Maryland-based reactor developer X-energy is adding about 70 acres to its nuclear fuel campus in Oak Ridge, Tennessee, giving the company more room to expand production and build additional facilities as it develops fuel for advanced reactors. TRISO-X, a wholly owned subsidiary of X-energy, is already building its first commercial fuel facility, known as TX-1. The move comes as the company works to establish a large-scale US supply chain for TRISO fuel, a type of nuclear fuel designed for high-temperature reactors. The funding is supporting continued development of the fuel campus, including the planned second commercial facility and research center. For X-energy, the larger site is ultimately about having enough physical capacity to move from pilot-scale work to commercial fuel production.