Calculating Distance Between Rows to Avoid Shading Issues

[Bodacious]

Good day group,
I am having some issues when it comes to calculating the distance between rows to avoid shading issues. Some forumla sayDistance (D)= Sin(fn(latitude, altitude) + tilt angle) * Height / Sin(fn(latitude,altitude).
Another says
distance = height/ tan(altitude)@ solar noon
yet another saids at least 3 time the height.
Can someone help clearify this for me please.
Thanks in Advance

[Mike90250]

I'd build a model ! Best I can offer.

[Naptown]

I do it with a cad drawing

[vinniethePVtech]

The conservative laymens method to calculating shading variables north of equator.
Take the measured height of object from grade base (Y)
Take the height of panels (Z) subtract (Y) from (Z)
North direction is (2)
East and West are (1.5)
This is calculated for the worst case winter scenario. It happens to be the most conservative.
((Y)-(Z)) X 2 = A
((Y)-(Z)) X 1.5 = A

I use this shading calculation consistently for every commercial project I do, you can't go wrong with a dummy proof equation. Especially when you need quick answers.