At Constellation, we're building the clean, reliable energy capacity of tomorrow while generating power to meet the demands of today. From the data economy to electrification and onshoring, meeting the demand for reliable and clean power is the defining challenge of our generation – and one where we must win to secure America's energy future.
Our combination with Calpine has created a generation fleet that is one of a kind: dispatchable, reliable and the cleanest among the largest power producers in the U.S. Calpine is the largest owner and operator of both natural gas fired and geothermal power plants in the U.S., and together with the nation’s largest nuclear fleet, our combined company is the largest producer of reliable and clean energy, with a coast-to-coast presence. Calpine is a perfect complement to the work we do from both a generation and commercial perspective, and by combining our strengths, we’ll be poised to deliver more reliable, sustainable and cost-effective energy solutions to our customers.
Learn more about our Calpine business unit.
Constellation is the largest private-sector power producer, the largest producer of clean energy and the leading operator of nuclear power plants in the U.S., generating more 24/7, emissions-free electricity than any other company in the nation. With 55 gigawatts of capacity from nuclear, natural gas, geothermal, hydro, wind and solar facilities, our fleet has the generating capacity to power the equivalent of 27 million homes, providing about 10% of the nation's clean energy and delivering the around-the-clock reliability needed to power America's growing economy.
Learn more about our generation facilities.
Looking ahead, we are committed to extending the operational life of our nuclear fleet and increasing output through strategic uprates to power economic growth, support the data economy and help the U.S. win the AI race. Constellation is uniquely positioned to lead – cleanly and reliably powering the technologies critical to U.S. economic growth and national security.
Learn more about our business strategy.
We are also a leading competitive retail electric supplier, serving approximately 2.5 million customers – including more than three-fourths of the Fortune 100 companies – with a broad array of affordable, reliable and customizable energy solutions.
Learn more about our retail products and services.
We are deeply invested in workforce and community development, supporting education, workforce training, pre-apprenticeships and philanthropic causes, including grants, scholarships and employee volunteering, while maintaining the highest standards of corporate governance.
Learn more about how we power communities.
Constellation is more than a clean, reliable energy company – we lead with integrity, innovation and impact so we can serve our customers and communities as a trusted policy advocate and technology innovator. Whether empowering customers to meet their sustainability goals, strengthening and uplifting our communities, or collaborating with federal, state and local leaders to advance decarbonization, secure the grid or offer economic opportunity, we continue to focus on shaping a more sustainable and resilient energy future.
Learn more about our values and our commitment to sustainability principles.
Explore the milestones that have shaped Constellation's growth and leadership in clean, reliable energy – from our early beginnings in power generation to becoming the nation's largest producer of carbon-free power and a driving force in America's clean energy future.
