The Department of Energy has launched an initiative aimed at adding 5 gigawatts of nuclear generating capacity to the US grid through a combination of power uprates at existing plants and restarts of retired reactors, according to industry reporting. The effort targets capacity that can be brought online faster than entirely new construction.

Power uprates allow operators to increase the output of existing reactors through equipment upgrades and revised operating parameters, capturing additional megawatts from plants already licensed and running. Restarts return shuttered units to service, a path the Nuclear Regulatory Commission opened by approving the first ever restart of a retired reactor at Holtec's Palisades plant in Michigan.

The initiative fits a broader pattern of capacity additions. Constellation's Crane Clean Energy Center is set to restart in 2027, with Duane Arnold following in 2029, while advanced reactor projects such as TerraPower's Natrium plant in Wyoming have secured construction permits. The Department has also backed small modular reactor deployment with up to a combined 800 million dollars in cost shared funding for selected project teams.

The focus on uprates and restarts reflects the timeline pressure facing the grid. With electricity demand rising sharply, particularly from data centers and industrial users, capacity that can be added in a few years rather than a decade carries strategic value. The 5 gigawatt target illustrates how policymakers are prioritizing near term additions from the existing fleet alongside longer horizon new builds.

Source: POWER Magazine - https://www.powermag.com/doe-unveils-initiative-to-add-5-gw-of-nuclear-capacity-through-uprates-and-restarts/