Help Choosing best system

[dijsil]

Hi, I am new to the solar panels and have got various quotes however am still undecided on which brand etc to go with and maybe someone can help me make the decision. Bdw I am from sicily and we have plenty of Sun and wind

Supplier 1 -

• Panels Offer: 8 panel RECOM 710-923W system producing up to 34 units/day.
  1. System description and cost
  · System Description: Qtyx8 RECOM 710-923W + HUAWEI-3.68KTL
  · System size: 5.68KWP –7.38KWp :
• Structure
• Total price: €7200

Brocures Panels : https://pdfupload.io/docs/3345092b + https://pdfupload.io/docs/786c6062
Invertor : https://pdfupload.io/docs/db20d7bd

Supplier 2
JA Solar / Huawei PV System. System Size in kWp 4.35
10 JA Solar 435w - 565w Panels - 30 year Warranty
3.6KTL-L1 HUAWEI Inverter - 10 year Warranty
Anodized Aluminium Structure for PV Panels
€6000

Panels : https://pdfupload.io/docs/b0d53ede
Invertor : https://pdfupload.io/docs/611df181


Supplier 3
LONGi LR8-66HGD610M *8 panels
SUNGROW SH3.6RS inverter
structure
€6147

Invertor: https://pdfupload.io/docs/24d52a44
Panel: https://pdfupload.io/docs/70a7111b

Supplier 4:

Huasun 930 Watts (720W front 210W back) * 8
Renac Single Phase N1-HV-3.68 or Huawei SUN2000-3.68KTL-L1 1 10 Years Product Warranty
Renac TB-H1-11.23 or Huawei Luna2000-10SO
€14800 - however this includes the battery (but will consider the quote if the panels/invertor are better)

https://pdfupload.io/docs/6523bcb0

https://pdfupload.io/docs/fa62c07d

https://pdfupload.io/docs/4b20a1e5

https://pdfupload.io/docs/3aa6264d

[Rade]

You have not mentioned how much power your home consumes and what you would like out of a solar architecture. Let's start there.

[dijsil]

I use around 12-20 units per day. I will be putting all generated electricity to the grid and then the units consumed will be reduced from the total number of units sold to the grid.

I checked some specs through chatgbt and seems like supplier 1 has the best panel out of all

[Rade]

That sounds reasonable!

Where I live, we talked to a lot of our neighbors who were implementing solar through various vendors, and looked at a lot... a LOT of YouTube videos about the various vendor products. What I determined from those conversations and videos were that I wanted one vendor who supported all the hardware they were installing. It made problem determination a lot easier through the settling-in process. We also got a pretty good warranty on the system (10-20 years across the various components).

The best piece of advice I got from these forums: Patience. You are essentially installing a generic computer in your home - the inverter. The unit we have runs the vendor code on a Raspberri-Pi CPU. The unit (here) came preloaded for the greatest common denominator for an installation configuration specifications the vendor supports, and then the vendor tuned and tweaked it over the course of 8 or so months after initial power up. You can expect to see panels go off-line, throw errors, etc. Normal settling as the code gets balanced for your installation. With the exception of one panel that cracked early on (caused by installer wiring inspection to ensure it was code and not PVLink issues), every issue was resolved from the vendor remotely by adjusting the code in the inverter. Our vendor was on top of each of the problems from the get-go; all I had to do was call/text it in if I saw an error light on the inverter. We have been in operation since May of last year, and our last code-related outage was this time last year; so about a good 12 months without a hitch.

Best of luck on your installation!

[dijsil]

I am getting everything from the same supplier, panels/invertor and installation so that I dont have issues like what you said. With regards to warranty I am sure that probably after 10 years its not worth keeping the panels and would make probably more sense replacing the panels/invertor with a more efficient equipment. Supplier are saying that return on investment is around 3.4 yrs + probably around adding another year since I need to build a metal structure to put the panels even more elevated.

What exactly is the raspberri pi for ?

[Rade]

Raspberri Pi is a small-factor CPU that is used in a lot of "Internet of Things" devices; specifically tailored for remote management of systems, more than likely running a for of Linux. I am retired from 36 years in Information technology and cyber security, that and I was shoulder-surfing the tech when he had out inverter open...

[organic farmer]

... I am sure that probably after 10 years its not worth keeping the panels and would make probably more sense replacing the panels

I see local systems that have been in continuous use for 30 years.

I do not see why you think it would make 'sense' to replace every ten years.

... return on investment is around 3.4 yrs + probably around adding another year since I need to build a metal structure to put the panels even more elevated.

Keep in mind that every penny spent on Solar Power is 100% tax deductible. [depreciated over seven {7} years].

[J.P.M.]

I see local systems that have been in continuous use for 30 years.

I do not see why you think it would make 'sense' to replace every ten years.





Keep in mind that every penny spent on Solar Power is 100% tax deductible. [depreciated over seven {7} years].

Two things to comment on:

Over the years you have consistently misinformed readers and members that all solar is tax deductible. I suppose you state that because that's that case for your situation as a farmer in the U.S.
Most people in the U.S. that have solar energy systems on their property do not do so as a business.
Federal and state tax credits and other incentives are available for residential homeowners with PV systems but to say: "every penny spent on Solar (sic) power is 100% tax deductible" is not correct for most U.S. PV owners.
Sometimes it is as a business expense. For most homeowners, it is not. To say it is deductible for tax purposes is at best incorrect and at worst deceptive.
Furthermore, even if PV systems, equipment and service were to be universally tax deductible in the U.S., that would only reduce taxable income, and reduce the tax due at most at the highest marginal rate for the tax payer.
That is, even if a deductible expense, it would NOT be a 1:1 credit against the cost of the equipment.

All this is probably of no consequence to the OP anyway as it seems the OP stated (s)he's from Sicily.

[dijsil]

Raspberri Pi is a small-factor CPU that is used in a lot of "Internet of Things" devices; specifically tailored for remote management of systems, more than likely running a for of Linux. I am retired from 36 years in Information technology and cyber security, that and I was shoulder-surfing the tech when he had out inverter open...

I am an IT guy too, and am still trying to understand why could be usefull in running one of these, the huwawei invertor can be connected to the internet to monitor it (I try to keep things as simple as possible to avoid having to go home and solve issues there too hahaha)

[Rade]

I am an IT guy too, and am still trying to understand why could be usefull in running one of these, the huwawei invertor can be connected to the internet to monitor it (I try to keep things as simple as possible to avoid having to go home and solve issues there too hahaha)

Because... it's a thing. And everyone has to use a thing.

[dijsil]

I see local systems that have been in continuous use for 30 years.

I do not see why you think it would make 'sense' to replace every ten years.





Keep in mind that every penny spent on Solar Power is 100% tax deductible. [depreciated over seven {7} years].

My neighbor installed his panels around 10 yrs ago and he is getting maximum of 17 units maximum on a very good day since they are quite old now. Panels nowadays are getting up to 32 units per day (I am speaking in terms of amount of space used since they are higher in wattage and are using same roof space)