(Adds share movement of rival companies)
** Fuel cell maker's shares up 12 pct at $4.69 premarket
** FBR Capital Markets starts covering stock with "outperform" rating and price target of $8
** Plug Power has successfully shifted to offering complete hydrogen-based solutions from making only fuel cell power packs for material handling systems, analysts say
** Analysts expect new order wins in the United States, potential for expansion in Europe and rollouts of hydrogen delivery solutions
** Shares of Plug Power rival Ballard Power Systems Inc up 7 pct at $3.97 premarket.
** FuelCell Energy Inc also up about 6 pct at $2.28 premarket