The following webinar provides calculations in three dimensions.
"Introduction to Small-scale Photovoltaic Systems (including RETScreen
case study)" In addition, power on the inverter output circuit ay be
determined by measuring w/m2 and the temperature of the module and
calculating the power in the the BOS power loss equation
In addition, if you wish you choose to request to join the Ground and
Pole Mounted Solar Energy Systems Group, ... if the interest would be
specifically with ground and pole mounted solar energy systems.