BUZZ-Ballard Power Systems Inc: Order for 13 fuel-cell systems
** Canadian clean energy fuel-cell maker's shares up 6.9 pct at $3.40 in extended trading
** Company's Caribbean distributor gets order for 13 fuel-cell backup power systems to be deployed in communication provider Digicel Group Ltd's network in Jamaica
** Fuel-cell systems offer an economic alternative to lead-acid batteries and diesel generators
** Up to Monday's close, stock had more than doubled in value this year
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