Policies & Other Resources
Advancing Sustainability Policies
Constellation is powering America's clean and reliable energy future. Our fleet provides reliable and resilient energy to the grid, and our commercial business sells energy and related solutions to millions of customers, including businesses, homes and public-sector customers. We are committed to creating a better future for our communities through a culture that prioritizes operational efficiency, resource stewardship, community partnerships and innovative investments in the future. We strive to protect and restore the environment and enhance the daily lives of our customers, employees and communities by effectively managing our impacts to air, land and water.
We work with policymakers at all levels on securing the energy grid, providing clean and reliable energy options and developing economic opportunities for American families, businesses and communities.
Our commitment goes beyond clean energy generation – we aim to create a better future for all. Constellation reinforces this commitment through policy statements guided by our principles and a dedication to economic and environmental progress.
- Biodiversity Policy
- Climate Change Policy
- Environmental Justice Policy
- Environmental Policy
- Water Policy
Learn more about our ethics and compliance-related documentation, including our Code of Business Conduct on our Ethics & Compliance page.
Other Sustainability Resources
CDP Questionnaire
CDP is a not-for-profit charity that runs the global disclosure system for investors, companies, cities, states and regions to manage their environmental impacts. Read our response to the 2024 CDP questionnaire below.
Download CDP Questionnaire Response
Our External GHG Emissions Inventory Assurance Statement provides verification of our scope 1, 2 and 3 GHG emissions.
Download the External GHG Emissions Inventory Assurance Statement
The Governance, Oversight, Support, and Performance (GOSP) group maintains a robust EMS that, through annual audits, maintains certification of the Nuclear business unit to the Organization for Standardization (ISO) 14001:2015 standard. This certification covers the governance oversight support and performance activities over the non-radiological environmental program elements associated with the production of electricity from nuclear fission on station owned property.
Note: The certification does not cover the radiological environmental elements nor activities on leased property, approved right-of-ways, recreational areas, and substations and switchyards owned and/or operated by a third party.
Download Constellation-Nuclear-EMS-Certification
The 2025 Benchmarking Air Emissions of the 100 Largest Electric Power Producers in the U.S. Report is the 20th collaborative effort highlighting environmental performance and progress in the U.S. electric power sector. The report uses publicly reported data from 2022 to compare the emissions performance of the 100 largest power producers in the U.S.
According to the 2025 report, Constellation is the nation's largest producer of clean, carbon-free energy and has the lowest carbon dioxide emissions among the 20 largest private, investor-owned power producers in the U.S. for the 11th consecutive year. The next cleanest company in that group emitted nearly four-and-a-half times more carbon dioxide (lbCO2e/MWh) than Constellation.