Right now, the only box that Bloom is selling is a 100-kilowatt-hour energy server, which you can check out there. Inside are thousands of solid oxide fuel cells—each one able to power a light bulb. The cells are arranged in stacks, which are aggregated into modules, and so on, with a common fuel input. Right now, they're just for corporations—like Google and Coca-Cola—and run about $700,000 to $800,000 each. The goal's to get them down to three grand, where they'd be suitable for home use. That may still sound expensive, but they pay for themselves in 3-5 years, says Aaron, with an energy cost of 8-9 cents per kW hour vs. the 13-14 cents it typically costs in California. (It saved eBay $100,000 on their power bill.)
Tot articolul: http://gizmodo.com/5479460/giz-explains-fuel-cells-and-bloom-energys-miracle-box
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