The Nuclear Regulatory Commission is conducting a special inspection at Constellation’s Quad Cities nuclear plant to review two events caused by battery issues. Neither event had any impact on public health or plant workers.

Meta is teaming up with Constellation to buy nuclear power from an Illinois plant over the next 20 years in a power purchase agreement that helps support the goals of both companies.

Here’s a look at some recent announcements from the Nuclear Regulatory Commission.

Summer SLR: The NRC this month published its final environmental impact statement for Summer Unit 1’s subsequent license renewal application. Dubbed a supplemental EIS, the report is an important step in determining if Dominion Energy can continue operating its 966-MWe Westinghouse pressurized water reactor unit for an additional 20 years beyond August 6, 2042, the current end of its license.

Nuclear generation has inertia. Massive spinning turbines keep electricity flowing during grid disturbances. But nuclear generation also has a kind of inertia that isn’t governed by the laws of motion.

Starting—and then finishing—a power reactor construction project requires significant upfront effort and money, but once built a reactor can run for decades. Capacity factors of U.S. reactors have remained near 90 percent since the turn of the century, but it took more than a decade of improvements to reach that steady state. The payoff for nuclear investments is long-term and reliable.

When Exelon Generation shut down Three Mile Island Unit 1 in September 2019, managers were so certain that the reactor would never run again that as soon as they could, they had workers drain the oil out of both the main transformer and a spare to eliminate the chance of leaks. The company was unable to find a buyer because of the transformers’ unusual design. “We couldn’t give them away,” said Trevor Orth, the plant manager. So they scrapped them.

Now they will pay $100 million for a replacement.

The turnaround at the reactor—now called the Crane Clean Energy Center—highlights two points: how smart Congress was to step in with help to prevent premature closures with the zero-emission nuclear power production credit of 0.3 cents per kilowatt-hour (only two years too late), and how expensive it is turning out to be to change course.

Craig Piercy
cpiercy@ans.org

I find myself saying the expression above a lot these days—to my kids, my wife, my friends, and colleagues. Most recently, I said it to the person sitting next to me after the pilot of our plane—bound for Reagan National Airport a day after the collision of AA flight 5342 and a military Blackhawk helicopter—aborted the landing at the last minute.

I am not sure where I picked up this pronouncement, but I find it to be apropos to the topsy-­turvy moment where we find ourselves in 2025. In addition to the first U.S. commercial airline crash in 15 years, we are witnessing a new presidential administration in its infancy playing by the Silicon Valley rules of “move fast, break things.” We’ve seen DeepSeek, the low-cost Chinese AI that reportedly uses 50–75 percent less energy than its NVIDIA-powered counterparts, tank Constellation’s market value by more than 20 percent in one late-January trading day.

Nuclear powerhouse Constellation Energy announced Tuesday it will spend roughly $100 million to upgrade critical electrical systems and plant equipment at its Calvert Cliffs nuclear power plant, where the company may pursue license renewals.

Iowa’s lone nuclear plant may soon see new life as NextEra Energy takes a step toward relicensing the Duane Arnold nuclear power plant.

The U.S. General Services Administration has announced a historic long-term purchase of electricity, including carbon-free electricity, from Constellation New Energy Inc. to power 13 federal agencies. In combination with another GSA contract, Constellation secured more than $1 billion from the deal.

Constellation is launching a pilot program that allows its Washington, D.C., customers to purchase 100 percent nuclear energy for their homes.

A new complaint filed by Constellation asks the Federal Energy Regulatory Commission to order the PJM Interconnection to provide rules for co-located generation to serve large facilities, such as data centers.

The Federal Energy Regulatory Commission has denied plans for Talen Energy to supply additional on-site power to an Amazon Web Services’ data center campus from the neighboring Susquehanna nuclear plant in Pennsylvania.

The pursuit of returning two of the country’s retired nuclear plants into service is not only unusual—it is unprecedented and promises to make history.

That’s according to a piece coauthored by former assistant secretary for nuclear energy Katy Huff in the Bulletin of the Atomic Scientists regarding plans from Holtec and Constellation to restart Michigan’s Palisades plant and Pennsylvania’s Three Mile Island Unit 1, respectively.

Tech giant Amazon announced Wednesday new partnerships with Dominion Energy and X-energy to develop and deploy 5 gigawatts of nuclear energy to power needs across the country over the next 15 years.

Kairos Power and Google announced over the weekend a new power purchase agreement to provide the tech giant with 500 megawatts of clean energy by 2035.

Under the agreement, California-based Kairos Power will develop, construct, and operate a series of advanced reactor plants and sell energy, ancillary services, and environmental benefits to Google. Plants will be sited in “relevant service territories” to supply clean electricity to Google data centers. The first reactor is planned to be deployed by 2030 to support Google’s 24/7 carbon-free energy and net-zero goals.

As evidenced by the well-attended Climate Week NYC, there is a growing awareness that nuclear energy must be incorporated into national energy strategies if net-zero goals are to be achieved. In recent years, green bonds have found solid footing in the world of energy finance. These eco-friendly issuances have evolved from supporting just wind and solar projects and are increasingly being used to power much-needed growth in the civil nuclear sector. Green bonds that have been issued over the past several years in Canada, France, Finland, and the United States are now being used to support investment in nuclear projects, from breathing new life into old reactors to in certain instances supporting nuclear new build projects. However, a question remains: Can this liquidity be deployed where and when it is needed most—to support ambitious new nuclear project buildouts?

Nuclear powerhouse Constellation announced today the signing of a 20-year power purchase agreement with Microsoft that will pave the way for the restart of Three Mile Island Unit 1—under a new name to honor Chris Crane, former chief executive of Exelon when Constellation was part of the larger company.

The U.S. Nuclear Regulatory Commission began a special inspection last week at South Texas Project nuclear power plant into two incidents at the site, which led to separate, unplanned shutdowns of both Units 1 and 2.

• On May 12, a transformer that supplies off-site power to the station shut down unexpectedly and took Unit 2 off line.
• On July 24, a fire in an electrical switchyard at the site caused an unplanned shutdown of Unit 1.

The Ogle County Board has approved a zoning change that designates 524 acres around the Byron nuclear power plant, located in northern Illinois, as industrial rather than agricultural.

Constellation is taking applications for its 2024 E² Energy to Educate grant program, which provides funding for student projects focusing on energy innovation.

Educators and students in grades 6–12 can apply for program grants of up to $25,000, and those in two- and four-year colleges can apply for grants of up to $50,000.