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Renewable Heat Incentive
The Renewable Heat Incentive (RHI) launched November 2011 to provide financial assistance to non-domestic generators of renewable heat, and producers of renewable biogas and biomethane in England, Scotland and Wales. On 2013 the domestic RHI was announced, to open in Spring 2014.

Domestic RHI lunched

The domestic RHI has been launched on 9th April 2014.

For more information visit the Ofgem website pages on the Domesic RHI

An introduction to the domestic RHI schemeAn introduction to the domestic RHI scheme
A factsheet from Ofgem (PDF - 89 kB)

Approved Suppliers list

The domestic RHI opened for the first time in spring 2014. As part of the change, if they are not a self-supplier, domestic users will have to demonstrate that they have bought fuel from the Biomass Suppliers List (BSL). For installations of less than 1MWth self-supplying their own fuel there will be a simplified procedure for inclusion in the list. Recipients of the non-domestic RHI can use the approved supplier list or may submit quarterly sustainability reports to OFGEM.

In practice, this will mean that the vast majority of fuel suppliers wishing to supply fuel into RHI funded markets will need to become "approved" and on the BSL. This includes submission of data on: greenhouse gas emissions, and compliance with scheme "Land Criteria".

Register as a biomass supplier
Link to the official website for registration on the RHI Biomass Suppliers List.
Press release concerning launch of BSL 30th April 2014
Biomass Suppliers List service
Information on the Biomass Suppliers List, including guidance for consumers.
New biomass sustainability requirements for the RHINew biomass sustainability requirements for the RHI
Updated Sept 2014 information on the sustainability requirements for RHI biomass. (PDF - 295 KB)
Biomass sustainability requirements for the domestic RHIBiomass sustainability requirements for the domestic RHI
Updated Sept 2014, information on biomass sustainability requirements for the domestic RHI. (PDF - 252 KB)
Timber Standard for Heat & ElectricityTimber Standard for Heat & Electricity
Timber Standard to set out how the Sustainable Forest Management Criteria will apply to the use of woodfuel under the Renewable Heat Incentive and Renewables Obligation, published by DECC. (PDF - 320 kB)
New RHI sustainability requirements info sheetNew RHI sustainability requirements info sheet
Information sheet from DECC on the new sustainability requirements for recipients of the RHI (PDF - 263 kB)
New domestic RHI biomass sustainability requirements info sheetNew domestic RHI biomass sustainability requirements info sheet
Information sheet from DECC on the new sustainability requirements for recipients of the domestic RHI (PDF - 252 kB)

GHG emission reporting

as part of the scheme, suppliers will need to estimate the amount of carbon dioxide emitted while felling and processing biomass fuels and must be "compliant by autumn 2014" the current calculation tool is available to download from the OFGEM website.

Land Criteria

The land criteria are essentially the same as the CPET, in that all wood sold as fuel to RHI funded boilers must be both "legal" and "sustainable". Evidence to show that these criteria are being met can be in one of two categories:

Category A

Category A, is evidence that timber used to produce fuel is part of an existing certification and sustainability chain of custody, such as FSC, PEFC, or Grown in Britain.

Category B

Category b, is other forms of documentation that show that the timber used has come from a sustainable and legal source. In material coming from forestry, this is usually a felling licence issued by the Forestry Commission (in England, and Scotland) or by Natural Resource Wales. For timber that has come from other sources, or is from an activity that is exempt from felling licences (e.g. recycled material or arboricultural arisings) other forms of evidence may be used. CPET have a dedicated helpline (01305 236 100) and email address ( For enquiries on documentation required.

All timber must be reported by spring 2014, and complaint by spring 2015

Key aspects of the domestic RHI
Announced July 2013 
  • Flat rate: 12.2p/kWh for biomass
  • Seven years of payments
  • Payments based on estimated heat demand from an Energy Performance Certificate.
  • Metering not required, but 200 per year extra incentive if metering and monitoring package installed.
  • MCS accreditation and performance standards required, including emissions limits.
  • Green Deal Assessment required.
  • Not available to new build properties except self-build.
Non-domestic RHI tariffs
The tariffs for the non-domestic RHI are subject to quarterly review and potentially degression if expenditure, either in total or on a specific technology, exceeds thresholds. Tariffs for the coming quarter are published on the Ofgem website.
Key aspects of the first (2011) phase of the RHI

  • Only non-domestic installations will be supported
  • The first phase of the RHI will not include deeming: payments will be based on metered heat
  • Support for biomass will be broken down into size class: Small biomass (<200 kWth) medium biomass (>200 kWth - 1 MWth) and large biomass (>1 MWth).
  • For small and medium scale biomass there will be a tariff breakpoint at 1314 peak load hours p.a. Below this small biomass will receive 7.9p/kWh, increasing to 8.3p/kWh from 1st April 2012 and to 8.6p/kWh from 1st April 2013, and medium biomass will receive 4.9p/kWh, increasing to 5.1p/kWh in 2012 then 5.3p/kWh from 1st April 2013, while above this both will receive 2.0p/kWh, increasing to 2.1p/kWh in 2012 then 2.2p/kWh from April 2013. Large biomass receives a flat rate of 1.0p/kWh, which remains unchanged
  • Payments will be made quarterly and the tariff duration is 20 years
  • Eligible renewable heat equipment installed since 15th July 2009 will qualify for support under RHI
  • There will be some support for households under the Renewable Heat Premium Payment
  • It is intended that parliamentary approval be obtained July 2011 and the scheme introduced thereafter
  • Heat from Anaerobic digestion is also covered, at 7.1p/kWh, but only for systems less than 200 kWth

Phase 1 of the Renewable Heat Incentive (RHI) opened to applications on Monday 28th November 2011.

Please visit the DECC website at There is also further information on the Ofgem website, at

For information about the Northern Ireland RHI visit the NI Direct website at:

The Ofgem accreditation line is open on 0845 200 2122, 9:00-17:00 Monday to Thursday and 9:00-16:30 on Friday. Alternatively you can email them at

Renewable Heat Incentive on the DECC website
Page on the DECC website on the RHI. Includes details and links to key documents and supporting material.
RHI Guidance from DEFRA - Emission limits for total particulate matter and oxides of nitrogenRHI Guidance from DEFRA - Emission limits for total particulate matter and oxides of nitrogen
(PDF - 60 kB)
Renewable Heat Incentive

Ofgem page on the RHI.

DECC press Release on RHI
Press release 10th March 2011
Renewable Heat Incentive Scheme FAQs. Provided by DECC (PDF - 140 kB)
BEC RHI Calculator v6.2BEC RHI Calculator v6.2
An Excel Spreadsheet based calculator from the Biomass Energy Centre to allow the RHI payments and savings from a (non-domestic) woodfuel boiler installation to be estimated. (Updated 18th February 2014 to include new tariffs from 1st January 2014 Excel spreadsheet (xlsx 76 kB)
BEC RHI Calculator for Northern Ireland v2.0BEC RHI Calculator for Northern Ireland v2.0
A version of the RHI calculator incorporating the tariffs in Northern Ireland as oat 1 April 2013 (xlsx - 75 kB)
PPG Update Note 045 - The Renewable Heat IncentivePPG Update Note 045 - The Renewable Heat Incentive
Summary of RHI prepared by Policy and Programme Group, Forestry Commission England (PDF - 105 kB)
Details of the RHI released 10th March 2011

The scheme will be introduced in two phases.

In the first phase, long-term tariff support will be targeted in the non-domestic sectors, at the big heat users - the industrial, business and public sector which contribute 38% of the UKs carbon emissions. Under this phase there will also be support of around 15 million for households through the Renewable Heat Premium Payment.

The second phase of the RHI scheme will see households moved to the same form of long-term tariff support offered to the non-domestic sector in the first phase. This transition will be timed to align with the Green Deal which is intended to be introduced in October 2012.

RHI Premium Payment

Although domestic households will not be able to benefit from the tariffs in the first phase of the RHI, they will be eligible for support under the Premium Payments until the second phase of the RHI is launched in October 2012.

The Renewable Heat Premium Payment will be worth around 15m and will support up to 25,000 installations. A key focus will be for people living off the gas grid.

A scond phase of the RHPP was announced on 27th March 2012, expanded to 25m, and now includes community schemes.

Back to Grants and supportBack to Grants and support
The Microgeneration Certification Scheme
The Microgeneration Certification Scheme (MCS) is an independent scheme that certifies microgeneration products and installers in accordance with consistent standards. It is designed to evaluate microgeneration products and installers against robust criteria providing greater protection for consumers.

MCS certification of both equipment and installer was required for grant support under the Low Carbon Buildings Programme, and is required for equipment of 45 kW and below to receive payments under the Renewable Heat Incentive