The Fuel Cell - battery or generator?

Plug Power, a nasdaq listed stock, today announced a big sales contract with Tyco and at the time of writing the stock has jumped over 12%. Plug Power is one of the leading manufacturers of Proton Exchange Membrane Fuel Cells for stationary applications.

Fuel Cells are coming, but not everyone agrees with what they are best for. Some wonder if they make better generators than back-up batteries. Let's see. The 5 kw fuel cell though seems set for the remote location first, before it comes into our homes.