all_arable
Member
Finally passed through parliament today today 12.2p/kwh
Domestic rhi
- Thread starter all_arable
- Start date
Daniel
Member
- Location
- Mildenhall, Suffolk
Ive had a payment of £1300 for my air source heat pump which I understand will be deducted from any future payments. But how will they calculate how many kwh i'm using?
- Location
- N Ireland BT47
They will deem it, ie. guestimate how much energy you should be using. They do not want the possibility of anyone being subsidised to produce heat at less than the cost of production. For instance if the RHI payment is 12,2p/Kwhr and the heat costs you 8p/Kwhr to produce, the government do not want you claiming too much. Only senior civil servants and MPs are allowed to screw the system, us lesser mortals must obey the rules.
NavitasBen
Member
- Location
- Somerset
they will substract the £1300 in equal proportion from each RHI payment. Quarterly payments for 7 years = 28 payments, so you will have (1300/28 = £42.43) £42.43 deducted from each quarterly RHI payment.
- Location
- Montgomeryshire
It will be taken from the Green Deal Assessment that you need to have done, which will include a figure on your heat requirement (based on your 'habitable area' if you haven't had it done yet and there is room to make the outbuildings habitable too
).
Daniel
Member
- Location
- Mildenhall, Suffolk
It will be taken from the Green Deal Assessment that you need to have done, which will include a figure on your heat requirement (based on your 'habitable area' if you haven't had it done yet and there is room to make the outbuildings habitable too
Too late, I've had one done to claim the initial payment.
It says my space heating demand is 8379kwh per year, and my water heating is 2310kwh per year. I take it that isn't much, especially as they sold me the system and insulation based on how efficient it was!
- Location
- Montgomeryshire
Ouch! I take it you have full insulation all round, etc? My space heating was 23,823 kWh and water 2935 kWh, and I didn't realise until after that I should have maximised any available 'habitable' space. We have loft insulation and a couple of double glazed windows, but a old listed house (a split farmhouse, so essentially a 3 bed semi) in a conservation area. Not much that they could say needed to/could be done to improve efficiency.
Daniel
Member
- Location
- Mildenhall, Suffolk
It was built in 2012, 150mm of celotex in the roof. Blockwork, airgap, 125mm celotex, airgap, plasterboard in the walls, 75mm celotex in the floor then a screed. It cost about £900 to heat and light last year, 130m2 3 bed chalet bungalow, with a wood burner.
Maybe I should have skimped on the celotex!
Maybe I should have skimped on the celotex!
- Location
- Montgomeryshire
But at least your heat & light bill is half of mine. I'm going to need the extra RHI to allow me to keep heating the night sky.
- Location
- Montgomeryshire
Info on the domestic RHI scheme, if anyone's interested.
https://www.ofgem.gov.uk/ofgem-publications/87121/essentialguideforapplicantsweb.pdf
https://www.ofgem.gov.uk/ofgem-publications/87121/essentialguideforapplicantsweb.pdf
- Location
- Montgomeryshire
From the above link....
"Anyone who owns a heating system or resides
in the property it’s installed in can apply for the
Domestic RHI. You’ll be asked to select which type
of owner you are, from owner-occupier, registered
social landlord or private landlord, and the
questions we will ask you will vary accordingly."
custard
Member
- Location
- scottish borders
Does anyone know of a 6okw logburner with MCS accreditation for domestic RHI ? or is 45kw the biggest ? thanks.
- Location
- Montgomeryshire
If you follow the OFGEM link I posted above, there is a link to a list of MCS accredited boilers, according to manufacturer & technology. That would narrow down to a list of log burners to start searching.
NavitasBen
Member
- Location
- Somerset
MCS certification only goes up to 45kW, which essentially caps domestic RHI installations at 45kW.
custard
Member
- Location
- scottish borders
Thanks Neilo, that's that answered
custard
Member
- Location
- scottish borders
But you could install, say, 2 x 30kw MCS accredited boilers to give a larger capacity
NavitasBen
Member
- Location
- Somerset
If they were installed separately, yes. If installed on the same system the "installed capacity" would be greater than the 45kW threshold and wouldn't be eligible. One registers an "installation" with MCS, rather than the boiler(s).
custard
Member
- Location
- scottish borders
Check your product
There is no limit on capacity, the size of your system
in kilowatts, but systems must be certified by the
Microgeneration Certification Scheme (MCS) or an
equivalent scheme
This is from the ofgem essential guide as posted by Neilo above, I can not find the '45kw limit' ?
There is no limit on capacity, the size of your system
in kilowatts, but systems must be certified by the
Microgeneration Certification Scheme (MCS) or an
equivalent scheme
This is from the ofgem essential guide as posted by Neilo above, I can not find the '45kw limit' ?
NavitasBen
Member
- Location
- Somerset
45kW is the limit for MCS certificate registrations.
From http://www.microgenerationcertification.org/about-us/scheme
"...MCS covers electricity generating technologies with a capacity of up to 50kW, and heat generating technologies with a capacity of up to 45kW."
You need an MCS certificate to apply for the domestic RHI, and you can't get an MCS certificate for a boiler over 45kW. Herego, above 45kW it will be impossible to get RHI accreditation.
From http://www.microgenerationcertification.org/about-us/scheme
"...MCS covers electricity generating technologies with a capacity of up to 50kW, and heat generating technologies with a capacity of up to 45kW."
You need an MCS certificate to apply for the domestic RHI, and you can't get an MCS certificate for a boiler over 45kW. Herego, above 45kW it will be impossible to get RHI accreditation.