Nuclear Restarts Put Reliability and Cost in Focus

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ByMark Davis

October 17, 2026

Federal loans could revive three shuttered U.S. nuclear plants, including Three Mile Island, as data-center demand and California fires sharpen questions about dependable power.

The federal government is backing an unusual energy bet: bringing shuttered nuclear plants back to life rather than building generation from scratch. The Department of Energy is lending as much as $4.4 billion to support restarts at Palisades in Michigan, Three Mile Island’s Crane Clean Energy Center in Pennsylvania and Iowa’s Duane Arnold plant, the Associated Press reported Friday.

Together, the three facilities would restore 2.25 gigawatts of capacity—enough to power roughly 2 million homes and businesses, according to the AP. The projects could supply around-the-clock electricity as technology companies seek large, dependable supplies for data centers. They also show how federal financing is being used to tackle the high costs and long lead times of returning complex facilities to service.

At Three Mile Island in Dauphin County, Constellation plans to spend $1.6 billion to restart the reactor, with operations targeted for 2027. The project is tied to a 20-year power agreement with Microsoft, and the Energy Department has provided a $1 billion loan, the AP reported. A long-term buyer gives the project a clearer revenue path than reliance on short-term electricity prices. But neither a contract nor a federal loan removes construction, licensing and operating risks; 2027 remains a target, not a guarantee.

Palisades carries a separate milestone: it is expected to become the first nuclear plant in the world to resume generation after entering the decommissioning process, according to the AP. Its restart will test whether equipment, staffing and regulatory requirements can be met safely and on schedule—and could offer lessons for similar projects.

The economics are not simply a contest between nuclear power and renewables. Nuclear plants can provide steady electricity without direct emissions from burning fuel at the facility. Wind and solar add power without fuel costs, but their output varies with weather and time of day. A reliable grid needs generation, transmission and flexibility; the value of each project depends on local demand, financing and what other power is available when needed.

California’s fires underscore that electricity systems face hazards beyond fuel prices and plant construction. The Norte Fire had burned 570 acres by Saturday, destroyed six homes and injured two firefighters, with containment at zero, ABC7 reported. Evacuation orders affected about 16,000 residents and 6,000 homes. Red Flag Warnings for parts of Los Angeles and Ventura counties were scheduled to remain in effect until 8 p.m. Saturday, while a High Wind Warning for the Santa Ana Mountains and foothills ran through noon.

The reported conditions do not establish that power cuts occurred or that any generation source would have prevented damage. They do show that reliability involves more than having enough capacity on paper: extreme weather can threaten homes, infrastructure and the networks that deliver electricity.

For taxpayers, the loans pose a practical question: can public backing unlock dependable power that private markets would not finance, or does it transfer too much project risk to the government? For customers and businesses, the test is whether the plants return on time and provide electricity at a competitive cost. Their emissions benefit will depend on what generation they displace.

The projects will not resolve every challenge facing the U.S. grid, and the available reporting provides no cost comparison with alternative supplies. But they offer a clear test of whether existing nuclear sites can be revived to meet rising demand. The outcome will hinge on execution, reliability and the price of keeping the lights on.

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