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Best solar panel angle

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Posted by Gymy Bob on January 21, 2005, 12:17 am
What is the general best angle to point your solar panels horizontally for
best power output daily? This is with no tracking and a fixed position.

I figure about where the sun is at 2:00 PM but this is only in the winter.
Does this vary from season to season.

Are there charts or calculations posted somewhere online?

How much difference will tracking make?

What is a good tracking system source?

Are there cheaper ways to set up tracking systems?


Posted by George Ghio on January 21, 2005, 6:45 am

Pointing at the sun at noon.

Yes it varies with the seasons and the angle will depend on you latitude.

Have a look at www.susdesign.com

Depends on the tracker. 0 to 30 or 40% when the tracker works. Trackers
also increase the number of things that can go wrong. i.e. moving parts.

I spend a lot of time with these problems. Because of this I am not keen
on their use.

Suggest you talk to Duane Johnson. One of the few here who would know.

Posted by Bernd Felsche on January 21, 2005, 10:44 am

And altitude.
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Posted by Miguel Gimenez on January 21, 2005, 11:02 am
 Bernd Felsche wrote:

The variation of angle with altitude is about 0.004 degrees from sea
level to ten kilometers over the poles, I think he can neglect this.

Best regards
Miguel Gimenez

Posted by nicksanspam on January 21, 2005, 11:50 am

Wrong again. Pointing slightly below noon elevation makes more daily energy,
with more ground reflection and a higher average incidence angle cosine.


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