about
the domestic Renewable Heat Incentive
what is it?
The Domestic Renewable Heat
Incentive (Domestic RHI) is a government financial incentive to promote the
use of renewable heat. Switching to heating systems that use naturally
replenished energy can help the UK reduce its carbon emissions.
People who join the scheme and
stick to its rules, receive quarterly payments for seven years for the amount
of clean, green renewable heat their system produces.
who's it for?
The scheme is open to anyone
who can meet the joining requirements (from July 2009). It‘s for households both off and on the
gas grid. People off mains gas have the most
potential to save on fuel bills and reduce carbon emissions.
two schemes: domestic & non-domestic
The Renewable Heat Incentive
has two schemes - Domestic and Non-Domestic. They have separate tariffs,
joining conditions, rules and application processes. Ofgem administer both.
Each application can only be to one of the schemes.
the domestic RHI
Key to joining is that the
renewable heating system heats only a single property which is capable of
getting a domestic Energy Performance Certificate (EPC) . The EPC is the proof Ofgem
needs that the property is assessed as a domestic ‘dwelling‘. Without
one, you won‘t be able to apply and can‘t join the scheme.
An EPC gives information about
a property‘s energy use, plus recommendations on how to reduce energy and
save money. It‘s required every time you buy, sell or rent a property. It‘s
included as part of a Green Deal Assessment, which is a requirement for most
to join the Domestic RHI.
the non-domestic RHI
Generally, if the renewable
heating system is in commercial, public or industrial premises, then you
would apply to the Non-Domestic RHI. This can include small and
large businesses, hospitals, schools, and organisations with district heating
schemes where one heating system serves multiple homes.
where it‘s more complicated
If your property set-up doesn‘t
quite fit into standard descriptions, or if your renewable system supplies
heat to more than one building, it can be more difficult to decide which
scheme to apply to. (ie if you have a granny annex or holiday home) Or, if
you‘d be eligible to join either.
Generally:
- properties with a home office
within a house that has, or can get a domestic EPC, should be eligible for
the Domestic RHI.
- properties with annexes attached to the house
are normally covered by one domestic EPC and should be eligible for the
Domestic RHI.
- properties with a main house and a self-contained outbuilding (with its own bathroom and kitchen), both heated by a renewable heating system, would normally have an EPC for each. They would not be eligible for the Domestic RHI.
- properties with a main house and other outbuildings all heated by a renewable heating system may not be eligible for the Domestic RHI.
For more information, see Ofgem‘s key terms explained: Domestic RHI
eligible heating systems in the domestic Renewable Heat Incentive
To be able to apply to the Domestic RHI you will need to check that your renewable heating system is one of the types eligible for the scheme and that it‘s a make and model that meets specific technical requirements. All Samsung air-source heat pumps are eligible. There are four eligible renewable heating system types. These are:
- air-source heat pumps
- biomass only boilers and biomass pellet stoves
- ground source heat pumps
- flat plate and evacuated tube solar thermal panels
RHI step-by-step
1. research potential technologies
2. contact Green Deal Assessor (gdorb.decc.gov.uk)
3. receive EPC
4. installer designs and installs MCS-accredited system
5. payments begin after registering scheme with OFGEM
tariff and potential income
DECC have stated that tariffs will be reviewed
quarterly , however once you sign up to a tariff, then it is
guaranteed for seven years. These figures below are based on a three bedroom
detached house with an area of 277sqm with an annual space heating demand of
15,308kWh/year. Even though a demand of 16,500kWh/year is the figure Ofgem
deem 'typical', we feel that the awareness of the the importance of
airtightness, insulation and the use of a heat recovery ventilation system, has
reduced the 'typical', demand. Installation costs do vary significantly
depending on the size of the system so this is an average cost just for materials.
TECHNOLOGY
|
TYPICAL
COST
|
TARIFF
(p/kWh)
|
TYPICAL
ANNUAL PAYMENT
|
ASHP
|
£7,000
|
10.85
|
£1,100
|
Biomass
Boiler
|
£12,000
|
6.97
|
£1,000
|
GSHP
|
£12,000
|
21.16
|
£2,200
|
Solar
|
£4,000
|
21.36
|
£310 |
|