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Calvert Cliffs Clean Energy Center

Positioning Nuclear as the Foundation for Our Clean Energy Future

Located in Lusby, Maryland, Calvert Cliffs Clean Energy Center's two nuclear reactors can produce up to 1,790 megawatts (MW) of clean, carbon-free energy, which is enough electricity to power the equivalent of more than 1.3 million homes. The site is also home to a well-cared-for Champion Chestnut Oak, recognized in the American Forests national register – a symbol of our commitment to environmental preservation.

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Constellation Earns Top Honor from Calvert County Chamber of Commerce

On Dec. 5, 2025, the Calvert County Chamber of Commerce awarded Constellation with its Beacon of Light Recognition for Calvert Cliffs Clean Energy Center employees' "engagement in the spirit of philanthropy and community involvement."

"For 50 years now, Calvert Cliffs has not only powered Maryland with clean, reliable energy, it has powered the very heart of Southern Maryland through unwavering community commitment, service and partnership," wrote Jonathan Evans, of the Chesapeake Beach Town Council, in support of Constellation for the award. "Since its inception in 1975, generations of Calvert Cliffs employees have been committed to the mission to make Calvert County a better place to work, play and raise a family. Their dedication to service is not just a corporate initiative; it is a priority that the employees have embraced as their own."

In 2025:

  • Calvert Cliffs celebrated its 50th anniversary during National Volunteer Month with more than 70 employees and friends building 100 beds with the Sleep in Heavenly Peace organization, ensuring local children have a safe place to sleep. The event was filled with energy and gratitude, capped by a citation from Congressman Steny Hoyer’s office recognizing Constellation’s decades of impact.

  • Calvert Cliff’s commitment to education came to life through the region’s first-ever STEM Center, created with the Cal Ripken, Sr. Foundation at Southern Middle School. The project transformed a traditional room into a hub for hands-on learning and innovation.

  • A $90,000 scholarship was launched with the University System of Maryland at Southern Maryland, supporting students in Mechanical and Electrical Engineering. As one recipient shared, "This scholarship isn't just financial support – it's encouragement to keep pushing toward my dreams."

  • Calvert Cliffs employees partnered with Community Harvest Network during End Hunger Month, packaging nearly 1,700 holiday meals for local families.

  • Through Constellation's CLEAN Awards, more than $100,000 was invested in Calvert County, supporting groups like the Chesapeake Bay Trust, Calvert Nature Society and Patuxent Tidewater Land Trust.

Constellation Earns Top Honor from Calvert County Chamber of Commerce

On Dec. 5, 2025, the Calvert County Chamber of Commerce awarded Constellation with its Beacon of Light Recognition for Calvert Cliffs Clean Energy Center employees' "engagement in the spirit of philanthropy and community involvement."

"For 50 years now, Calvert Cliffs has not only powered Maryland with clean, reliable energy, it has powered the very heart of Southern Maryland through unwavering community commitment, service and partnership," wrote Jonathan Evans, of the Chesapeake Beach Town Council, in support of Constellation for the award. "Since its inception in 1975, generations of Calvert Cliffs employees have been committed to the mission to make Calvert County a better place to work, play and raise a family. Their dedication to service is not just a corporate initiative; it is a priority that the employees have embraced as their own."

In 2025:

  • Calvert Cliffs celebrated its 50th anniversary during National Volunteer Month with more than 70 employees and friends building 100 beds with the Sleep in Heavenly Peace organization, ensuring local children have a safe place to sleep. The event was filled with energy and gratitude, capped by a citation from Congressman Steny Hoyer’s office recognizing Constellation’s decades of impact.

  • Calvert Cliff’s commitment to education came to life through the region’s first-ever STEM Center, created with the Cal Ripken, Sr. Foundation at Southern Middle School. The project transformed a traditional room into a hub for hands-on learning and innovation.

  • A $90,000 scholarship was launched with the University System of Maryland at Southern Maryland, supporting students in Mechanical and Electrical Engineering. As one recipient shared, "This scholarship isn't just financial support – it's encouragement to keep pushing toward my dreams."

  • Calvert Cliffs employees partnered with Community Harvest Network during End Hunger Month, packaging nearly 1,700 holiday meals for local families.

  • Through Constellation's CLEAN Awards, more than $100,000 was invested in Calvert County, supporting groups like the Chesapeake Bay Trust, Calvert Nature Society and Patuxent Tidewater Land Trust.

Celebrating 50 Years by Giving Back on Earth Day

In celebration of 50 years of safe, reliable operations at Calvert Cliffs Clean Energy Center and National Volunteer Month, more than 70 Constellation employees teamed up with the nonprofit Sleep In Heavenly Peace to build 100 beds for children in Southern Maryland. The volunteer event took place on site, commemorating this tremendous milestone through community service while making a real difference in the lives of local families.

U.S. nuclear energy facilities are initially licensed to operate for 40 years and a Nuclear Regulatory Commission (NRC) rule allows licensees to apply for initial and subsequent license renewals of up to 20 years each after the initial 40-year term. The NRC approved initial license renewal on March 23, 2000, authorizing Calvert Cliffs Unit 1 to operate through 2034 and Unit 2 to operate through 2036.

Safety is Constellation’s first and most critical obligation. Nuclear power plants are among the best-protected private sector facilities in America, with monitoring and inspections by plant owners, local officials and the federal government.

Learn more about the safety measures that we take to keep our employees, customers and communities safe.

Calvert Cliffs Clean Energy Center has been part of Lusby, Maryland and its surrounding communities for more than 40 years. We provide hundreds of well-paying jobs and millions of dollars in economic support, including about $22.8 million in taxes annually for schools, roads and other public services.

Calvert Cliffs Clean Energy Center is referenced in legal and regulatory filings as Calvert Cliffs Nuclear Power Plant.