pumps
  • air to water heat pumps
  • geothermal (including CHP)
  • solar thermal (at capacities of less than 200 kWth)
  • biogas combustion (except from landfill gas but including CHP)
  • biomethane injection
Column 1 Column 2 Column 3 Column 4
Item 1 Item 2 Item 3 Item 4
Item 11 Item 22 Item 33 Item 44
Levels of Support
Tariff nameEligible technologyEligible sizesTariff rate (pence/kWh)Tariff duration (Years)Support calculation
Small commercial biomass    Solid biomass; municipal Solid Waste (incl. CHP)    Less than 200 kWth Tier 1: 7.9
Tier 2: 2
  20      Metering Tier 1 applies annually up to the Tier Break, Tier 2 above the Tier Break. The Tier Break is: installed capacity x 1,314 peak load hour, i.e.: kWth x 1,314
Medium Commercial biomass  200 kWth and above; less than 1000 kWth  Tier 1: 4.7 
 Tier 2: 1.9 
Large commercial biomass 1000 kWth and above 1 Metering
Small commercial heat pumps Ground-source heat pumps; Water-source heat pumps; deep geothermal  Less than 100 kWth 4.5 20  Metering 
Large commercial heat pumps 100 kWth and above 3.2
Solar collectors Solar collectors Less than 200 kWth 8.5 20 Metering
Biomethane and biogas combustion Biomethane injection and biogas combustion, except from landfill gas Biomethane all sclaes, biogas combustion less than 200 kWth 6.8 20 Metering