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29-05-2019, 20:59   #46
unkel
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It was a particularly cheap batch of panels (no longer available), mono, but only 290W and I got it at trade discount, basically the price the SEAI installers pay their wholesaler
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29-05-2019, 21:15   #47
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I don't wanna discuss private matters on a public forum.

Less, starting a chase and hunting cheap,no name,discounted products either,bought at trade liquidation or even worse,from a solar plant deal that went wrong.
Some of the panels are failing the testing QA standards and are being throwed on the market at discounted rates with reduced or affected performance.
Or,din't fit the technical performance tests into a big solar farm and returned to dealer to be then "trade discounted" to end users.
Just to mention that I dont have any proves to prove it,in case i am being challenged, sorry.

Personal,i did my home work and years ago i found those LG panels to be premium as they were researched,designed & manufactured by LG.
They came with individual QA certificate, attached to each panel,with technical parameters certified.
Next batch,same LGs and same premium quality.
I have in total 15 LG panels that are happy harvesting for me.

Inverter, the ABB brand,is an industrial brand that can be trusted in any market or country.
Not mentioning it was the only one certified by Irish Grid parameters

Delivery "rather than colelction" it was not possible due to the fact that no Irish dealer had those products in stock or could order for me,whatever i wasnt able to do it myself.
They were offering some other brands that didnt inspired me confidence,all at that time.The truth, those unkown brands have become the normal selling units these days... But,the "know how" provided by the dealer were right on the spot and invaluable helpful.

I am living under the concept that "i'm too poor to buy cheap".
I could be right or i could be wrong .


If the PV panels,artificially being under commercial pressure by EU an China will have followed the same pattern as the EVs cars, now,we,here... will have been talking a different story these days...

Be good
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29-05-2019, 21:26   #48
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Less, starting a chase and hunting cheap,no name,discounted products either,bought at trade liquidation or even worse,from a solar plant deal that went wrong.


Not allowed to name names, but these came from an Irish wholesaler that supplies a lot of Irish developers and SEAI installers. Via via I was able to arrange the trade discount.

It was a big batch and it was sold out quickly because it was very popular with developers. Look at a new housing estate just built in the last few months, chances are it has the same panels that I have.
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29-05-2019, 21:42   #49
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Not allowed to name names, but these came from an Irish wholesaler that supplies a lot of Irish developers and SEAI installers. Via via I was able to arrange the trade discount.

It was a big batch and it was sold out quickly because it was very popular with developers. Look at a new housing estate just built in the last few months, chances are it has the same panels that I have.
Thanks.

I am proud that i am a pioneer in this market,today.
My LGs gave me 10MWh,10,000KWh today.

My EV car cost new almost 30k,bought it 4 years later at a fraction of the cost.
Do i feel sorry for the original buyer !?? Maybe, financially but i am sure he was aware of the issues with depreciation and really enjoy it the beauty of the innovative car, careless about money...

This is the price i have to pay in order to be the first "someone" to try something new or to enjoy the challenges. AND,to share the "know how" and how to avoid my errors,mistakes and do it better for the next one person,project or third party maybe.
More or less like you and me...
NOW, if you have access to inside intelligence and contacts with direct trade channels,opposite to us retail clients, then we can see the huge mark-up the dealer,installer,fitter has as per your own posts above. Even worse,saying that an inverter or a panel comes at this price as purchased by you, gets everyone around here scratching their heads and breaking keyboards and mouse on ebay trying to match your best prices... well, can't you agree with me saying that , well that is ... a bit false and wrong and disrespectful !?
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29-05-2019, 21:51   #50
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NOW, if you have access to inside intelligence and contacts with direct trade channels,opposite to us retail clients, then we can see the huge mark-up the dealer,installer,fitter has as per your own posts above.
The markup between retail and wholesale prices is tiny, dude. Depending on the wholesaler, it's about 10-15%
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29-05-2019, 21:53   #51
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Find the invoice for your inverter yet, rolion? If you demand from others to prove what they were saying was the truth, you need to do same in return.
Please find attached my inverter Irish grid certification,validation and the quality report.
May i challenge you respectfully again to attach your compliance and QA certificate inverter purchased of ebay, please !?
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29-05-2019, 22:34   #52
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Dude, it's a Solis 4G dual MPPT current version. Probably the most commonly installed solar inverter in Ireland by SEAI installers

Spec sheet is here. Note that is the website of the biggest solar wholesale provider in Ireland
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11-06-2019, 16:35   #53
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Quick question.

I can fit 4 panels on my main roof facing east. A max of 3 facing west on the opposite side. The West side is harder to access and will not be serviceable by me without scaffolding etc.

I can fit an additional 3 across the flat roof facing east but they will begin to be overshadowed at around 4.45pm by the main house. If I put a 4th panel on the flat roof then this will sit behind the first 3 so the time for overshadowing will decrease by around an hour. From what I understand so far If I do 2 parallel strings of 4 panels then I can use a simple single string inverter and when the shadowing starts the shaded parallel string will just stop producing. If I remember correctly this has to be the same number of panels as the main roof.

I have yet to cost the mounting system cost of the Console+ and ballast for the flat roof but all other costs are easy and DIY on the flat roof
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11-06-2019, 21:43   #54
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Kind of lost you without a picture,a visual reference...

If shadowing is a big issue,is that Summer or Winter times ?
Keep in your mind that Sun travels across sky and designs a diferent curvature every day / month...
You may have the shadow at 4pm Summer and at 2pm in the Winter,which kind of fckus up your plans...

Trying to use most panels on the east or west makes no logic with our weather patterns and without a tracker.
Puting more in the East to get most of the morning light makes sense but what if the weather is overcast and no Sun at all until...well,until in afternoon when it beats the West side of the roof / panels !??

Best compromise,fit as many as you can price wise and coverage THEN get these little devices H E R E, a TIGO optimiser.
That will increase the cost of the project...

Good luck and i share your pain in the back shadow of the panel...
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11-06-2019, 21:51   #55
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I would probably choose not to install any panel that would get shade at any time of the day. But if I had to, I would use Tigo optimisers for every panel in the string that has at least one panel that gets shade. Not cheap though, if you have a string of 4 panels and one gets shadow, this will effectively well over double the price of that shaded panel. Or in other words, that panel will never pay for itself. Also these things won't last as long as the panels and when they fail, you will need to go back up on your roof. As I said, personally I wouldn't fit any panel that would get shade.
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11-06-2019, 21:59   #56
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any idea what an optimiser costs. single vs dual panel. I wonder if its more economical to use two single string inverters and leave the mppt do its thing for each string instead. if location is an issue or a dual string inverter

Attached is my east facing. My main roof east can fit 4 panels west can only fit 3 panels and south 1 or 2.

West and south are hard to access for me and if I use a roofer then will most likely require scaffolding etc. But east is likely that a roofer would just use a ladder so may be more cost effective.
Attached Images
File Type: jpg House east facing 4 panels 4.30pm.jpg (191.7 KB, 15 views)

Last edited by phester28; 11-06-2019 at 22:08.
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11-06-2019, 22:07   #57
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Better image but still no ideea how the Sun does his works over a day or a month !

I'll do it East and West on same input on the inverter.
Leave South on the other input, as it will get longer exposure / harvesting time across day time.

East,you can fit 7 panels in landscape mode.
Cannot see for South ,guess easy 6 or 8.
West, as well,7 panels easily.

Smarter,i will do:
7 panels x 330W on East = 2.4Kw
2 x 20 solar tubes on the South side with a 300L cylinder
7 panels x 330W on West = 2.4Kw

You get grants for both of them and very good value,as efficency,Return and grants...
i know,plannig permission,screw that,wait until some complains and then apply for retention in 12 months time.(do not take it as an advice).
You dont need scaffolding,i can easily get on the roof from the back of the house... just play safe !

Good luck... doing it cheap is doing it twice, same thing again !

Last edited by rolion; 11-06-2019 at 22:13.
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11-06-2019, 22:16   #58
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I wish there was that much space on my roof. The only company to respond to my inquiries so far has confirmed that I can fit 4 max east and 3 max west.
The 4 are 3 in portrait and one in landscape. They said south only 1 but I think 2 can fit there. This is trying to comply with the SEAI 500mm exclusion on the perimeter too but it might cut short on some of my angles.

Post 33 has my 3 aspects. Each tile you can see is 300mm wide by 250mm high
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