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Existing Suppliers

Need to update information or have a question? We’re here for you. Select the appropriate option below.

Invoice Inquiries

If you have a question about an open invoice, outstanding payment, or need to submit a W-9, start here.

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Banking Changes

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Supplier Questions

Have a question about doing business with us not related to registration or payment? Feel free to ask.

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Looking to Start Doing Business with AEP?

We recognize that a strong, diverse supplier community is essential to economic vitality and look to conduct business with competitive, diverse suppliers. Take the first step by registering through our Ariba system.

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