Tariffs and payments: Non-Domestic RHI

Payments

The Non-Domestic RHI provides financial support for renewable heat technologies for 20 years. We make payments on a quarterly basis. As long as you’ve correctly sent us the information we require, we aim to pay you within 30 working days from the time we receive it.

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.

How the Retail Prices Index (RPI) and Consumer Prices Index (CPI) affect tariffs

Tariff rates are adjusted annually, in line with the relevant price index.

Please note:

  • Applications submitted before 1 April 2016 have their tariffs adjusted in line with the Retail Prices Index (RPI).
  • Applications submitted on or after 1 April 2016 have their tariffs adjusted in line with the Consumer Prices Index (CPI).

For more details, see Guidance Volume 2, Chapter 6.

Non-Domestic RHI tariff rates

The tariff tables below are the 2017/18 rates for the Great Britain scheme and are displayed in pence per kWhth. Please contact us, if you want to see rates prior to January 2013.

Latest tariff announcement

No degression: January 2018

BEIS has announced on 30 November that there will be no degression on 1 January 2018.

Tariffs that apply for installations with an accreditation date on or after 20 September 2017

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
2.96
Less than 200 kWth
Tier 2
2.08
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
2.96
200 kWth and above & less than 1MWth
Tier 2
2.08
Large commercial biomass

1MWth and above

Tier 1

2.96

1MWth and above

Tier 2

2.08
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.29
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.09
All capacities Tier 2 2.71
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.61
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.22
All solar collectors Solar collectors Less than 200 kWth 10.44
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

3.20

Next 40,000 MWh of eligible biomethane
Tier 2

1.89

Remaining MWh of eligible biomethane
Tier 3

1.45

Small biogas combustion Biogas combustion Less than 200 kWth 2.88
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 2.26
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 0.86

Tariffs that apply for installations with an accreditation date on or after 1 July 2017 and before 20 September 2017

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
2.71
Less than 200 kWth
Tier 2
0.71
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
4.79
200 kWth and above & less than 1MWth
Tier 2
2.08
Large commercial biomass 1MWth and above 2.08
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.29
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.09
All capacities Tier 2 2.71
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.61
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.22
All solar collectors Solar collectors Less than 200 kWth 10.44
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

3.20

Next 40,000 MWh of eligible biomethane
Tier 2

1.89

Remaining MWh of eligible biomethane
Tier 3

1.45

Small biogas combustion Biogas combustion Less than 200 kWth 2.88
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 2.26
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 0.86

Tariffs that apply for installations with an accreditation date on or after 1 April 2017 and before 1 July 2017

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
2.85
Less than 200 kWth
Tier 2
0.75
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.32
200 kWth and above & less than 1MWth
Tier 2
2.31
Large commercial biomass 1MWth and above 2.08
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.29
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.09
All capacities Tier 2 2.71
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.61
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.22
All solar collectors Solar collectors Less than 200 kWth 10.44
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

3.56

Next 40,000 MWh of eligible biomethane
Tier 2

2.10

Remaining MWh of eligible biomethane
Tier 3

1.61

Small biogas combustion Biogas combustion Less than 200 kWth 3.20
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 2.51
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 0.95

Tariffs that apply for installations with an accreditation date on or after 1 January 2017  and before 1 April  2017

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
3.00
Less than 200 kWth
Tier 2
0.79
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.32
200 kWth and above & less than 1MWth
Tier 2
2.31
Large commercial biomass 1MWth and above 2.08
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.29
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.09
All capacities Tier 2 2.71
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.61
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.22
All solar collectors Solar collectors Less than 200 kWth 10.44
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

3.95

Next 40,000 MWh of eligible biomethane
Tier 2

2.33

Remaining MWh of eligible biomethane
Tier 3

1.79

Small biogas combustion Biogas combustion Less than 200 kWth 3.37
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 2.64
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 1.00

 

Tariffs that apply for installations with an accreditation date on or after 1 October 2016  and before 1 January 2017

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
3.15
Less than 200 kWth
Tier 2
0.83
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.32
200 kWth and above & less than 1MWth
Tier 2
2.31
Large commercial biomass 1MWth and above 2.08
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.29
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.09
All capacities Tier 2 2.71
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.61
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.22
All solar collectors Solar collectors Less than 200 kWth 10.44
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

4.39

Next 40,000 MWh of eligible biomethane
Tier 2

2.58

Remaining MWh of eligible biomethane
Tier 3

1.99

Small biogas combustion Biogas combustion Less than 200 kWth 4.50
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 3.53
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 1.32

Tariffs that apply for installations with an accreditation date on or after 1 July 2016 and before 1 October 2016

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
3.31
Less than 200 kWth
Tier 2
0.87
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.32
200 kWth and above & less than 1MWth
Tier 2
2.31
Large commercial biomass 1MWth and above 2.08
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.29
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.09
All capacities Tier 2 2.71
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.61
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.22
All solar collectors Solar collectors Less than 200 kWth 10.44
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

4.62

Next 40,000 MWh of eligible biomethane
Tier 2

2.71

Remaining MWh of eligible biomethane
Tier 3

2.09

Small biogas combustion Biogas combustion Less than 200 kWth 5.99
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 4.70
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 1.76

Tariffs that apply for installations with an accreditation date on or after 1 April 2016 and before 1 July 2016

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
3.68
Less than 200 kWth
Tier 2
0.98
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.32
200 kWth and above & less than 1MWth
Tier 2
2.31
Large commercial biomass 1MWth and above 2.08
Solid biomass CHP systems (commissioned on or after 4 December 2013)  Solid biomass CHP systems All capacities 4.29
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.09
All capacities Tier 2 2.71
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.61
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.22
All solar collectors Solar collectors Less than 200 kWth 10.44
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

5.44

Next 40,000 MWh of eligible biomethane
Tier 2

3.19

Remaining MWh of eligible biomethane
Tier 3

2.46

Small biogas combustion Biogas combustion Less than 200 kWth 7.05
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 5.54
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.07

Tariffs that apply for installations with an accreditation date on or after 1 January 2016  and before 1 April 2016

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
 
3.91
Less than 200 kWth
Tier 2
1.04
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

6.09

 

Next 40,000 MWh of eligible biomethane
Tier 2

3.58

Remaining MWh of eligible biomethane
Tier 3

2.76

Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 1 October 2015 and before 1 January 2016

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
4.34
Less than 200 kWth
Tier 2
1.15
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

6.77

Next 40,000 MWh of eligible biomethane
Tier 2

3.98

Remaining MWh of eligible biomethane
Tier 3

3.06

Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 1 July 2015 and before 1 October 2015

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
4.56
Less than 200 kWth
Tier 2
1.21
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors (accredited on or after 21 January 2013) Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

Next 40,000 MWh of eligible biomethane
Tier 2

Remaining MWh of eligible biomethane
Tier 3

7.51

 

4.41

 

3.40

Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 1 April 2015 and before 1 July 2015

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
6.09
Less than 200 kWth
Tier 2
1.62
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors (accredited on or after 21 January 2013) Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

Next 40,000 MWh of eligible biomethane
Tier 2

Remaining MWh of eligible biomethane
Tier 3

7.90

 

4.63

 

3.58

Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 12 January 2015 and before 1 April 2015

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
7.16
Less than 200 kWth
Tier 2
1.90
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors (accredited on or after 21 January 2013) Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane

On the first 40,000 MWh of eligible biomethane
Tier 1

7.90

Next 40,000 MWh of eligible biomethane
Tier 2
4.63
Remaining MWh of eligible biomethane
Tier 3
3.58
Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 1 January 2015 and before 12 January 2015

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
7.16
Less than 200 kWth
Tier 2
1.90
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors (accredited on or after 21 January 2013) Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane

All capacities

7.90

Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 1 October 2014 and before 1 January 2015

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
8.01
Less than 200 kWth
Tier 2
2.10
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors (accredited on or after 21 January 2013) Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane All capacities 7.90
Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 1 July 2014 and before 1 October 2014

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
8.85
Less than 200 kWth
Tier 2
2.33
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane All capacities 7.90
Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600 kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 28 May 2014 and before 1 July 2014

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
Less than 200 kWth
Tier 2
9.28
2.43
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1

200 kWth and above & less than 1MWth
Tier 2

5.37
2.33
Large commercial biomass 1MWth and above 2.10
Solid biomass CHP systems (commissioned on or after 4 December 2013) Solid biomass CHP systems All capacities 4.33
Water/Ground-source heat pumps Ground-source heat pumps & Water-source heat pumps All capacities                  Tier 1 9.17
All capacities Tier 2 2.74
Air-source heat pumps (commissioned on or after 4 December 2013) Air-source heat pumps All capacities 2.63
Deep geothermal (commissioned on or after 4 December 2013) Deep geothermal All capacities 5.27
All solar collectors Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane All capacities 7.90
Small biogas combustion Biogas combustion Less than 200 kWth 7.90
Medium biogas combustion (commissioned on or after 4 December 2013) 200 kWth and above & less than 600kWth 6.21
Large biogas combustion (commissioned on or after 4 December 2013) 600 kWth and above 2.33

Tariffs that apply for installations with an accreditation date on or after 1 July 2013 and before 28 May 2014

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
9.28
Less than 200 kWth
Tier 2
2.43
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.37
200 kWth and above & less than 1MWth
Tier 2
2.33
Large commercial biomass  1MWth and above 2.10
Water/Ground-source heat pumps  Ground-source heat pumps & Water-source heat pumps All capacities                 Tier 1 9.17
Tier 2 2.74
All solar collectors Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane All capacities 7.90
Small biogas combustion Biogas combustion Less than 200 kWth 7.90

Tariffs that apply for installations with an accreditation date on or after 21 January 2013 and before 1 July 2013

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
9.28
Less than 200 kWth
Tier 2
2.43
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.70
200 kWth and above & less than 1MWth
Tier 2
2.43
Large commercial Biomass  1MWth and above 2.10
Water/Ground-source heat pumps  Ground-source heat pumps & Water-source heat pumps All capacities                 Tier 1 9.17
All capacities Tier 2 2.74
All solar collectors Solar collectors Less than 200 kWth 10.54
Biomethane injection Biomethane Biomethane all capacities 7.90
Small biogas combustion Biogas combustion Less than 200 kWth 7.90

Tariffs that apply for installations with an accreditation date before 21 January 2013

Tariff name Eligible technology Eligible sizes Tariffs
Small commercial biomass Solid biomass including solid biomass contained in waste Less than 200 kWth
Tier 1
9.28
Less than 200 kWth
Tier 2
2.43
Medium commercial biomass 200 kWth and above & less than 1MWth
Tier 1
5.70
200 kWth and above & less than 1MWth
Tier 2
2.43
Large commercial biomass 1MWth and above 1.06
Small commercial heat pumps Ground-source heat pumps & Water-source heat pumps Less than 100 kWth 5.17
Large commercial heat pumps 100 kWth and above 3.79
All solar collectors Solar collectors Less than 200 kWth 9.90
Biomethane injection Biomethane All capacities 7.90
Small biogas combustion Biogas combustion Less than 200 kWth 7.90

How payments are calculated

You are paid a certain amount per kilowatt hour (kWhth) and calculations are made according to whether your system is designated “simple” or “complex”, or for applications submitted from 24 September 2013, 'standard' or 'multiple'.

For a simple system

Payments are calculated by multiplying the appropriate tariff by the amount of eligible heat generated in the relevant quarterly period. The formula is:

Payment = Tariff level x Heat generated by RHI installation

For a complex system

Once you have entered the meter readings and the three heat data figures required by the IT system on the Non-Domestic RHI Register, the ‘Eligible Heat Output’ (EHO) figure in kWhth will be calculated and displayed. This is the amount that will be multiplied by your tariff to determine the payment amount.

The formula to determine how many kWh have been produced is:

Eligible heat used on system  *  Heat generated by RHI Installation/Total heat generated on system

For a standard system

Installations using ‘standard’ metering for RHI payment purposes have two options for calculating the eligible heat output (EHO):

Option 1

Payment = Tariff Level x Heat Generated by RHI Installation (EHO)
(NB where there are NO Ineligible heat uses on the system)

Option 2

Payment = Tariff level x Eligible Heat Used by the RHI Installation (EHO)
(NB where there is NO additional ineligible heat generation plant)

For a multiple system

Installations using a ‘multiple’ metering arrangement have to submit:

  • the eligible heat generated
  • the eligible heat used
  • the total heat generated on the system or the total heat used on the system.

Option 1

Payment =
Tariff Level x Eligible Heat Used on System x Heat Generated by RHI Installation/Total Heat Generated on System

Option 2

Payment =
Tariff Level x Eligible Heat Generated by RHI Installation x Eligible Heat Used on System/Total Heat Used on the System

Payments for biomethane producers

Registered producers of biomethane have a separate payment calculation formula because heat is not generated in the biomethane injection process. For information see Guidance Volume 2, Chapter 6.

Scheme budget management (degression)

BEIS is responsible for the overall scheme budget. They provide regular updates on scheme expenditure and adjust tariffs accordingly to ensure the scheme does not breach its budget. See the links below for additional information published by BEIS.

Monthly deployment data

RHI mechanism for budget management: estimated commitments

More information about tariffs and payments

For more information about tariffs and payments see Guidance Volume 2, Chapter 6.

Publications and updates

  • Published: 30th Nov 2015
  • Guidance
  • 0 Associated documents
On 30 November 2015, DECC announced a 10% reduction to the biomethane for injection tariff and a 10% reduction to the small commercial biomass tariff.