The United States nuclear fleet continues to supply a steady share of the nation's electricity even as the industry lays plans for a major expansion, according to a July 2026 report from the American Nuclear Society. The country's operating reactors generate roughly 18% of US electricity, a level that has held largely constant in recent years.
The existing fleet includes 94 operating reactors producing about 100 gigawatts of electricity. Industry and federal officials have set a goal of reaching 400 gigawatts of nuclear capacity by 2050, a target that would require both new large reactors and a wave of smaller advanced designs. The report described the sector as positioned to grow after a long period of flat capacity.
Small modular reactors figure prominently in those plans. The United States now counts 28 SMR siting announcements, more than the next four countries combined, reflecting rising interest from utilities and large electricity users. Much of the new demand traces to data centers and industrial customers seeking reliable, round-the-clock power that can run regardless of weather.
The report framed nuclear as ready to meet growing load, citing federal support, licensing activity at the Nuclear Regulatory Commission, and private investment. Reaching the 400-gigawatt goal will depend on financing, supply chains for fuel and components, and the pace of NRC reviews. For the US grid, the fleet's consistent output provides a baseload foundation as overall electricity demand climbs.
Source: American Nuclear Society - https://www.ans.org/news/2026-07-16/article-8210/nuclear-is-ready-now/