A few things to ponder upon first. The solar panel scan & do create shade but immediately under them I summer, it's not cool due to the radiant heat coming off the dark panels, you certainly want airflow under there to allow for air movement between the structure & the panels. If you build the structure with a Sloped Shed Roof set at the proper angle for your region you could then mount the standoffs & rails on that to mount your panels.
The tricky part... Metal roofs have a lot of advantages over other types. You could choose a White Roof and use Bi-Facial Panels (up to 450W) or regular panels at <350W. Mounting methods vary depending on the rack & rail system you are using, I used
Kinetic Solar mounting and it's great stuff for my mounting kit.
* Check out your angles here (bottom of page)
http://www.solarelectricityhandbook.com/solar-angle-calculator.html and that will help you to see the median angle (typically March & September)
* To work out degree angle to pitch (and a whole lot more) check it here:
Blocklayer construction calculators
Fixed or movable, well that all depends on your building design, how many panels, do you want to do tracking or not... Fixed is a set of compromises BUT with a good solar controller that can handle a bit of over voltage / over amperage, then you can do the over-panelling game to compensate for the "Bad Angle periods". WARNING, NOT ALL (many in fact) Have this capability ! Midnite Solar has HyperVOC in their controllers, see bottom of page:
Midnite Solar Then have a look at their KID controller, including the "complete kit" which is actually a good deal whenm you add up all the extras included and none of it cheapo stuff. TBH, a failure in the bee-house could kill them all, do you want to cheap out on this ? risking the bees and your income / enjoyment /. source of good sweet yum ! somehow I don't think so.
Think about how much power you "NEED" for the beehouse.
Do you really need 240VAC ? will 120VAC not do it ?
What will you run from that system and is it practical ?
Do you want it to be expandable for future increases and or independence from the grid ultimately ?
!! How much risk are you willing to take ? Cheapo Value stuff that could fail, or more expensive & reliable with track record ?
?? short term spend vs long term spend ?
--- This is where "Penny Foolish, Dollar Wise" _and_ "Dollar Foolish & Penny Wise" kick in.
IF you have yet to build anything, I very strongly suggest having a good read on this site. It is a commercial installer but the description & documentation on what a Cool Roof system is in incredibly good. I have built my home with this type of roofing method and it is incredible for heat / cold management and energy saving in all seasons. BTW, it cut over 25% of my energy cost on heating & cooling !
The domain name Houstoncoolmetalroofs.com is for sale. Call BuyDomains at 844-896-7299 to get a price quote and get your business online today!
www.houstoncoolmetalroofs.com
Hope it all helps, good luck.