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With Government incentives and enhanced captial tax allowances there has never been a better time to invest in renewables.  The information below gives a snap shot of your options with links for more detail.  To discuss the implications for your individual project please do contact us.    

Renewable Heat Incentive (RHI)

The RHI is a UK Government funded payment to encourage investment in specific renewable heat generating technologies.  Ofgem administer the Scheme, and payments are linked to the Consumer Price Index and vary according to the technology, heat generated, size of the system and tariff rate. There is a Non Domestic and Domestic Scheme, and Glendevon Energy have customers across Scotland that are delighted with their returns from both these schemes.   

Biomass boilers, ground source heat pumps and air source heat pumps are all eligible, amonst others.  As are retro fitted systems, new builds and properties on and off the gas grid.   Highlights of the schemes, with tariff examples are given below.  

DECC review the tariffs and take up quarterly. When the budget is exceeded it may trigger a tariff digression.    To view the Ofgem information on tariffs, and to view the tariff tables click here.   To view DECC's factsheet on tariff reductions (digression) click here.

For biomass systems, owners need to use an approved fuel.  Either you need to register your own fuel supply, or your supplier needs to confirm that they are approved.  To register click here

The following information is Glendevon Energy's interpretation of information from the Department for Business, Energy and Industrial Strategy (BEIS), Ofgem and the Energy Savings Trust.  For your own interpretation and up to date information see  Any contractual relationship for the RHI will be between the owner and scheme administrator.  To confirm your property's eligibility we strongly suggest you contact Ofgem: by emailing or telephone 0845 200 2122.

Domestic RHI

The scheme is open to owner-occupiers, private landlords, Registered Providers of Social Housing, third party owners of heating systems and self-builders. It is not be open to new build properties other than self-build.

The financial support is paid quarterly, to the owner of the heating system, for seven years.

Typically payments are made based on a 'deemed useage' rate, as established in the property's Energy Performance Certificate (EPC).  Each technology has an annual kWh 'cap', known as 'heat demand limit', after which Domestic RHI is not paid.  

The scheme supports air source heat pumps (Only Air to Water ASHP), biomass systems, ground source heat pumps (GSHP) and solar thermal technologies. The support rates vary depending on the technology installed.

The scheme is compatible with the Home Energy Scotland Renewables Loan Scheme. This enables homeowners to take out an interest free loan for up to £10,000, for up to 75% of the total cost of the systems.  Solar, biomass and heat pump systems can all be eligible, with differing repayment timescales and funds available for different technologies. Applications will be approved on a first come first served basis, and projects must not start until written confirmation of the loan is received.  Contact Home Energy Scotland for further information on 0808 808 2282.  To check for the most up to date information click here.  

In order to apply for the Domestic RHI you need an Energy Performance Certificate (EPC).  To find an assessor click here

For Ofgem's introduction to the Domestic RHI click here.  For Ofgem's Essential Guide for Applicants click here.  For Ofgem's frequently asked questions click here.  

Domestic Tariffs from 20 September 2017 (BEIS announced no digression 1st January 2018)

  • Biomass boilers:  6.54 pence per kWh (based upon the deemed usage in the EPC).   
  • Air source heat pumps: 10.18 pence per kWh (based upon the EPC and system efficiency)
  • Ground source heat pumps:  19.86 pence per kWh (based upon the EPC and system efficiency)
  • Total payments would be based on (7 years) x (tariff) x (deemed kW useage per year)
  • If any new tariff changes are to be made due to degression, the next announcement by BEIS would be expected by 1 March 2018

Heat Demand Limits

  • Biomass boilers: 25,000 kWh/ annum
  • Air source heat pumps:  20,000 kWh/ annum
  • Ground source heat pumps:  30,000 kWh/ annum

Non-Domestic RHI

Non-domestic applications include commercial, public sector and not-for-profit organisations. This includes bed and breakfasts and multiple dwellings sharing the same heat source.

Payments based on actual heat usage, system size and tariff. Tariffs can see a significant return on investment.  Installations must be heat metered with RHI compatible meters. Systems up to 45kW only must be MCS registered.  

Compatible with Home Energy Scotland (Energy Savings Trust Scoland) small business loans: 5% interest rate if also collecting RHI, from £1,000 to £100,000, repayable over 8 years. For detailed information click here. Or call Home Energy Scotland on 0808 808 2282 and ask to speak to a business advisor. 

Non-Domestic Tariffs from 20 September 2017 (BEIS has announced on 30 November that there will be no degression on 1 January 2018

We aim to keep this information accurate and up to date, however to view the latest BEIS announcements click here, and for Ofgem information click here

Ground Source Heat pumps


Tier 1:  9.09p per kWh of heat pump size for the first 1,314 hours per annum

Tier 2:  2.71p per kWh for every kWh produced after that

Air Source Heat pumps                     

2.61p per kWh of heat pump size for the first 1,314 hours per annum

Small Biomass
up to 200kW


Medium Biomass

200 kWth and above & less than 1MWth

Tier 1:  2.96p per kWh of boiler size for the first 1,314 hours per annum

Tier 2:  2.08p per kWh for every kWh produced after that


Tier 2.96p per kWh of boiler size for the first 1,314 hours per annum

Tier 2:  2.08p per kWh for every kWh produced after that 

Any contractual relationship for the Non-Domestic RHI will be between the owner and scheme administrator.  To confirm your property's eligibility we strongly suggest you contact Ofgem by emailing or calling  0300 003 2289.


Energy Saving Trust Scotland (EST) Loans

Resource Efficient Scotland SME loans are available to Small and Medium sized businesses, private landlords and not for profit organisations.  The loans are up to £100,000 and when combined with FiTs or RHI have a fixed interest rate of 5%.  For further information click here.  

Home Energy Scotland operate a Renewables Loan Scheme which offers homeowner's an interest free loan of up to £10,000 towards the cost of installing a renewable energy system.  For further information click here.  

Enhanced Capital Allowances

Enhanced Capital Allowances (ECAs) are a straightforward way for a business to improve its cash flow through accelerated tax relief.  The ECA scheme provides businesses with 100% first year tax relief on their qualifying capital expenditure.  The Energy Technology List (ETL) specifies the energy saving technologies that are included in the ECA scheme.  For further information please click here.


Contact our team on 01577 840579 or email to discuss how Glendevon Energy can discuss your requirements