Solar Panel Performance vs Panel Tilting
The following chart reflects solar panel performance for Denver, CO for the Summer Solstice on 6/20/16. The calculations are based on the USNO sun data which includes sun elevation and azimuth. The so...
Forum Discussion
CA Traveler wrote:
Summer tilting makes little difference and leaving he panels flat is close to optimal. And panel azimuth makes virtually no difference.
I'm working on the winter charts where tilting is very beneficial. Also advancing the panel azimuth can help compensate for those noon clouds. :)
I chose Denver not for the weather but because it's about mid latitude for the lower 48.
I disagree that tilting doesn't make a difference in the summer. Further south, likely, but up north, it does. Not near as much as fall/winter/spring but it does.
I see about 20% increase in output in the summer between a flat panel and one tilted properly at 45 degrees north.
Easy way to set panel optimally
hold a empty TP or paper towel tube perpendicular on the panel
Adjust for zero shadow.
Done.
If I'm not around for the day, I set it for ideal around mid day.
