You'll only collect the total insolation if you use two-axis solar panel pointing. Fixed panels are less efficient. Depending on latitude, sometimes much less e

You'll only collect the total insolation if you use two-axis solar panel pointing. Fixed panels are less efficient. Depending on latitude, sometimes much less efficient: http://physics.ucsd.edu/do-the-math/2012/08/solar-data-treasure-trove/ http://physics.ucsd.edu/do-the-math/2012/08/solar-data-treas...