During the past four years, H Power, Plug Power, and the Electric Power Research Institute, among others — some of the most bullish residential fuel cell manufacturers and agencies — promised to install prototype fuel cells in houses to convince people that the technology was a practical source of home energy. Only Plug Power came through. The year 2001 was supposed to be a memorable one for residential fuel cells; instead, it turned out to be one the industry might prefer to forget.
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