Retail investors are likely familiar with Plug Power, a standout company in the hydrogen and fuel cell industry. In business since 1997, the firm has earned attention for deals with major customers like Walmart and Amazon. Its technology powers forklifts for these retailers in the form of hydrogen fuel cell systems. Plug Power is also involved in hydrogen storage, fuel cell engines, liquid hydrogen distribution and storage, and maintenance for its systems. CEO Andy Marsh has been in the captain’s chair since 2008, and now investors are closely watching to see when he can achieve profitability for the company. With ongoing interest and investment in clean energy solutions, Plug Power is a stock to watch.