The Bloom Box? a box that makes clean energy able to power a U.S house?

  In Silicon Valley a company named Bloom Energy has invented a another type of fuel cell that will be in a box that the CEO says he wants in every backyard, that way you no longer have to buy your energy. their are a few big time business that bought these boxes and they say it does save them on energy bills but they paid a big price tag for them. the bloom box was originally used to create oxygen on mars which I find hard to believe. he said after the president scrapped the idea he turned that machine into a fuel cell that creates lots of energy using oil or natural gas etc. without burning emissions.

 here is a picture of a Bloom Box