Solar Panel installation quotation

zeupater

jetski690 wrote: »

Hi I've just got into reading about the solar panel fit stuff and wonder if someone could answer a couple of questions please,
1. My bungalow has a loft conversion and in the summer upstairs is always mega hot would by having solar panels on the roof attract even more heat upstairs or could they work the otherway and actually defuse the heat away slightly ?
2. Do people think it might be worth waiting say untill the later part of next year to do an install where the latest technology may have moved on a little and the prices may have come down a tad or are prices likely to stay up or even rise ?

Hi

If you have an 'on roof' system fitted the panels will effectively shade the part of the roof which they cover and therefore reduce the direct insolation. As the panels should be mounted on the roof plane which currently has the greatest thermal solar gain, the addition of the panels will help cool the loft conversion.

Regarding price movement, the current trend seems to be downwards. We are starting to see reports of 4kWp systems being installed for £13k on this forum & elsewhere, whilst the standard UK price for a system of this size since last spring seems to be £14.5k from a number of sources. So far this year european spot prices for european manufactured panels have fallen by over 11% and inverters by around 30%, which suggests that it is likely that the list prices of £14.5k are due around a 10% reduction early next year, therefore in line with the £13k prices being reported. At £13k there is still a very hefty margin being added by UK wholesalers and/or installers which would continue to position UK pricing well above levels available in more mature markets such as Germany.

Regarding technology, it is likely that panels will continue to become marginally more efficient in terms of kWp/m2 and this is likely to be at a price premium, however, if you have room for say a 4kWp system (around 30 square metres of panels/40 square metres of roof) would it really make sense to spend considerably more on a system which covers 25sqm ?

HTH

jetski690

Thanks Zeupater for info :beer:

daytona600_2

PV Modules are designed to work in artic to deserts
and are tested under iec/tuv in very large ovens and baked

uk loft temperatures would not be as bad as 25 years in a oz

high tempertures might cause cheaper inverter some problems
like derating there outputs
but just stick them outside if they are waterproof on the roof

prices will go down as with most products
if we all waited for lower prices no one would ever buy a tv/pc
but remeber feed in tarrifs will reduce by approx 7% per annum
from 2012 for newly installed system until 2035
FITs will last 25 years
as the uk is a decade behind germany and others
tarriffs always start very high to encourage people to fit them
but always get lowered over time
as more systems are installed especially as large pv farms come
on stream in the uk to 5,000kwp with 1000s of pv modules
or as happened this recently in spain , government reduced them
by 45% as its broke , but spanish market dwarfs the uk
germany also is reducing payments but single installations have more
pv than the whole of the uk
if you fitted them years ago you still got a very good deal

and if we get a large early take up on pv/wind/tidal/biomass etc
we don,t have to stop burning & importing fossil fuels
which will run out anyway and we will have to build fewer nuclear power stations with there legacy for the next couple of centuries
for future generations
pv came from space as its the only power you can get in outer space and used to costs fortunes , but most are still running after
40/50 years as people buy it , prices will continue until
it reaches grid parity - when renewables are actually cheaper than fossil fuel power stations

jetski690 wrote: »

Hi I've just got into reading about the solar panel fit stuff and wonder if someone could answer a couple of questions please,
1. My bungalow has a loft conversion and in the summer upstairs is always mega hot would by having solar panels on the roof attract even more heat upstairs or could they work the otherway and actually defuse the heat away slightly ?
2. Do people think it might be worth waiting say untill the later part of next year to do an install where the latest technology may have moved on a little and the prices may have come down a tad or are prices likely to stay up or even rise ?