Data center power needs might just save Plug Power.Plug Power (PLUG 8.77%) stock hasn't been a winning investment. Shares of the hydrogen-based energy company plummeted 94% over the last three years, including a 27% decline year to date.Yet some investors are still betting on a turnaround, and the stock has rebounded over the last several months from an all-time low price. The reason for that recent bounce is also why I am still keeping an eye on Plug Power. A solution for data centersPlug Power made an amb ...