Solar Panel Angles

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Solar Panel Angles

Postby paul_celia » Thu Dec 01, 2011 7:42 pm

Hi All

I asked a question recently regarding the roof angles for solar panels.

1 I live in the Bass Coast shire post code 3995
2 I have 2x 1Kw Strings going into one 2500 Kw inverter
3 My roof is facing due north with a pitch of 15 degrees

I was told the optium angle was 38 Degrees

Could any one tell me any of the following

1 What is my produtivity loss either in kWh or as a percentage per year

2 Could these strings be upgraded to the 38 degrees as recomended

3 What would be the approximate cost

Yours Paul

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Re: Solar Panel Angles

Postby bashworth » Thu Dec 01, 2011 7:56 pm

Here is a link on the basics of angles and efficiency.

http://www.anewhouse.com.au/?p=391

There is also a link on the page to a more detailed site
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Re: Solar Panel Angles

Postby Tracker » Fri Dec 02, 2011 12:06 pm

paul_celia wrote:1 What is my produtivity loss either in kWh or as a percentage per year
2 Could these strings be upgraded to the 38 degrees as recomended
3 What would be the approximate cost


I suspect tath there is a degree of fishing in your questions.
You have a 2Kw system, that would normally produce just 80% of that figure, at it's peak
The 15deg will cut back on that even more in winter.

We have no idea just how the panels have been installed, but I really can't see why it is not possible to add risers on the topside of each string.. It is not normally done because installers are generally DUMB, and just don't think.
The issue will be IF the strings are together, one above the other.. Then - you will have to watch for self-shadowing..
How much? No Idea, because it would need a general Re-Installation, probably with Elbows at the base and risers at the top.
..
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Re: Solar Panel Angles

Postby paul_celia » Fri Dec 02, 2011 4:26 pm

Hi Tracker

the panels are installed parralle with the roof ie 15 degrees
how could i get a photo of my foor to you

Paul

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Re: Solar Panel Angles

Postby Tracker » Fri Dec 02, 2011 5:26 pm

how could i get a photo of my roof to you

you can add it to a thread

I am still unsure of HOW they lie.. 12 in a line???

What is the roof construction?
..
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Re: Solar Panel Angles

Postby paul_celia » Fri Dec 02, 2011 6:50 pm

Hi Tracker

what the hecks a thread and how do i do it

Paul
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Re: Solar Panel Angles

Postby Smurf1976 » Fri Dec 02, 2011 7:50 pm

Thread means a topic / subject / question on a forum. For example this is a thread called "Solar Panel Angles" and all the other topics on this forum are also known as threads.

It's a generic term that applies to all forums, not just this one, and is unrelated to solar power itself.
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Re: Solar Panel Angles

Postby Gordon-Loomberah » Fri Dec 02, 2011 8:25 pm

paul_celia wrote:how do i do it


When you are editing your posting, use the Upload attachment tab at the bottom to upload and then "add the file". Use preview to make sure its there. Ideally it will be not too huge, say 800 pixels wide is fine, and in jpg format for a photo.
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Re: Solar Panel Angles

Postby paul_celia » Tue Dec 06, 2011 12:56 pm

100_3670.JPG
100_3671.JPG


Hi Tracker

Here are the photos we discussed the roof angle is 15 Degrees and facing due north
as you will see it is an iron roof.

again my questions are

1 Can these be lifted and set to the 38 Degrees optium angle
2 What would be my out put gain
3 What would be the cost involved

Yours Paul
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Re: Solar Panel Angles

Postby Tracker » Tue Dec 06, 2011 2:12 pm

.
Firstly - Is it my imagination, and do I only count 11 panels .. 6 left, 5 right?

The bottom line is that ANYTHING is possible..
Cost - Well, that depends on how interested the installer is to do the job.

I am thinking of aluminium angles being added top an bottom brackets, to alow a degree of pivoting, and then at the top, some heavy stainless straps to just extend the existing roof-mounts , to the Right Height..
..
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