Thin Film Fuel Cells May Obsolesce Large Electric Plants. This could be big. Or small, really. The article claims two soda-can-sized thin-film fuel cells attached to a household gas line could produce 5 kilowatts, (almost) enough to supply the entire electrical needs for the house, at twice the energy conversion efficiency of current power generation and distribution technology. Come to think of it, I can't ever remember having a gas outage. But in our neighborhood, we suffer electrical outages once every couple of months. Sounds great all around. I hope we see it real.