If the hydrogen fuel cell specialist can reach this milestone in 2025, it could trigger a big move in its stock price.Plug Power (PLUG -4.22%) has been one of the most dramatic turnaround stocks on the market in recent months. After dropping by 30% in the first half of 2025, the hydrogen stock has surged by 93% in the past three months, as of this writing.To be sure, Plug Power continues to secure new deals, but it has been doing that for a pretty long time now, and for more than 25 years, the company has f ...