Shares of Plug Power surged by 17.5% this week as the company announced a critical new contract securing hydrogen fuel at reduced rates until 2030. This development comes at a time when Plug Power's cash flows have been struggling due to shrinking sales. The company emphasized that the contract extension with an unnamed supplier was made possible by the favorable legislation signed into law by President Trump. Plug Power sees this as a significant step towards advancing a domestic hydrogen economy and fostering market growth. However, despite the positive momentum in the stock market, Plug Power's financials remain worrisome, with sales stagnating and declining. While some investors with high risk tolerance may view Plug Power as a high-reward speculative play, caution is advised for most investors. The Motley Fool has no position in Plug Power's stock, and the company has disclosed the risks associated with investing in it.