A few months ago, I posted about our plans to add on to our home PV system. This spring has been the most rainy one I've seen in a while. Needless to say, progress was slow on construction. Add to that a couple customer PV installs, and I'm amazed it is done at all.
Anyway, we added over 4kw to our existing 3.6kw. The design of the mount was a prototype of a less expensive ground mounting. It is a linear array of 21 modules on a post and rail system of treated wood. The frames were fabricated in our shop from stock aluminum shapes. Every three modules are an assembly and can be tilted to winter and summer angles.
While the design was decidedly cheaper than factory racking, it took up the savings by taking a long time to install. This is an excellent design for a handy person who doesn't pay himself.
This system should produce 10 or 11 MWh/year (10,000-11,000 KWh/year) That is more than we normally use, but have plans on using the net meter surplus to use less propane and acquire electric tools to replace gasoline burners.
