Assertion: regenerative fuel cell | /r/CapableOf | utilize solar-powered electrolyzer
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text: Other types of fuel cells include: Alkaline fuel cells, which were used by the NASA space program (with efficiencies of 70%); Direct Methanol fuel cells, which draw the hydrogen out of the methane without the assistance of a fuel reformer; and Regeneration fuel cells, which utilize a solar-powered electrolyzer and their own waste water to form a self-contained regenerative system.