Is solar worth the investment?

[Spencer Riche]

Hello BP! I'm wondering if anyone has experience installing solar on their buildings? I'm researching whether the return is worth it; the solar will be installed on a 35,000 sqft, flat-roofed office building I have. I'm seeking alternative solutions to decrease the operating energy costs, and/or create an income stream selling excess energy back to the grid. 

For anyone that has installed solar on larger properties, kindly respond to the questions below!

• 1)  What was the rough cost, and what size was the building?
• 2)  Is there a ballpark rule of thumb for calculating system costs? I understand cost varies greatly depending on many factors. (location, building, system, usage, costs, etc).
• 3) What was the ROI? How long did it take, or will it take to return your initial investment?

Thanks!