Existing TVA Supplier

We value our relationship with you, and have provided information and applications to help you effectively manage your contract with TVA.

On January 19, 2022, the Maximo Supplier Portal will require users to login using Multi-factor Authentication (MFA). Without MFA, you will not be able to access the Maximo Supplier Portal application. Users can set up MFA using a digital token which generates MFA notifications on-demand. Information on how to download and setup your digital token can be found in our MFA instructions.

Supplier Portal

TVA’s Supplier Portal is an EAM/Maximo system for contracted suppliers to view/update purchase orders, enter subcontracting accomplishments, respond to eRFQs, update limited company information and more.

Login to Maximo


IQNavigator is a Vendor Management System (VMS) commonly used for staff augmentation or managed tasks contracts. For questions, contact your TVA sourcing representative or email TVA’s Contractor Workforce Management at [email protected].


Use InvoiceQuery (VIQS) to search by your company ID or purchase order number to view related invoice and payment information. If interested, request access to VIQS by emailing [email protected].

Web Contractor Security System (WCSS)

Suppliers coming onsite to perform work at TVA must check each employee/contractor through WCSS to verify suitability criteria and check for employment restrictions before access will be granted.

Safety and Health Plan

TVA expects all suppliers perform work at TVA to submit a plan at least 30 days prior to beginning work onsite to ensure a safety management system is in place.

Transportation Planning

Learn TVA’s expectations for suppliers transporting material domestically, internationally and in cases of emergency—or connect with a TVA transportation representative. Click here to learn more about TVA Transportation Planning.

TVA Clean Air Agreements

Learn about TVA Clean Air Agreements that may affect your business.

Instructions for Electronic Funds Transfer to TVA

Click here to view resources.