How Many Photovoltaic Solar Panels do you need For Your Solar Powered Home?

To guesstimate the dimensions of your solar array, you will have to know:

The quantity of Watt-hours you intend to produce in twenty four hours.

Identifying your Watt-hours goal is the vital part in designing your system. If you intend to tie your solar array to the grid to offset your costs, start by having a look at your electric bill for the kilowatt-hours you use in a month. If you won’t be hooked up to the grid and you may, in reality, be producing all of your own electricity, the Watt-hours or kWh number becomes even more crucial. If you’ve got the patience to live off-grid, then you definitely have the tolerance to finish a loads list.

If you do not know how many Watt-hours you need to produce, stop here. Go and have a look at this book How to Build a Solar Panel which will tell you in detail how to calculate your electrical power requirements.

There’s no guessing you can do without that basic building block of knowing your energy consumption.

Insolation is a funny word for the amount of hours in a day that a solar panel will produce its rated voltage. While all of the day’s sunlight counts toward this total, not only the brightest hours, not every daytime hour counts the same.

When the sun is low in the sky, a solar panel facing it does not produce as much energy as it would at midday. An alternative way of putting it might be to assert that if you crammed all of the day’s daylight into equivalent hours of top sunlight, you’d have the sun hours, or insolation, number.

In your neighborhood, while the sun could be up for ten hours in a Feb day, not all that light is powerful enough to be counted at full worth, so the insolation price in your neighborhood may be nearer to two sun hours. In our calculations, we use average insolation values taken from years of info collection. Insolation varies by location as well as by month. If you are arranging an all year solar electrical system, the yearly average insolation value will give you a good place to begin for your estimation. If you only plan to use the array seasonally, then use the insolation values for those months only.

Take a look here if you want to know exactly how to calculate your energy needs how to build a solar panel.


2 Comments on How Many Photovoltaic Solar Panels do you need For Your Solar Powered Home?

  1. Cooper on Sun, 26th Jun 2011 7:11 pm
  2. Having lost my money back when the banks and stocks supposed to have lost trier’s I’m learning to live on, Limited income. There for I’ll be building my own system. I’ve always been interested in all thing old and new. As in this project, I’ve committed to the project and am in the process of squiring knowledge. As I understand there is cells that work on light, Which cell supplies the most power?

  3. Hitesh Sheth on Tue, 19th Jul 2011 1:19 pm
  4. we are Hong kong base company I am looking for some technical support as we are new in this business we have huge requirement in India so looking forward for technical support.

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