What energy2?

dozydave2

Hi

I have a 4 bed detached house with south facing roof.
Fully insulated.
Garden on slope approx 500sqm.
We cant get mains gas, dont want oil.
Have log burner but difficult ish access for regular use.

What suggestions for self sufficient power and heating budget £12-15k.
Appreciate any ideas and advise.

Thanks

albyota

14 kW Panasonic Aquarea Air Source Heat Pump for £7k minus £850 RHPP grant, and 3 kWp Solar PV £8K.

FITs from SPV approx £1,170 / yr
RHI from next October, If they ever announce the rate.

House must be well insulated, cavity and roof and draught free with good double glazing.

dozydave2

Hi Thanks for quick reply.
Sorry what is:
FITs from SPV approx £1,170 / yr
RHI from next October, If they ever announce the rate.?

Do you have this setup or sell it?
Is air source just for heating or can it do hotwater ?
Would I have to door underfloor heating?

albyota

Sorry dozydave2,

SPV stands for Solar Photovoltaic or PV for short, FIT's stands for Feed In Tarrif, a payment made by the licienced FIT providers, energy companies like E-on, EDF, British Gas, Scottish & Southern etc... for generating carbon free electricity and feeding it back in to the grid.

The current FIT tarrif is 43.3p/kWh generated, a typical 3kWp system can produce around 2,600kwh/yr (more in the south, less in the north), so 2,600 x 43.3p = £1,125 plus about 40 quid for 50% (1,300kWh/yr) exported, plus you would save a little by not buying in so much, (£60).

The FIT's tarrif is index linked to the RPI, and is tax free and payable for 25 years.

The RHI (Renewable Heat Incentive) is similar to the FIT's in that, it is proposed, that a payment may be made for heating your house with renewable technologies, (biomass boiler, CHP, Ground source, Air Source etc..) although the details have not yet been ratified or announced.

A RHPP (Renewable Heat Premium Payment) of £850 is available for installing an ASHP as long as you meet the criteria http://www.energysavingtrust.org.uk/Generate-your-own-energy/Sell-your-own-energy/Renewable-Heat-Premium-Payment which is available until 31st March 2012.

Yes I do have this set up, I have 16 x 190 Watt Schott Mono black frame panels (3.04kWp) and I have the 8.5 kW Mitsubishi Ecodan air to water heat pump, it supplies heated water for the under floor heating (both floors) and all our domestic hot water (4 Bed Detached). A clear bright Sunshine day like today means by using the heat pump at midday for an hour to heat a tank of hot water, costs absolutely nothing, and the SPV earnt me £6.46.
Since May the PV system has clocked up £720.36p of which, I have already received a cheque for £578.

My whole house bill now (all Electric) is wiped out by the FIT's £1,170 FIT's in, Electric Bill £1,100 out.

And I did not get one single grant....:doh:

There are so many Heat pump manufacturers now, but you should research this in great detail, most systems use R410A as the refrigerant gas, which heats water to 55 degrees max, don't be fooled, if you see something that does higher temperatures, it will cost a bit more to run, the key to using radiators with heat pumps is to increase the radiators surface area, usually by swapping single panel rads for double panel rads, generally the heatloss and rad calcs taken usually point to upgrading living rooms, and bathrooms, so not a massive cost or upheaval, this way the system can be run at lower temps 45 degrees. If you do go down this route, find some local MCS installers, get at least three quotes and ask for references from their customers.