Suppliers

LATEST UPDATES

Supplier Code of Conduct

Constellation updated the Supplier Code of Conduct, which remains a critical step in strengthening the way we work with our suppliers. This update isn't just about streamlining a document – it's about enabling Constellation and our suppliers to work side by side with greater transparency and alignment. Clear expectations lead to stronger trust, faster execution, and more resilient relationships across our entire supply chain.

The updated version is more concise, written in clear bullet points, and designed for action. By simplifying the language, we make it easier for suppliers at every level to understand our expectations, embrace our values, and put them into practice. The Supplier Code of Conduct continues to outline 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.

Supplier Actions

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

Constellation & Calpine Integration

Constellation's acquisition of Calpine is now complete, and Calpine is operating as a Constellation business unit guided by shared values and strategy. While integration will continue through 2027, your existing relationships and contracts will remain the same, and no action is needed on your part.

What Current Suppliers Can Expect

• No Immediate Changes to Invoicing
  • Continue submitting invoices as normal
  • For Constellation invoicing questions, refer to the AP Invoicing Guidelines
  • For Calpine invoicing questions, email apinquiries@calpine.com
    
    
• No Immediate Changes to Point of Contacts
  • Continue working with your current contact, who will inform you of any future updates

For more information, read our Integration - Supplier FAQ.

Constellation System Updates

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.