cordeg Wrote:
Nov 19, 2013 9:16 PM
actually, not even close. i was doing this in 1979 on the roof of our lab, and the loss to drive the motor to move the panels was more than made up for by the additional energy generated -- and this was when panels were far less efficient as well as heavier than today (i.e., now the additional output would be higher and the loss from panel movement less). used a sensor to detect the optimal incidence angle and moved the panel to maintain proper orientation. moved just a nudge at a time every so often, so it wasn't like it was consuming power continuously.