Tariff level tables
See the tariff levels for each type and size of system
The main benefit of the RHI is the generation tariff, which is paid for every kilowatt-hour of energy produced. The level of payment varies depending on the technology and the system size, as further described here.
The following tariffs apply from 1st April 2013 to 31st March 2014 (including adjustments for RPI):
|Eligible technology||Eligible sizes||Tariff rate (p/kWh)|
Municipal Solid Waste (incl. CHP)
|Less then 200 kWth||Tier 1: 8.6|
|Tier 2: 2.2|
|Medium biomass||200 kWth and above; less than 1000 kWth||Tier 1: 5.3|
|Tier 2: 2.2|
|Large biomass||1000 kWth and above||1.0 [A]|
|Small ground source||
Ground-source heat pumps;
Water-source heat pumps;
|Less than 100 kWth||4.8 [A]|
|Large ground source||100 kWth and above||3.5 [A]|
|Solar thermal||Solar thermal||Less than 200 kWth||9.2 [A]|
|Biomethane||Biomethane injection & biogas combustion, except landfill gas||Biomethane all scales; biogas < 200 kWth||7.3|
[A] The government has proposed new tariffs for these bands as detailed here.
Details on how the 'tiers' operate are given here.
All these tariffs are fixed for a duration of 20 years.
The tariffs proposed in the government's July 2013 proposals are:
|Air source heat pumps||7.3|
|Ground source heat pumps||18.8|
|Solar hot water||19.2 [a]|
[a] Maybe higher, up to 21.7
There are also grants available before the tariffs come into effect under the Premium Payment.