On the optimistic side, I once read an article about an island off Denmark that went completely off the power grid. I wish I could remember where I read it!
Tiki,
Maui is finally getting a wind farm as we speak. It's located above the pali on the way to Lahaina and should generate about 10% of the island's needs. Take a look at the map. It's in what's called a "Supurb" area. Basically, it blows like stink there almost year around.
