Power & Operations

Three commercial power reactors across two Illinois nuclear power plants—Constellation’s Clinton and Dresden—have had their licenses renewed for 20 more years by the Nuclear Regulatory Commission.

France’s state-owned electric utility EDF has announced that Flamanville-3—the country’s first EPR—reached full nuclear thermal power for the first time, generating 1,669 megawatts of gross electrical power. This major milestone is significant in terms of both this project and France’s broader nuclear sector.

Blye Widmar

"Where are the prints?!"

This was the final question in an onslaught of verbal feedback, comments, and critiques I received from my students back in 2019. I had two years of instructor experience and was teaching a class that had been meticulously rehearsed in preparation for an accreditation visit. I knew the training material well and transferred that knowledge effectively enough for all the students to pass the class. As we wrapped up, I asked the students how they felt about my first big system-level class, and they did not hold back.

“Why was the exam from memory when we don’t work from memory in the plant?” “Why didn’t we refer to the vendor documents?” “Why didn’t we practice more on the mock-up?” And so on.

The operating licenses for the three boiling water reactors at Browns Ferry nuclear power plant, in Athens, Ala., have each been renewed by the Nuclear Regulatory Commission for an additional 20 years. The reactors, operated by the Tennessee Valley Authority, are now licensed to operate until December 2053 for Unit 1, June 2054 for Unit 2, and July 2056 for Unit 3.

When Constellation decided to install replacement Alstom low-pressure turbines at three of its boiling water reactor plants more than 15 years ago, one benefit was knowing the new turbines should operate reliably—and without major inspections—for several years.

The two reactors at Dominion Energy’s Surry plant are among the oldest in the U.S. nuclear fleet. Yet when the plant celebrated its 50th anniversary in 2023, staff could raise a toast to the future. Surry was one of the first plants to file a subsequent license renewal (SLR) application, and in May 2021, it became official: the plant was licensed to operate for a full 80 years, extending its reactors’ lifespans into 2052 and 2053.

Hideyo Hanazumi, governor of Niigata Prefecture in Japan, has approved the restart of two reactors at Kashiwazaki-Kariwa nuclear power plant. The seven-unit facility, operated by Tokyo Electric Power Company, is the largest nuclear power plant in the world. It has been shut down since the March 2011 earthquake and tsunami struck the country, severely damaging TEPCO’s Fukushima Daiichi plant.

The Department of Energy announced on November 18 that it has closed on a $1 billion loan through its Loan Programs Office to Constellation to aid in financing the restart of the 835-MWe Crane Clean Energy Center, formerly Three Mile Island-1.

AI for energy, and energy for AI: that is the new refrain. But can nuclear power plants be deployed at the pace needed for substantial and timely contributions to the energy infrastructure? For Westinghouse, delivering its AP1000 on time and on budget in the United States is a challenge not yet accomplished, while newcomers like Aalo Atomics are turning to AI to speed design, permitting, and construction.

Mike Kramer has a background in finance, not engineering, but a combined 20 years at Exelon and Constellation and a key role in the deals that have Meta and Microsoft buying power from Constellation’s Clinton and Crane sites have made him something of a nuclear expert.

Kramer spoke with Nuclear News staff writer Susan Gallier in late August, just after a visit to Clinton in central Illinois to celebrate a power purchase agreement (PPA) with Meta that closed in June. As Constellation’s vice president for data economy strategy, Kramer was part of the deal-making—not just the celebration.

The Nuclear Regulatory Commission and the U.S. Army Corps of Engineers have completed a draft supplemental environmental impact statement for a small modular reactor at the Tennessee Valley Authority’s Clinch River nuclear site in Oak Ridge, Tenn.

A day anticipated by many across the nuclear community has finally arrived: NextEra Energy has officially announced its plans to restart Iowa’s only nuclear power plant, the Duane Arnold Energy Center.

The board of directors of South Carolina’s state-owned utility Santee Cooper voted today to approve the proposal from Brookfield Asset Management to complete two new AP1000 power reactors at the V.C. Summer site in Jenkinsville, S.C.

Palisades nuclear power plant has received its first fuel shipment, a key step ahead of its highly anticipated restart by the end of the year.

Located in Covert Township, Mich., Palisades will be the first U.S. nuclear facility to restart after being slated for decommissioning. The Crane Clean Energy Center, formerly Three Mile Island-1, is the next decommissioned nuclear reactor to be resurrected, with an expected restart by 2027.

Michigan-based consulting firm Ducker Carlisle has released a report that outlines projected developments and opportunities as well as potential problems in the global shift to cleaner power. Global Energy Transition Outlook predicts that market growth will happen not only in large-scale utility upgrades but also in small- and mid-scale electrification projects.

Duke Energy is looking to add large light water reactors and small modular reactors to its fleet in the coming years to meet increased energy demands expected in its southeast region.

The Nuclear Regulatory Commission has renewed the operating licenses of NextEra Energy’s Point Beach Units 1 and 2 for an additional 20 years. The Two Rivers, Wis., plant will now be able to operate into the 2050s.

Nuclear power plant refueling outages are among the most complex phases in a plant’s operational cycle.¹ During these outages, tens of thousands of activities, including maintenance and surveillance, are conducted simultaneously within a short timeframe. Typically lasting three to four weeks, these operations involve large crews of contractors with diverse skill sets performing tasks ranging from testing and surveillance to maintenance. Outages may extend longer if major backfitting or modernization projects are planned. Consequently, plant outages are expensive, incurring significant operational costs, such as contractor labor and equipment, as well as the loss of generation while the plant is off line. This can easily cost a plant operator more than $1 million a day. Therefore, there is a constant need to mitigate the economic impact on plants by reducing the frequency, duration, and risks associated with these outages.^2,3

The Tennessee Valley Authority has posted a video of the implosion of a 1970s-era, 540-foot-tall hyperbolic cooling tower at its Hartsville site in Tennessee, which once was to have hosted a nuclear power plant. The tower crashed to the ground at the hands of a demolition crew on September 18 as part of TVA’s actions to get rid of old, obsolete, and unused structures in the Tennessee Valley region and make room for future projects that are expected to add more than 6,200 megawatts of power.

Despite the emergence of new projects, technologies, and commercial ventures, the rate of actual deployment worldwide has been relatively slow—but not necessarily for the reasons people might think.