Ductape wrote:
Fred, roof space is a limitation for some of us. I need all the power I can get in a limited footprint.
With limited roof space, you want to make sure that you are not putting the panels to close to the A/C unit or creating other shadows. MPPT is the way to go to get the most amperage when you are limited in solar panel wattage due to space considerations.
Still it is all a dollars equation, same as anything else.
You also want to check the square inches on one panel, and compare it to another. You want the highest watts per square inch that you can get (for a reasonable price), and stay away from flexible panels that only have about 1/2 the watts per square foot of crystal panels.
Good luck,
Fred.
