PPPL contract extended amidst AI research ventures, concerns over facility management

Princeton will retain the management and operation of the Princeton Plasma Physics Laboratory under a five-year contract extension with the U.S. Department of Energy. The agreement was signed Aug. 27, and the extension will become effective on April 1.

The extension further solidifies a research collaboration between the DOE and Princeton that has existed since 1951. PPPL was originally founded as Project Matterhorn under funding from the U.S. Atomic Energy Commission, a predecessor to the DOE. The current contract was established in January 2009, and federal funding to the University’s management of the laboratory has accumulated to over $2.2 billion since then. The updated contract also includes a contribution from the U.S. Department of Defense.

In the 2025–26 fiscal year, funding for sponsored research at PPPL totaled $232 million, approximately 7 percent of the University’s operating budget that year.

PPPL director Steve Cowley described the agreement as a continuation of PPPL and Princeton’s “shared commitment to scientific excellence” in a statement to The Daily Princetonian. He added that the contract will allow PPPL “to pursue groundbreaking science for years to come.”

With the ultimate mission of developing methods to harness nuclear fusion as a sustainable energy source, PPPL has focused on plasma physics, quantum computing, and AI modeling in recent years through various projects and experiments.

Among the most recent initiatives has been the National Spherical Torus Experiment-Upgrade (NSTX-U), which holds the record for the largest spherical tokamak — an apparatus for producing controlled fusion reactions — in the United States. The NSTX-U received its central magnet bundle, a core component to making the device both more powerful and more compact, earlier this year.

“With current research into the viability of the spherical tokamak design as a fusion pilot plant, PPPL supports the nation’s research priorities,” the PPPL website states.

The DOE and PPPL did not respond to requests for specifications on research developments of the NSTX-U this year. A timeline of the tokamak’s progress, last updated in December 2025, is available on the PPPL website.

AI serves as another highlight of the contract extension, as PPPL serves as a member of the DOE’s Genesis Mission Consortium, an association of “the nation’s leading science and technology experts.” According to the University press release, PPPL will “[pioneer] artificial intelligence and high-performance computing to accelerate fusion research” as a participant of the mission.

The mission’s consortium includes 38 private companies, 14 DOE national laboratories, and five national nuclear security sites. Among the private sector members are CoreWeave and Microsoft, founding partners of the New Jersey AI Hub, as well as technology corporations such as NVIDIA, OpenAI, and Palantir.

PPPL did not respond to multiple requests for comment on whether the laboratory’s current research, which involves AI in various ways, has any relationship with the AI Hub.

Cowley explained to the ‘Prince’ that the laboratory is working on an AI operator built for “a crucial fusion energy heating system” that also functions as a “digital twin of NSTX-U.”

Additionally, while PPPL focuses on its own research ventures, it has also rented laboratory space to companies for various private research projects. Cowley has noted that the laboratory is working with 12 startup companies in fusion. Overall, the PPPL has “more than 42 partnerships with industry through a range of collaborative agreements,” according to Cowley.

Though PPPL continues to focus primarily on fusion energy research through funding from the DOE, the DoD has also allocated more than $800,000 towards funds for PPPL research in the updated contract. The laboratory is not new to researching nuclear science within a defense context, but as a DOE-led facility, PPPL has not entered into a direct partnership with the DoD.

Cowley did not address how current work that the laboratory is doing intersects with any federal department other than the DOE.

PPPL has been the subject of numerous operational issues since the DOE contract was established in 2009, including extreme overpayment of employees in 2012, facility malfunctions in 2016, dozens of layoffs in 2025, and an ongoing lawsuit against the laboratory for neglecting safety inspections.

Cowley said that “a robust safety culture is central to the operational resiliency of our mission.”

“The value we place on Integrated Safety Management and continuous improvement is confirmed through DOE assessments of our programs and evidenced in our publicly available report card,” he stated.

Averaging the grades of eight categories that each of the 11 DOE Office of Science national laboratories received in their 2025 fiscal year report cards, PPPL ranks eighth. For the “Construction and Operation of Research Facilities” category, which encompasses operational performance, PPPL is in the lower half of the grades across the nine laboratories who received a grade in that category.

The 2025 PPPL assessment, when compared with the 2009 assessment, improved slightly in two categories while maintaining its grade or slightly deteriorating in the other six.

The newest report card is expected to come out within the next month. 

Haeon Lee is the associate News editor for the ‘Prince’ leading research coverage. She is from Brooklyn, N.Y. and often covers campus research and academic departments. She can be reached at hlee[at]dailyprincetonian.com.

Ryan Buschman is a News contributor for the ‘Prince.’ He is from Haddonfield, N.J.

Please send any corrections to corrections[at]dailyprincetonian.com.