At the following webpages, you can view some pictures and the video presentation by Steve Jobs to the Cupertino City Council 07 June 2011 re the futuristic Apple Campus for 13,000 employees.
Construction of the ring shaped building is scheduled to start next year with completion in 2015. Most of the parking will be underground so site will be 80% landscaping - very beautiful with lots of trees.
"There's not a flat piece of glass in this building," Jobs states, before going on to add that they've learned how to "do" large sheets of curved glass through designing various Apple Stores around the world.
Rather than operating off of the power grid and installing back-up generators, Apple is going to build their own powerplant, possibly fueled by natural gas or something green, and they will use the power grid as a back-up.