Current Suppliers

Tools to Help You Navigate Our Procurement Process

Constellation's suppliers are committed to the environment, safety, diversity and transparency. The right business partners help create results that are off the charts. 

Constellation believes in seamless, transparent supply chain solutions. We welcome new suppliers that can help us meet our daily demands, future requirements, and support our emergency response efforts with innovative solutions. 

If you’re registered in our supplier database, you can manage your existing profile to keep us informed of any changes in your business. Information from profiles is integral to the process of determining bidder lists.

Manage your profile.

These documents are intended for the sole use of Constellation and its suppliers.  To open these files, you may need the Adobe Reader.

Nuclear Site Quality Assurance Documents (SQADs) that are attached to Constellation Purchase Orders are provided below. These documents include but are not limited to special QA documents. These documents are intended for the sole use of Constellation and its suppliers.

If you’re registered in our supplier database, you can manage your existing profile to keep us informed of any changes in your business. Information from profiles is integral to the process of determining bidder lists.

Manage your profile.

These documents are intended for the sole use of Constellation and its suppliers.  To open these files, you may need the Adobe Reader.

Nuclear Site Quality Assurance Documents (SQADs) that are attached to Constellation Purchase Orders are provided below. These documents include but are not limited to special QA documents. These documents are intended for the sole use of Constellation and its suppliers.

Supplier Quick Links

 

Accounts Payable Invoicing Guidelines

AP Invoicing Guidelines
 

Technical Support – SMART by GEP Online Sourcing Application

support@gep.com
USA: (732) 307-8731
 

Accounts Payable Inquiries

​​​​​​​​8:00 - 5 pm ET,​ Monday through Friday
invoiceinquiryteam@constellation.com
(312) 429-9303
 

Invoice Processing

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

 

Technical Support - EDI & eInvoicing

electronicinvoiceteam@constellation.com
 

Diverse Business Empowerment Group

supplier.diversity@constellation.com
 

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 Ethic Help Line​.

NEW SUPPLIER REGISTRATION

Create your sourcing​ profile here. It's a simple, quick, no-cost process. We're glad you'​re interested in​​ doing business with Constellation.

MANAGE YOUR SUPPLIER PROFILE

Has your business changed? Do you offer new products or services that we should know about?