That’s right Natural Gas. I remember mentioning to you before that they require fuel imputs. You can not compare apple to apples when one fuel source is free, the sun, and another is not, fossil fuels. Even if there is a 3.5 year payback you have on going costs. So maybe it a good “greener” technology compared to a coal fired electricity generating plant, but we don’t know if it will ever work out over 30 years compared to solar, especially in Southern California.
As to the 50K Btu’s of heat per year.I think it would have to be a lot more. One gallon of LNG produces 73,500 btu’s,for instance. Heat really isn’t what we need much and even in colder climates they don’t need it in the summer except maybe to heat water. And the fuel cell is not going to beat other efficiencies on that.