About Constellation

Constellation By The Numbers

Solar Energy - Clean Electricity


producer of carbon-free energy in the U.S.

Windmills - Carbon free energy


of the nation's carbon-free electricity

32,400 MW

of capacity consisting of nuclear, wind, solar, natural gas and hydro, enough to power 15 million homes

215 TWh

of power served to Commercial customers


of Fortune 100 companies count on us for their energy needs

About Constellation

We are the nation’s largest producer of carbon-free energy and a leading competitive retail supplier of power and energy products and services for homes and businesses across the United States. Headquartered in Baltimore, our generation fleet produces enough energy to power 15 million homes and is helping to accelerate the nation’s transition to clean energy with more than 32,400 megawatts of capacity and annual output that is 90 percent carbon-free.

Already the lowest carbon emitter of any major investor-owned U.S. generator, we have set a goal to eliminate 100 percent of our greenhouse gas emissions by leveraging innovative technology and enhancing our diverse mix of hydro, wind and solar resources, paired with the nation’s largest carbon-free nuclear fleet.

Our family of retail businesses serves approximately 2 million residential, public sector and business customers, including three-fourths of the Fortune 100. We are helping these customers reach their own climate goals through innovative clean energy solutions, including an upcoming, new Hourly Carbon-Free Energy Matching product.

To further advance the fight against the climate crisis and accelerate the transition to a carbon-free future, we have set own ambitious climate goals, including:

As we work towards these goals, we will continue to serve as a leading supporter of our communities through workforce development programs; philanthropy; volunteerism; and diversity, equity and inclusion initiatives; while maintaining the highest standards of corporate governance. Click here to learn more about our values and our deep commitment to Environmental, Social, and Governance (ESG) principles. 

Discover our history as a leader in the energy industry:



      Read More
      Read Less