SGL Carbon expands St. Marys graphite plant with $100M investment for nuclear and semiconductor supply

SGL Carbon marked a $100 million expansion at its St. Marys, Pennsylvania facility, where it post-processes specialty graphite for the U.S. nuclear and semiconductor markets. Company officials said the investment protects existing jobs and should add new ones over time. The site plays a key role in keeping a domestic supply of high-purity graphite available for advanced reactors and chip manufacturing. State and federal officials attended a ceremony at the plant, including a senior advisor from the U.S. Department of Energy and a representative from X-energy, a nuclear reactor developer. The expansion signals that advanced manufacturing for clean energy and electronics is increasingly being treated as a supply chain priority. For readers tracking domestic industrial capacity, the important detail will be how much new production this actually unlocks and how quickly.