Bloom Energy Server

The Bloom Energy Server or Bloom Box is a solid oxide fuel cell (SOFC) power generator made by Bloom Energy, of Sunnyvale, California, that takes a variety of input fuels, including liquid or gaseous hydrocarbons produced from biological sources, to produce electricity at or near the site where it will be used. It withstands temperatures of up to 1,800 °F (980 °C). According to the company, a single cell (one 100 mm × 100 mm plate consisting of three ceramic layers) generates 25 watts.

The fuel cells have an operational life expectancy of around 10 years; based on predictions on fuel costs, the "break even" point for those who purchase the device is around 8 years. The cell's technology continues to rely on non-renewable sources of energy to produce electricity, and because it is not a hydrogen fuel cell, it still produces carbon dioxide (an important greenhouse gas) during operation.

In 2011, Bloom stated that two hundred servers had been deployed in California for corporations including Google, Yahoo, and Wal-Mart.

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