Tools to Help You Navigate Our Procurement Process
Constellation's suppliers are committed to the environment, safety, 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.
These documents are intended for the sole use of Constellation and its suppliers. To open these files, you may need the Adobe Reader.
Click the video below to learn how to use Maverick LIVE in app support.
Supplier Onboarding and Registration
Supplier Portal – Master Data
Supplier Portal – Transactions
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.
Accounts Payable Invoicing Guidelines
AP Invoicing Guidelines
Accounts Payable Inquiries
8:00 - 5 pm ET, Monday through Friday
invoiceinquiryteam@constellation.com
667-218-7667
Invoice Processing
If not enrolled in Electronic Invoicing, Constellation’s preferred method of invoice submittal is through our Oracle Supplier Portal. Contact SupplierMgmtTeam@constellation.com to get access.
Technical Support - EDI & eInvoicing
electronicinvoiceteam@constellation.com
Supplier Development and Engagement
ConstellationSupplier@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.
Has your business changed? Do you offer new products or services that we should know about?
Has your business changed? Do you offer new products or services that we should know about?