Tariffs and payments: Non-Domestic RHI
The following is a summary of the latest RHI information. For more details please refer directly to the Ofgem website:
Payments
The Non-Domestic RHI provides financial support for renewable heat technologies for 20 years. Payments are made on a quarterly basis.
Once you’re accredited, a tariff level will be assigned to your installation based on its technology (eg biomass, heat pump, solar) and size. Payments will be made based on the actual heat output of the installation. They begin to accrue from the date of accreditation of the installation.
Tariff rates are set by the Department for Business, Energy and Industrial Strategy (BEIS). You can find the current tariff tables below.
Changes to the Non-domestic RHI regulations
As of 1 October 2018 the Non-Domestic RHI regulations:
- allow participants of the RHI scheme to replace their accredited installation under certain circumstances. The aim of this change is to enable participants whose plant may break down to replace their plant and stay on the same tariff for the remainder of their participation in the scheme.
- change the circumstances under which ‘estimated data’ can be submitted
- clarify that all RHI installations must have the necessary environmental permits and must continue to comply with all local and national laws including those related to the environment.
The tariff boundary between Tier 1 and Tier 2 for small, medium and large biomass is raising from 15% to 35%. Please see the table for new tariffs.
BEIS has confirmed that there will not be a tariff degression on 1 July 2019.
Tariffs that apply for installations with an accreditation date on or after 20 September 2017 –
Updated Q4 2019/20
| Tariff name | Eligible technology | Eligible sizes | Tariffs |
| Small commercial biomass | Solid biomass including solid biomass contained in waste from 20 September 2017 the tiering threshold for small and medium biomass will change from 15% to 35% of heat load. From this date, large biomass will move from a single, untiered tariff to a tiered tariff with the same 35% threshold. | Less than 200 kWth Tier 1 | 3.11 |
| Less than 200 kWth Tier 2 | 2.18 | ||
| Medium commercial biomass | 200 kWth and above & less than 1MWth Tier 1 | 3.11 | |
| 200 kWth and above & less than 1MWth Tier 2 | 2.18 | ||
| Large commercial biomass | 1MWth and above tier 1 | 3.11 | |
| 1MWth and above tier 2 | 2.18 | ||
| Solid biomass CHP systems (commissioned on or after 1 April 2016) | Solid biomass CHP systems | All capacities | 4.51 |
| Water/Ground-source heat pumps (commissioned on or after 1 April 2016) | Ground-source heat pumps & Water-source heat pumps | All capacities Tier 1 | 9.56 |
| All capacities Tier 2 | 2.85 | ||
| Air-source heat pumps (commissioned on or after 1 April 2016) | Air-source heat pumps | All capacities | 2.75 |
| Deep geothermal (commissioned on or after 1 April 2016) | Deep geothermal | All capacities | 5.49 |
| All solar collectors | Solar collectors | Less than 200 kWth | 10.98 |
| Biomethane injection | Biomethane | On the first 40,000 MWh of eligible biomethane Tier 1 | 4.86 |
| Next 40,000 MWh of eligible biomethane Tier 2 | 2.86 | ||
| Remaining MWh of eligible biomethane Tier 3 | 2.21 | ||
| Small biogas combustion | Biogas combustion | Less than 200 kWth | 4.74 |
| Medium biogas combustion (commissioned on or after 22 May 2018) | 200 kWth and above & less than 600 kWth | 3.72 | |
| Large biogas combustion (commissioned on or after 1 January 2019) | 600 kWth and above | 1.18 |