Hosting companies DO NOT pass electricity savings to customers. if you compare prices in WA-they are essentially the same despite the fact that they pay 2c/electricity.
Electrical savings transmission simply does not WORK!
Sure it does. Ask advania in iceland how much they charge for power when you supply the fully populated container.
They pay 4 ct for power, they will bill you 5 ct.
Instant savings.

advania quotes $160/mo per Sp-10, this is much much more than 5c/kw (it should be $44 in electricity /mo at this rate), so I don't know where you get your numbers.
Of course, they should charge small amount for everything else, but not 3 times more than electricity.