Andy Marsh, CEO of Plug Power Inc (<a href="https://www.nasdaq.com/market-activity/stocks/plug" target="_blank">NASDAQ:PLUG</a>), is very optimistic about the company’s prospects of finalising its long-awaited loan guarantee deal with the US Department of Energy (DOE) but, in the meantime, Plug is also looking to bring in an equity investor to support the work on its next green hydrogen plant, Marsh told Renewables Now.