Clean Air & Reliable Power
Nuclear energy is a clean, safe, affordable way to meet future energy demands in the United States and around the world. It emits virtually no greenhouse gases (GHG), making it a clean power source that can help address global warming. Nuclear plants provide 60% of U.S. clean generation and 20% of the nation's electricity overall.
Nuclear power plants are critical to the stability of the U.S. electrical grid because they can produce an uninterrupted flow of electricity for extended periods. This uninterrupted flow supplies the necessary level of baseload electricity for the grid to operate around-the-clock.
Operating our fleet of 23 nuclear power plants safely and reliably is Exelon’s first priority. We continue to invest in these units to maintain reliability, extend operating life and maximize output.
Exelon has submitted applications to the U.S. Nuclear Regulatory Commission (NRC) to extend the operating licenses for its Limerick, Braidwood and Byron generating stations, which would allow them to operate for an additional 20 years. Those applications are in the review process.
Exelon’s Dresden, Oyster Creek, Peach Bottom, Quad Cities, and Three Mile Island nuclear plants have all been granted license extensions by the NRC.
Exelon also supports national policies and legislation that will encourage the continued and extended operation of existing plants, as well as the construction of new plants. We estimate that the U.S. will need at least 25-30 new nuclear reactors by 2030 if the country is to succeed in reducing greenhouse gas emissions by 80 percent by 2050.
Safely storing spent fuel. While nuclear plants emit virtually no GHG emissions, they do create spent fuel that needs to be safely stored so as not to impact the environment. The federal government used funds from nuclear plants to create the Yucca Mountain permanent storage site in Nevada, but this project is now on hold.
Until the federal government determines a new solution, Exelon safely stores its spent fuel in plant spent fuel pools or dry casks consistent with federal regulations. All of this spent fuel is safely stored in a space equivalent to 2 Olympic sized swimming pools.
Local Economy & Community
Nuclear plants employ more people per megawatt generated than any other type of plant and pay 36% more than average salaries in the local area.
Our power plants aim to be good neighbors within their local communities with active involvement through sponsorships, charitable giving and volunteering focusing on the environment, education, the arts and diversity. We encourage our employees to give back to their communities and we recognize their efforts through various programs.
Learn more about Exelon's Community.
All Exelon facilities employ sophisticated emergency response plans to protect public health and safety. These plans are reviewed and approved by state governments and federal agencies such as the Nuclear Regulatory Commission (NRC). The emergency planning includes coordination with local counties, municipalities and school districts.
The nation’s nuclear energy plants are among the safest industrial facilities in the United States. Well-designed facilities that include extensive environmental monitoring programs protect plant workers, the public and the environment. U.S. nuclear plants are built to withstand impacts from earthquakes, floods, hurricanes and aircraft. In addition, the nuclear industry has the most sophisticated security and emergency preparedness plans in the U.S. industrial sector.
Exelon Nuclear has met or exceeded all security measures mandated by the U.S. Nuclear Regulatory Commission for nuclear plants after the Sept. 11, 2001, terrorist attacks. The measures include altered or new physical barriers, increased security personnel, training enhancements and additional surveillance equipment. Exelon Nuclear works in cooperation with other important federal agencies, including the Department of Defense, the Department of Health and Human Services and the Federal Bureau of Investigations to ensure the highest level of defense against a terrorist attack.
Learn more about nuclear safety.
Exelon Nuclear is a business unit of Exelon Generation and operates the largest nuclear fleet in the nation. Exelon Nuclear operates 10 nuclear plants - containing a total of 17 reactors - in Illinois, Pennsylvania and New Jersey. Exelon also has ownership interest in four other nuclear plants.
- Exelon-Operated Nuclear Plants
Braidwood Generating Station, Exelon's newest nuclear power station, is located in northeastern Illinois, about 60 miles southwest of Chicago in Will County. The 2-unit station is built on a 4,457-acre site and its cooling lake was formed from scarred farming land and an old strip mine.
35100 South Route 53
Braceville, Illinois 60407-9619
Byron Generating Station is located near Byron in northern Illinois, about 110 miles west of Chicago. It’s a 2-unit nuclear power facility that can produce enough electricity to power more than 2 million average American homes.
4450 North German Church Road
Byron, Illinois 61010-9794
Located in Lusby, Md., Calvert Cliffs Unit 1 began generating electricity in 1975 and Unit 2 joined the system in 1977. Since then, Calvert Cliffs has continually set records for power production and worker safety.
1650 Calvert Cliffs Parkway
Lusby, Maryland 20657
Clinton Power Station, one of Exelon's newest nuclear power plants, is located in central Illinois. The unit can produce enough energy to power about 1 million average American homes.
Dresden Generating Station, located in rural Grundy County in northern Illinois, is home to the nation’s first full-scale, privately financed nuclear power plant, which began operation in 1960. The 2-unit facility can produce enough energy to power more than 1.5 million average American homes.
6500 North Dresden Road
Morris, Illinois 60450-9765
LaSalle County Generating Station is located in rural LaSalle County in northern Illinois, about 75 miles southwest of Chicago. The station is built on a 3,055-acre site with a 2,058-acre man-made cooling lake, which is also a popular fishery managed by the Illinois Department of Natural Resources.
2601 North 21st Road
Marseilles, Illinois 61341-9757
Limerick Generating Station is located in southeastern Pennsylvania, about 20 miles northwest of Philadelphia in Montgomery County. The station is built on a 600-acre site and draws its cooling water from the Schuylkill River.
3146 Sanatoga Rd.
Pottstown, Pennsylvania 19464
Unit 1 is a 620 MW reactor that entered service in 1970 and Unit 2 is a 1,138 MW reactor that began operation in 1988. As part of the company’s balanced growth initiative, Constellation Energy purchased Nine Mile Point in 2001 from Niagara Mohawk Power Corporation and other utilities. Constellation Energy Nuclear Group, a joint venture between Constellation Energy and EDF Group, owns 100 percent of Unit 1 and 82 percent of Unit 2. Long Island Power Authority owns 18 percent of Unit 2. Constellation Energy owns 50.01 percent of CENG. EDF owns 49.99 percent of CENG.
Oyster Creek Generating Station is located in Lacey Township, Ocean County, near the New Jersey shore. Oyster Creek began operating in 1969 as the first large-scale commercial nuclear power plant in the United States. Its single boiling water reactor produces 645 net MW, enough to power 600,000 average American homes.
Route 9 South PO Box 388
Forked River, New Jersey 08731
Peach Bottom Atomic Power Station, located on the west bank of the Conowingo Pond (Susquehanna River) in Delta, Pennsylvania, is a two-unit nuclear generation facility that powers two million area homes. The plant's two reactors began operation in 1974 and produce a total of 2,280 megawatts.
Quad Cities Generating Station is a dual-unit boiling water reactor nuclear power plant located in Cordova, Illinois. Built on 765-acre site along the Mississippi River, this combined production is enough electricity to power more than 1.5 million average American homes.
22710 206th Avenue North
Cordova, Illinois 61242-9740
R.E. Ginna Nuclear Power Plant is located on 426 acres along the south shores of Lake Ontario in Ontario, NY - about 20 miles northeast of Rochester and 53 miles southwest of Constellation Energy’s Nine Mile Point Nuclear Station. Constellation Energy bought Ginna, a pressurized one-unit water reactor on June 10, 2004. Constellation Energy Nuclear Group, a joint venture between Constellation Energy and EDF Group, owns 100 percent of R.E. Ginna Nuclear Power Plant. Constellation Energy owns 50.01% of CENG. EDF owns 49.99% of CENG.
Three Mile Island is located in central Pennsylvania, about 10 miles south of Harrisburg, in Londonderry Township. The station is built on an island in the Susquehanna River. The plant is capable of generating enough energy to power over 800,000 average American homes.
Route 441S P.O. Box 480
Middletown, Pennsylvania 17057
Zion Station is a former nuclear generating facility that has been converted into an electrical grid voltage-stabilizing facility. It is located on the western shore of Lake Michigan in the Northeast Illinois community of Zion. After more than 20 years of operation, Zion's two reactors were permanently shut down on January 15, 1998.
- Ownership Interest Nuclear Plants
Salem Generating Station
Salem Nuclear Power Plant is located in Hancocks Bridge, N.J. about 18 miles south of Wilmington, Del. It’s a 2-unit nuclear power facility that can produce enough electricity to power more than 2 million average American homes. PSEG owns 57% of Salem, Exelon Corporation owns the remaining 43%.
Hancocks Bridge, New Jersey