I recently installed a 10.88 kW (DC) rooftop solar system. The system consists roughly of the following components:
*(40) 270 Watt Canadian Solar panels
*IronRidge aluminum railing, splices, angle brackets, UFO bolts
*(~160) QuickMount PV aluminum mounting plates
*Roofmounted Junction Box
*Grounding lugs as required to bond racking
*Fronius Primo Inverter
*10 AWG THHN copper wiring as required
*6 AWG Bare Copper grounding conductor as required
*3/4″ EMT electrical metal tubing (in enclosed attic space)
*3/4″ LiquidTight Flexible tubing on outside of home
This was not designed to be a complete detailed installation, but just an overview of the process I followed. This system took about 5 full days of labor to install, but took place over a couple weeks. The mounts and rails were installed on one weekend, the panels were installed in one day. The system was wired over a couple afternoons. The inverter I selected has a built-in wifi capability that allows you to connect to your home network for easy monitoring of the system.
Installing a system in this manner will run approximately $2/watt and can be sized appropriately for your home. It is designed to help offset a portion of our overall electric consumption in our home. It is not large enough to produce all of our needs and it does not include any storage (i.e. battery backup).
Please leave any questions you have in the comments section below.