- Apr 16, 2021
This.Rather than a motorized tracker, I think an array aimed South East and another aimed South West, wired in parallel to the MPPT, is a better way to go.
Extra panels are cheaper than a tracker for the watts they produce.
What is optimal depends on your energy needs. Squeezing out the highest energy production from an array may not be optimal in terms of the complexity and cost of such a system. Panels are pretty cheap and as a result the easiest and most practical answer is usually just adding more panels.
And having a fixed array pointing due South (or North in the Southern hemisphere) and tilted at the angle of latitude will produce the most energy in a given year for a fixed array, but again that configuration may not be optimal especially if peak outputs can't be used or energy supply earlier and/or later in the day is preferred.
Optimal production is production which best suits the use case. For many this means split azimuth arrays, usually with some combination of East, South (or North in the Southern hemisphere) and West facing panels.
Paralleling arrays with different orientations is perfectly fine. You just need to make sure each array in the parallel arrangement is the same size. e.g. I have 2 parallel arrays into one MPPT of my Fronius inverter. One 2.75kW array faces NE, the other 2.75kW array faces NW (I'm Southern hemisphere). Works very well.