# Homemade Solar System – Determining the Perfect Solar Panel Dimension

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## Homemade Solar System – Determining the Perfect Solar Panel Dimension

In my last couple of blog posts, I have been writing about homemade solar system. As it turns out, this is a good idea because it will reduce your home green energy system costs quite substantially.

A complete residential solar power system can be quite expensive. The bulk of the cost is in the solar panel. About 60 percent of the budget will be spent on the solar cells.

Now you know why making your own solar panel is such a big deal. It’ll save you tons of money.

## The Right Solar Panel Dimension

When we are making the solar module, how big should it be? For starter, you want to make a solar panel which can produce around 18 volts and have a power output of about 75 watts.

That said solar panel will be suitable to charge a typical 12V deep cycle a battery. To make the module, you will need 36 Photovoltaic (PV) cells.

Now, the question is how do you arrange the cells in the panel? There are 2 options you can choose.

1) 4 cells across x 9 cells down

2) 3 cells across x 12 cells down

Here’s how you get the right dimension for your DIY solar panel.

A typical solar cell is 3” x 6”. If you are using the 4 cells across arrangement, you will need at least 24” of width on the panel (6” x 4 = 24”).

For good measure, you want to have at least ¼” in between the rows, so add ¾” to the width (1/4” x 3 = ¾”).

Then add an inch on the right and left sides of the panel and you have 24 3/4 “. Lets round up to 25” for easy calculation.

Now, do the same math to get the height of the solar panel. Remember, 9 PV cells down.

Therefore 9 x 3” each, plus 8 spaces in between the cells x ¼” plus 3” to allow more spaces along the tops and bottoms of the panel for wiring the individual strings of cells together. Punch in the calculator and you will get 32”.

The right dimension for a 4 cells across x 9 cells down arrangement solar panel is 25” x 32”.

This dimension is necessary for you to make the substrate that you will be using to attach the PV cells to with liquid silicon.

## Building DIY Solar Panel Under \$100

Is it possible to make a solar panel for under \$100? Yes it is possible if you were to follow some specific instructions. To find out how to make an inexpensive solar module, check out the Power 4 Home guide.

The program will show you step-by-step with High Definition (HD) instructional videos on how to make a solar panel with a budget of only \$100. For more information, read the Power 4 Home review on this blog.

Related web pages:
1) Earth 4 Energy Scam – Is The Earth4Energy E-book A Fraud?

By | 2012-11-04T10:25:05+00:00 September 17th, 2009|DIY Solar Panels|6 Comments

1. David L. Mayrose October 21, 2009 at 4:00 am

Thanks for all of your information.

David

2. Terry January 16, 2010 at 7:34 am

You mentioned there are only two arraignments possible for the lay out of 36 solar cells. 4 rows of 9 or 3 rows of 12. My question is this why 6 rows of 6 are not possible.
Thank You

3. Will January 16, 2010 at 8:49 am

Hi Terry,

There is no fixed rules on the size or arrangement of the solar cells. 4×9 and 3×12 is the most common arrangement.

You have to take into consideration on the size of Plexiglass. If your solar panel is of non-standard dimension, it would be hard to find a standard size Plexiglass to cover it. Custom cut Plexiglass is more expensive.

4. Terry January 16, 2010 at 8:56 am

Thank you. I was just wondering why it is always 4×9 or 3×12, and now I know.

5. Del Denham March 1, 2010 at 2:39 am

Power4home seems to have a problem with the support end of the sys. so far with me, none . Del

6. Virgil Yeager November 21, 2010 at 3:05 am

I will be using a 24 volt 1200 grid tie inverter. How do I arrange cells to optomize 24 volts.