Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some quotes

[exon16m]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

EPC Done and ok, have managed to get into the price range I hoped for the installation with large firms torn between two.

What are the views of:

Canada solar panels and Aura one power inverters

Vs

Mitsubishi panels and Fronious inverter

 

[Gavin A]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

surely you've not got a quote of 6k for mitsubishi panels?

not that they're necessarily any better than the next, but they were eye wateringly expensive last time I looked, for no particular reason that I could see. I guess they must have seen sense and cut their prices.

both inverters are good inverters, but in a barn I'd want to make sure you got the outdoor version for the aurora

 

[babba]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

If someone offered me a 4Kw system for 6K I would run away and thats on a concrete pantile roof.

 

[exon16m]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

both on check a trade have between 100-200 reviews and score nearly over 9.5-perfect 10 from their customers (not sure if you can make this up? and reporting bias).

mitsubishi panels were a bit more of a premium extra £1.5k over the installation.

what are the views of the panels

1) are they "good"
2) is it worth the extra to go for mitsubishi panels

 

[SolarCity]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Have they checked voltage levels and the cable supplying the barns? Have you made sure you can get the full tariff on both installs?

Mitsubishi - overpriced. Canadian Solar - budget panel. No worse than Canadian Solar.

Aurora or Fronius. It depends. What model of Fronius inverter is it? Do you have any shading?

 

[exon16m]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

One new cable being run in. Other is up to the job. I have been assured as they are two separate addresses and meter numbers should not be a problem to be on the same roof and one person can have 10 feed in setups attached to them at different addresses?

power one - pvi-3.6-TL-OUTD (although it will be inside its own separate enclosed shed)
Fronius - IG TL 3.6

No over shade on this roof.

So nothing much in the panels both of a "good" quality ???

 

[SolarCity]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Not much to choose between the inverters. The Fronius will probably give you a slightly higher yield as it is slightly more efficient and will possibly be wired entirely on one string.

Not a lot to choose between the panels in terms of quality in my opinion. If you tell me the pitch of your roof and orientation I will run both setups through PV Sol and see which yields the most.

If you're on a TT system then make sure you have a good enough earth. Also, it would be a good idea to get a voltage check done. If it is high then you may get problems.

 

[sedgy34]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Asbestos roof! 6k for Mitsubishi Install
your heading for a massive fall see you later when your back on here saying is there anyone near me to sort my problems out please my systems don't work!!!!! The company I used were 9 out of 10 on Check a trade now they have had my money and they are 9 out of see you later!!:auto:

 

[exon16m]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Not much to choose between the inverters. The Fronius will probably give you a slightly higher yield as it is slightly more efficient and will possibly be wired entirely on one string.

Not a lot to choose between the panels in terms of quality in my opinion. If you tell me the pitch of your roof and orientation I will run both setups through PV Sol and see which yields the most.

If you're on a TT system then make sure you have a good enough earth. Also, it would be a good idea to get a voltage check done. If it is high then you may get problems.

thank you for your offer:

Roof is 20-25 deg and in a SSW orientation no shade if the angle makes a difference in that range I can remeasure and work the trig.

both are using a separate ring fenced account and are with the REA and assure me protected. Deposit is low and happy if I want to pay on credit card for the deposit so 2x protected.

Not seen the TT abbreviation what does this mean

 

[SRE]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Exon16m - it seems you have done well. You've taken all the expertise on the forum for free and then screwed the installers that charge more because they bother to understand what they do rather than provide a "wham bam thank you mam" system that your original installers were going to provide you with.

I for one won't provide you with free information, I'm as keen to help out as the next person, but as many say without a site survey it's almost impossible. I'd suggest you go with an installer who knows what he is talking about rather than finding the cheapest and then taking the knowledge from the forum to make sure the cheap installer does it right, it's a recipe for disaster unless you're a pv spark - in which case you'd be installing your own, possibly on the forum providing your hard earned support to other customers and installers :wink5:

 

[sedgy34]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Post 53

 

[exon16m]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Exon16m - it seems you have done well. You've taken all the expertise on the forum for free and then screwed the installers that charge more because they bother to understand what they do rather than provide a "wham bam thank you mam" system that your original installers were going to provide you with.

I for one won't provide you with free information, I'm as keen to help out as the next person, but as many say without a site survey it's almost impossible. I'd suggest you go with an installer who knows what he is talking about rather than finding the cheapest and then taking the knowledge from the forum to make sure the cheap installer does it right, it's a recipe for disaster unless you're a pv spark - in which case you'd be installing your own, possibly on the forum providing your hard earned support to other customers and installers :wink5:

Thats sounds a bit bitter, I am not going to resort to a defensive retaliation but I can read between the lines of your post.

Forums are a way communicating with each other, of spreading knowledge and helping each other out using expertise and experience. I am a new member of this forum but most forums are driven by the pleasure others receive helping people out. It would appear others on her are more in tune with this, and are not mealy picking up leads.

In this market of poor customer knowledge and quality variation there is high risk for the customer. Customer satisfaction, confidence and experience is the difference that separates sellers.

If I had the time I would look through you other posts on other areas of this forum and see if this was a one off comment or if you fit more into the sales only catogory

Thank you to all those who are / have helped me by sharing their wisdom

 

[Earthstore]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Maybe I should not offer my advice as you choose not to listen, but hey, what the hell do I know about PV?

Have you had a structural survey carried out, also are you having a specialist Company to drill the asbestos, and the legal scaffolding requirements are very different for your type of roof, as to having two systems on different MPAN's there are legal reasons why this may not be possible.

Do you know how easy it is to get a good score on check a trade, best you ask watchdog on that.

I am done here, but I do agree with SRE..,.

 

[babba]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Thats sounds a bit bitter, I am not going to resort to a defensive retaliation but I can read between the lines of your post.

Forums are a way communicating with each other, of spreading knowledge and helping each other out using expertise and experience. I am a new member of this forum but most forums are driven by the pleasure others receive helping people out. It would appear others on her are more in tune with this, and are not mealy picking up leads.

In this market of poor customer knowledge and quality variation there is high risk for the customer. Customer satisfaction, confidence and experience is the difference that separates sellers.

If I had the time I would look through you other posts on other areas of this forum and see if this was a one off comment or if you fit more into the sales only catogory

Thank you to all those who are / have helped me by sharing their wisdom

I think a lot of people on here have given you good honest advice and you are taking their advice the wrong way. You only have to read back the thread and the wealth of information and time given to you. The truth is not always what you want to hear.

 

[SolarCity]

Re: Barn installation needed 2x4kw on same roof ? asbesto in Sussex area need some qu

Okay, from the Canadian Solar option with Power One inverter for your location I get a yield of 3,650kWh

For the Mistubishi option with Fronius IG TL 36 inverter, I get a yield of 3,590kWh

To be honest, at a price of £6k I'd be very worried on a straightforward domestic install. For that price on your install I would say there must be something rotten in Denmark.

TT means Terra-terra and it is basically a description of your earthing arrangement. You will find that you have a high external impedance on this kind of install which means that they are often not a good idea for transformerless inverters.

One last thing I would mention is that you shouldn't underestimate the value of a good survey with a good design.