July 30, 2025

X-energy Consolidates Its Headquarters in Montgomery County, Maryland

For Immediate Release

July 30, 2025

MONTGOMERY COUNTY, MD – X-energy, a leading nuclear reactor and fuel design technology company focused on clean energy generation, is consolidating its two Rockville offices into a new 125,000-square-foot headquarters at Washingtonian Center in Gaithersburg, Maryland. The company plans to retain 260 full-time employees and create more than 525 new jobs over the next six years.

“We’re excited that X-energy is doubling down on Montgomery County,” said Montgomery County Executive Marc Elrich. “This expansion is a win for our residents, bringing hundreds of good-paying jobs and strengthening our position as a center for innovation in clean energy and advanced technology. We are committed to supporting industries that help address climate change while creating more opportunities for our highly skilled and diverse workforce. I appreciate Governor Moore’s leadership in making sure Maryland remains competitive for these types of transformative projects, and I want to thank X-energy for choosing to keep growing right here in Montgomery County.”

The Montgomery County Economic Development Corporation (MCEDC) has worked with X-energy for nearly a year, supporting the company in understanding local incentive programs, exploring property options, and connecting with local partners and workforce resources.

“We are thrilled that X-energy has chosen to remain in Montgomery County,” said MCEDC Board Chair Elana Fine. “This is the result of a strong partnership with X-energy, built over many months of close collaboration. Together we aimed to align their growth goals with the unique assets and incentives Montgomery County offers, including the MOVE Grant and the Montgomery County Job Creation Fund. This decision reflects the shared commitment to innovation that defines our business community.”

The City of Gaithersburg is also awarding a grant from its Economic Development Toolbox program to supplement X-energy’s capital investment. “X-energy has chosen a high-profile location here,” said Gaithersburg Mayor Jud Ashman. “Visibility from I-270 and the wide variety of amenities offered at the surrounding Rio center have created a unique environment for the company’s workforce.”

In addition to its new Montgomery County headquarters, the company is also opening a 90,000-square-foot facility in Frederick dedicated to non-nuclear testing and prototyping of advanced reactor components.

This expansion underscores X-energy’s commitment to the region’s innovation ecosystem and highly skilled talent pool. “X-energy was founded in Maryland, and we are proud to call this state our home as we enter a period of unprecedented growth,” said X-energy Chief Executive Officer J. Clay Sell. “We look forward to working with Governor Moore and his team to build on the state’s long history of nuclear innovation by making Maryland a national leader in next-generation nuclear technology.”

X-energy’s new headquarters will be located at 9801 Washingtonian Blvd. Gaithersburg, Maryland. 

Photo Credit: X-energy.

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About the Montgomery County Economic Development Corporation (MCEDC)

The Montgomery County Economic Development Corporation serves as the official economic development entity for Montgomery County, Maryland to accelerate business development, attraction, retention and expansion in key industry sectors while advancing equitable and inclusive economic growth. MCEDC operates as a 501(c)(3) nonprofit public-private partnership and is funded by Montgomery County.

About Montgomery County Government

Montgomery County, Maryland, is the largest county in the State of Maryland with over 1.1 million residents. Bordering the District of Columbia, and directly across the Potomac River from Northern Virginia, Montgomery County is home to 18 federal agencies including the National Institutes of Health (NIH), the Food & Drug Administration (FDA), the National Institute of Standards and Technology (NIST) as well as the headquarters to over 700 companies. The county offers a unique ecosystem rich in talent, groundbreaking discoveries, and a vibrant community dedicated to sustainability and bold thinking. With 40% of residents speaking a language other than English and a third of the population born outside the U.S., Montgomery County embraces diversity. This inclusive environment fosters a rich tapestry of perspectives, providing an ideal location for businesses to thrive, innovate and flourish.