The article highlights Exxon Mobil, Linde, Plug Power, NuScale Power, STERIS, Shell, and BP as the top seven hydrogen stocks to watch according to MarketBeat's stock screener tool. These companies are actively involved in developing, producing, or supporting the infrastructure for hydrogen as an energy carrier, providing exposure to the emerging low-carbon 'hydrogen economy.' The article details each company's profile, including their market segments, stock performance, trading volume, market capitalization, price-to-earnings ratio, and other key financial indicators. For example, Exxon Mobil engages in the exploration and production of crude oil and natural gas, Linde operates as an industrial gas company, Plug Power develops hydrogen and fuel cell solutions, NuScale Power sells modular light water reactor nuclear power plants, and STERIS provides infection prevention products and services. Investors are interested in these hydrogen stocks due to their significant contributions to advancing the low-carbon economy. The companies mentioned have had the highest dollar trading volume within the hydrogen stocks category in recent days, indicating a growing interest in hydrogen-related investments. The article aims to provide investors with valuable insights into the potential growth and market position of these key players in the hydrogen sector, attracting attention for their role in shaping the future of clean energy and sustainable technologies.