Hydrogen fuel cell specialist Plug Power (NASDAQ:PLUG) is set to release its fiscal first-quarter earnings report prior to the opening bell on May 9. Analysts anticipate a revenue bump from the company’s multiple deals. However, downward revisions for earnings per share pose concerns for PLUG stock, which has slipped 5% ahead of the critical disclosure. Overall, Wall Street is looking for a loss per share of 33 cents on revenue of $157.58 million. In the year-ago quarter, the company posted a loss of 35 cen ...