Latest Updates

Fall 2022 Supplier Update – Upcoming Changes to Technologies and Processes

In February 2022, Exelon and Constellation became two strong, publicly traded companies. Over the next two years, Exelon and Constellation will perform technology enhancements to support the separation of Supply systems and processes between the two organizations.  Whether you are a supplier who works with Exelon, Constellation, or both, this communication is to make you aware of actions your company may need to take. Please watch out for important communications about new systems, processes, and requests to take action beginning this Fall and into the 2023-2024 timeframe.


Spin-Off Notice

We are very excited to share that on February 1, 2022, Exelon Corporation (“Exelon”) separated its regulated utility business and its generation and commercial business. The latter, Exelon Generation Company, LLC, and its subsidiaries, are now Constellation Energy Corporation, a publicly traded company.  Exelon Generation Company, LLC, has changed its name to Constellation Energy Generation, LLC (“Constellation”). This separation establishes Exelon as the nation’s largest fully regulated transmission and distribution utility company and Constellation as the largest carbon-free power producer paired with the leading customer-facing platform for clean energy solutions. All Contracts and Purchase Orders with Exelon or Constellation entities remain in full force and effect. If you are an Exelon supplier, you will continue to do business in the ordinary course.  If you are a Constellation supplier, please see this communication for more information.


COVID-19 Mask and Social Distancing Protocols for Contractors

4/26/2022  Announcement


Supplier Code of Conduct

Constellation values our business relationships with our Suppliers, and we count on you to help us fulfill our mission to provide clean, reliable, affordable energy and innovative energy products, and deliver the best service to our customers. Constellation approved a new Supplier Code of Conduct, which is now in effect. The Supplier Code of Conduct: (1) outlines Constellation’s expectations and standards for ethical conduct with which all Suppliers, their subcontractors, and their respective workforces must comply when working for or on behalf of Constellation; and (2) with this notice, becomes a part of the terms and conditions of the contract documents agreed to between Constellation and each of our Suppliers. Please review and apply its provisions to your workforce.


Supplier Quick Links

Vendors and Suppliers Affiliated With, or Referred, Recommended, or Requested by Public Officials Policy
The policy addressing vendors and public officials is located in the Ethics & Governance section of Constellation's website.

Accounts Payable Invoicing Guidelines
AP Invoicing Guidelines

Accounts Payable Inquiries
​​​​​​​​8 am - 5 pm ET​, Monday through Friday

Invoice Processing
​​If not enrolled in Electronic Invoicing (eInvoicing), Constellation’s preferred method of invoice submittal is by email​.

Technical Support - EDI & eInvoicing

Diverse Business Empowerment Group

General Inquiries
​For category manager contact information, please see our Category Manager Contact Information.
For corporate and media contacts, please visit our Contact Us page.
To report an ethics concern, please visit the Constellation Ethics Help Line.


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