Latest Updates

In January 2024 our organization transitioned to Oracle for our financial systems, including accounts payable. This marks an exciting step forward for our new company. With this update, we aim to provide a more efficient and streamlined process for our suppliers. By implementing Oracle, our suppliers will benefit from enhanced features and tools that will make their invoicing process easier and more convenient. One of the key highlights is the supplier portal, which we strongly encourage our suppliers to utilize for all their invoicing needs.

The supplier portal offers a user-friendly interface where suppliers can easily submit their invoices, track payment status, and access important information. This centralized platform ensures faster processing times, reduces errors, and enhances communication. Additionally, the supplier portal provides real-time visibility into invoice status, allowing suppliers to have greater control and transparency over their invoicing process. It also enables suppliers to electronically submit and manage their invoices.

We believe that by embracing Oracle and utilizing the supplier portal, our suppliers will experience improved efficiency in their interactions with our company. We look forward to strengthening our relationship with our valued suppliers and achieving mutual success through these enhanced financial systems updates.

Supplier Actions

Additional Resources, including Training & Reference Guides, can be found on our Current Suppliers page.

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 Inquiries
​​​​​​​​8 am - 5 pm ET​, Monday through Friday
invoiceinquiryteam@constellation.com
667-218-7667

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

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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Register here as a 'Payment-only' vendor who is not providing contracted Services or Materials.

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