Plug Power stock has been a rollercoaster since going public in 1999.

Plug Power ( PLUG 35.16% ) held its IPO in 1999. At the time, investors were enthusiastic about the company's business model, which promised to usher in a new era of renewable energy using hydrogen fuel cells . Within months, shares zoomed higher from a split-adjusted $160 per share to more than $1,300 per share.

The excitement did not last. The dot-com bubble soon burst, and Plug Power's stock price gradually fell in value by more than 99%. However, we are in a much different world more than 25 years after Plug Power's IPO. Hydrogen fuel cells are arguably more powerful and efficient than ever. Demand projections, meanwhile, have picked up given a growing global emphasis on clean-burning fuels.

How will th

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