Hey Jason,
The process was just the same as any other architectural improvement (submission to the board for review).
I can say if you are interested, we used Solar City and I have to say they were absolutely fantastic. If you decide to move forward, let me know, I can show you some of the numbers that they gave us (the proposal process was extremely thorough), and give you a federal number as well.
Let me know, but we are extremely pleased with our service and are net zero to the grid now!
Dave