Solar PV

Cardew

WTPooh wrote: »

All the rest seem to be saying I should be grateful with an ROI of 8-9% and that's it.

b)there is an unwritten industry cartel of "give the customer a 9% ROI and they will be grateful".:mad:

Without rehearsing all the discussions on the economics of PV systems, IMO we should be wary of talking about a ROI of x%.

If I invest, say, £12k in a Bank I will always have that £12k available plus what low rate of interest I have earned.

Invest £12k in a solar PV system and you have equipment on your roof!

So you are not comparing 'like with like' It is not until the accrued savings(FIT etc) are more than the £12k(plus interest) in the bank are you 'in profit'.

Personally I think buying a solar PV system is more like buying an annuity.

Not arguing against buying these systems, as they will make money in the long term.

WTPooh

Cardew - I agree, a depreciating physical asset generating income is not the same as a liquid cash asset generating income, however the term is used for normalising capital investments.

I did point out to several of them that they had no idea what my ROI would be because they had no idea what my cost of borrowing was - and so it was imposible for them to quote me an ROI figure.

Fortunately they were thick-skinned enough not to grasp that point or to realise that they were out of the bidding process by then, so they left amicably.

For the sake of argument and avoiding nuanced detail I've left out the cost of funding (i.e. interest charged or savings interest lost) in the ROI quoted previously of about 8-9%

Equaliser123

WTPooh wrote: »

Equaliser123 - I'd be interested in the company quoting that for you. Looking for a similar specified system.

.

Green Project. Same people as behind Tesco and M&S but have gone direct with them.

WTPooh

Equaliser123 wrote: »

Green Project. Same people as behind Tesco and M&S but have gone direct with them.

Interesting - My Tesco Quote came via the Mark Group,
markgroup.co.uk

I'll get the Green Project to quote too then !
greenprojectuk.com

Many thanks Equaliser123

zeupater

WTPooh wrote: »

Interesting - My Tesco Quote came via the Mark Group,
markgroup.co.uk

I'll get the Green Project to quote too then !
greenprojectuk.com

Many thanks Equaliser123

Hi

You'll probably find that your Tesco Quote was by Enact & Mark Group were their sub-contractor. I believe that the Green Project are simply Enact's own brand for the same offering ... effectively taking Tesco out of the loop (more profit).

I think that Equiliser123's price included a 10% discount which was on offer for a while a couple of months ago ?? (Equaliser123 ??/September ??) ..... last I heard was that the discount had been reduced to a fixed £500 and even that was withdrawn when all of the installers were trying to convince people to buy quickly in order to beat the 'rumoured' withdrawal of FiTs in the government's CSR ......

HTH

Equaliser123

WTPooh wrote: »

Interesting - My Tesco Quote came via the Mark Group,
markgroup.co.uk

I'll get the Green Project to quote too then !
greenprojectuk.com

Many thanks Equaliser123

Yes, it is the Mark Group who will be doing the install.

Equaliser123

zeupater wrote: »

Hi

You'll probably find that your Tesco Quote was by Enact & Mark Group were their sub-contractor. I believe that the Green Project are simply Enact's own brand for the same offering ... effectively taking Tesco out of the loop (more profit).

I think that Equiliser123's price included a 10% discount which was on offer for a while a couple of months ago ?? (Equaliser123 ??/September ??) ..... last I heard was that the discount had been reduced to a fixed £500 and even that was withdrawn when all of the installers were trying to convince people to buy quickly in order to beat the 'rumoured' withdrawal of FiTs in the government's CSR ......

HTH

Absolutely right.

daytona600_2

pretty expensive @ £9900
especially as they have specified the wrong sma inverter
either loss of yields ( outputs ) or could damage the inverter
depending on how system is connected together
inverters & modules must be co-ordinated together to offer
best yields & ouputs and for electrical safety


i assume 14 x sharp NU-E235E1 modules
you need either a sma sunny boy
SB3000HF-30 new transformer design for 2010
SB3000TL-250 transformerless

transformless offers best effciencies

see www.sma.de download sunny design
they only recommend 12 modules as a maximum

both more effcient than older SB3800 & have bluetooth for wireless display or pc/iphone/web interface or dataloggers
www.suntrol-portal.com & free apps on i-phones


also sharp 235wp mono , not top end product anymore with only 14.3% module effciency . most new mono & poly modules
offer better options these days to over 17%

look at 2010 premium products from the likes of
solarworld , kyocera , rec , sanyo , coenergy , aleo siliken etc
some even have better warranties as well of power output over 25 years and some offer postive power tolerance
they will better rated not +/- there rating eg 235Wp
but at a min of 235Wp or higher
if you are being charged per watt , make sure you are getting it

might cost a bit more , but installation will be same
will actually work out cheaper in the long run
as will higher effciency modules & inverters will produce more
yields therefore higher earnings over the next 25 years

Equaliser123 wrote: »

By way of example, we have ordered (install next week) 14 Sharp 235W panels (3.29 kwp) with an SMA 3800 inverter for £9,900.

daytona600_2

kd235 much the same outputs as sharp 235wp
both around 14% but poly modules work better
in cloudy/overcast/diffuse light conditions in the uk
but still will not work with SB3800 inverter

They have since come back and said that they will now be using Kyocer KD235GH-2PB panels[/QUOTE]

Equaliser123

daytona600 wrote: »

pretty expensive @ £9900
especially as they have specified the wrong sma inverter
either loss of yields ( outputs ) or could damage the inverter
depending on how system is connected together
inverters & modules must be co-ordinated together to offer
best yields & ouputs and for electrical safety

Thanks, but after getting 7 quotes, this is by far the cheapest. Where do you suggest would be cheaper than £3.2k per kwp?