Opinion on an estimate of photovoltaic panels

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mamily27
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Opinion on an estimate of photovoltaic panels




by mamily27 » 14/05/09, 13:02

Hello,
I have just received a quote for the installation of photovoltaic sensors composed of:
2970Wc kit
photovoltaic modules SHARP 168p - 165 Wc power 165 Wc
H07 RNF 4 mm2 cable assembly for module / inverter connection
box of sectionnionnement direct current entered inverter
batch of connectors multi contact
inverter ONIUS IG 30 max performance 94,3% dimensions 366 * 344 * 220 mm
20 v protection box with lightning protection
for 16 896 € HT
Integrity Package Héotoiture (18) 168P6 6 165 Wc
for 2 597,76 € HT
labor package for 2 600 HT
warranty extension of the inverter to 10 years for 380 € HT
The sensors will be installed on both sides of the solar panels in place
If you have an estimate on this estimate it would arrange me.
Thank you in advance
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elephant
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by elephant » 14/05/09, 13:23

well, regardless of what our friends think about the "artificial" interest of photovoltaics, I will say this:

This is a "blah" offer: I am surprised that we still offer monocrystalline at 165 Wp and if it is small white diamonds, I hope that they are not visible from the street, otherwise, bêêêêk! )

It may be to make a price, but 7,9 euros to Wc, there should be way to do better: play the competition and take your time.
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mamily27
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by mamily27 » 14/05/09, 18:00

the attached documentation indicates that this is a polycrystalline silicon photovoltaic module with a nominal power of 162 w
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by Christophe » 14/05/09, 18:10

Play concurrency? Not easy they line up all ...

I wonder what the quotes would be without the subsidies ...

Here we could know by returning a little in the past ...

Elephant do you have info on it? What was the cost of photovoltaic Wc in 1995 for example? If you have the answer, I would correct to get € 2008 ...
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by elephant » 14/05/09, 18:56

no idea, it was the time when I was not really interested in it: not profitable.

At the level of competition, I made a small intervention a few weeks ago on the art of playing with the nerves of the representatives:

1) minimum 4 quote
2) take your time
3) inquire about wholesale prices
4) require hyper detailed quotes, refuse to charge you trainees and trainees 30 euros per hour.
5) carelessly leave one or two false quotes on the table
6) go see prices in the forums
7) talk about the future installation of his friend and brother-in-law: Mrgreen:
8) negotiate the price according to the installation time

etc ....
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by Christophe » 14/05/09, 18:58

+ 10! Or rather ... + 8 : Cheesy:

Elephant these different points deserve to make a new subject entitled: "Quote: learn to negotiate" or something like that ...

I think we had already talked about it no?
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by elephant » 14/05/09, 19:19

I would organize many expensive seminars :D money quickly recovered : Mrgreen:
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by elephant » 14/05/09, 19:21

mamily 27 wrote:

the attached documentation indicates that this is a polycrystalline silicon photovoltaic module with a nominal power of 162 w


what dimension?
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by mamily27 » 15/05/09, 09:53

1 318 * 994 * 46 mm per module. there are 18's planned.
each module being formed of 48 155,5 mm2 polycrystalline silicon cells in series
maximum voltage 1 000 V DC
NOMINAL POWER 162 W
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by Obelix » 15/05/09, 10:07

Hello,

I find these specifications technically to the limit of the scam and very expensive for the material provided!
For my part I would rather use amorphous or CIGS which are much more efficient in this kind of installation.
Example:
SCHOTT Solar ASI 95 Wp
http://www.energiebau.de/fileadmin/user ... ASI_fr.pdf
The icing on the cake: the price => 348 Euros piece including all taxes. For 30 panels it should be around 10.000 Euros including VAT.

For the rest of the installation, "specialists" should also find less expensive positions with equal technical quality!

Obelix
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