Bloom Energy Server

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The Bloom box - doing fuel cells right

Todd Woody at the NY Times has had a couple of stories in the last few days on The Bloom Box, or Bloom Energy Server, a solid-oxide fuel cell designed as an on-site distributed generator. Present costs are still rather pricey - $7 to $8 capital cost per watt (or $7000-$8000/kW - I had this mixed up earlier - see this analysis from Jesse Jenkins for details) plus the cost of natural gas as fuel and any operational and maintenance costs (and they're only claiming a 10-year lifetime). Efficiency is quoted at 50 to 55%. Higher efficiency and lower capital costs would be essential to making it truly useful. Still, I find this a good step forward in the technology. Why?

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