[boris]

""It's also more efficient, pollutes less and is less expensive than buying power from the grid," Jason Fanselau, spokesman for RealEnergy, told United Press International."

This is demonstrably false.

--Boris

[Wonder Warthog]

"This is demonstrably false."

So demonstrate.

[meatloaf]

It is dependent on location which determines retail energy prices and special situations such as other energy sources available. There has to be a break even point below which they can't make the claim they have the cheapest power.