Bob,
Quite often the deciding factor on what solar panel to use is the physical size you have available.� You need to have the voltage of the panels add up to 48V to match the battery bank, so you could do four 12V panels wired in series (plus to minus, plus to minus, etc).� Kyocera makes great panels that can be used for this.� So divide the space you have available on the canopy into 4, and see what will physically fit.� For example, the Kyocera 50W is just over 25" by 25", so if you have around 52" x 52" available, you could use 4 of them for 200W.�
http://www.altestore.com/store/Solar-Panels/1-to-50-Watt-Solar-Panels/Kyocera-KC50T-50W-12V-Solar-Panel-with-J-Box/p723/� Once you determine the panels you will use, you can decide which 48V charge controller to use.� For example, you could use the Morningstar ProStar,
http://www.altestore.com/store/Charge-Controllers/Solar-Charge-Controllers/PWM-Type-Solar-Charge-Controllers/Morningstar-Charge-Controllers-PWM/Morningstar-Prostar-PS-15M-48V-15A48V-Charge-Cntrlr/p786/.�
Once you know how much space you have, give us a call at the AltE Store and we can help you sort through your options.�
Amy
Solar Thermal Queen
AltE Store