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.
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, emissions-free energy, which is enough electricity to power the equivalent of more than 1.3 million homes.
Nuclear
Calvert Cliffs Clean Energy Center
1650 Calvert Cliffs Parkway, Lusby, Maryland 20657
Get DirectionsIn The Spotlight
Neon Nights 5K: Powering Community Connections
Constellation was a proud Platinum Sponsor of the 2026 Neon Nights 5K, supporting Project ECHO and joining more than 600 community members for an evening focused on connection, health and community impact. The event provided a great opportunity to showcase Constellation's commitment to Calvert County while engaging with residents, local leaders and nonprofit partners.
Calvert County, MD Playground Build with KABOOM!
What happens when a community comes together with a shared vision? Something truly incredible. Nearly 200 volunteers joined forces in May 2026 at Cove Point Park in Lusby, Md., just a few miles from the Calvert Cliffs Clean Energy Center, to build a brand-new playground alongside KABOOM! and Calvert County Parks and Recreation. In a single day, an outdated space was transformed into a vibrant community asset that will bring joy, connection and memories for children and families for years to come.
This effort would not have been possible without great collaboration from several local organizations. Thank you to DASH In Stores / Wills Group, Chick-fil-A First Colony Center & The Witte Family, Scheibel Construction, CareFirst BlueCross BlueShield, CalvertHealth, The Mark Frisco Team of Century 21 New Millennium, and Sneade's Ace Home Center, Inc. for helping us to build not just a playground, but a stronger community in southern Maryland.
Calvert County, MD Design Day with KABOOM!
In 2026, Constellation has teamed up with KABOOM!, Calvert County Parks & Recreation and several area businesses to support the construction of a brand-new playground at Cove Point Park, just minutes from our Calvert Cliffs Clean Energy Center in southern Maryland. In March, we hosted a hands-on, community driven Design Day so residents and future playground users could offer their input and design a space that reflects local needs, creativity and accessibility. It was a blast! Thanks to sponsors, Dash In, Scheibel Construction, Chick-fil-A, The Mark Frisco Team, CareFirst BlueCross BlueShield, CalvertHealth and Sneade's Ace Home Center for their support of this project.
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.
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Resources
Community Impact Grant Program
The Calvert Cliffs Community Impact Grant Program is a new philanthropic initiative designed to provide accessible, small-scale funding to nonprofit organizations serving Calvert, St. Mary's and Charles Counties, focusing on education, workforce development, environment, health, housing and transportation. Applications are due by October 1, 2026.
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 50 years. We provide hundreds of well-paying jobs and millions of dollars in economic support, including about $21 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.
- Learn more about what to do in an emergency.
- Download printable Functional & Transportation Needs postcard the 10-mile Emergency Planning Zone.
- Download the Emergency Preparedness/Public Information Brochure.
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In The News
March 25, 2026
Calvert Cliffs Refueling Outage Delivers Close to $90 Million in Upgrades and Provides Powerful Boost to the Local Economy
Annual outage supports safe, reliable, emissions-free power for 1.3 million homes while bringing 1,500 skilled workers to surrounding community.
November 04, 2025
Constellation Offers Maryland a Menu of New Generation Options to Meet Rising Demand, Including 5,800 Megawatts of New Power Generation and Battery Storage
Locations
Our Fleet
Generation Facility
Nuclear
Braidwood Clean Energy Center
35100 South Route 53 Braceville, Illinois 60407
Generation Facility
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Byron Clean Energy Center
4450 North German Church Road Byron, Illinois 61010
Generation Facility
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Crane Clean Energy Center
2625 River Road Middletown, Pennsylvania 17057
Generation Facility
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Dresden Clean Energy Center
6500 North Dresden Road Morris, Illinois 60450
Generation Facility
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James A. FitzPatrick Clean Energy Center
268 Lake Road Oswego, New York 13126
Generation Facility
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LaSalle Clean Energy Center
2601 North 21st Road Marseilles, Illinois 61341
Generation Facility
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Limerick Clean Energy Center
3146 Sanatoga Road Pottstown, Pennsylvania 19464
Generation Facility
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Nine Mile Point Clean Energy Center
348 Lake Road Oswego, New York 13126
Generation Facility
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Peach Bottom Clean Energy Center
1848 Lay Road Delta, Pennsylvania 17314
Generation Facility
Nuclear
Quad Cities Clean Energy Center
22710 206th Avenue North Cordova, Illinois 61242
