WEC Energy Group, Inc. mailing address
To mail a letter to WEC Energy Group, Inc., an electric & natural-gas utility serving Wisconsin, Illinois, Michigan, and Minnesota, send it to the correspondence address at WEC Energy Group, Inc., 231 West Michigan Street, P.O. Box 1331, Milwaukee, WI 53201. WEC Energy Group is a utility holding company whose subsidiaries (including We Energies) deliver electricity and natural gas across Wisconsin, Illinois, Michigan, and Minnesota. This is WEC Energy Group, Inc.'s publicly listed correspondence address — for billing disputes, service requests, account closures, and formal notices. It's not the address utilities use for bill-payment remittance; use the PO Box printed on your own bill for payments. Add your return address if you'd like a reply, and confirm this address on WEC Energy Group, Inc.'s official contact page before anything time-sensitive.
WEC Energy Group, Inc. — correspondence address
WEC Energy Group, Inc. 231 West Michigan Street, P.O. Box 1331 Milwaukee WI 53201
Written correspondence — billing disputes, service requests, account closures, and formal notices. Not the separate address used for bill-payment remittance; use the payment stub or PO Box printed on your own bill for that.
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Your return address
WEC Energy Group, Inc.231 West Michigan Street, P.O. Box 1331Milwaukee, WI 53201
Your letter, printed and mailed for you.
Key facts
- This is WEC Energy Group, Inc.'s correspondence mailing address, taken from the utility's own contact page.
- WEC Energy Group, Inc. is an electric & natural-gas utility serving Wisconsin, Illinois, Michigan, and Minnesota.
- Use it for letters, disputes, service requests, and formal notices — not for bill payments, which go to a separate PO Box printed on your bill.
- Include your account number and service address so the utility can find your file.
- Include your return address and a reference number so the utility can respond.
- PostPal prints your letter and mails it for you — no printer, envelope, stamps, or post office trip.
How to send your letter
- 1
Decide what your letter is for
Use this address for written correspondence — a billing dispute, a service request, an account closure, or a formal notice. If you're mailing a cheque or payment, use the remittance address printed on your own bill instead; utilities almost always route payments to a separate PO Box.
- 2
Write your letter
Include your account number, your service address (if different from your mailing address), the outcome you're looking for, and your return address so WEC Energy Group, Inc. can respond.
- 3
Address it to the correspondence address
First line: WEC Energy Group, Inc.. Then the street: 231 West Michigan Street, P.O. Box 1331. Then the city line: Milwaukee WI 53201.
- 4
Send it with PostPal
Write or upload your letter to PostPal with the address above prefilled. We print it, add your return address, and mail it for you — no printer, envelope, stamps, or trip to the post office.
Common questions
What does WEC Energy Group, Inc. do?
WEC Energy Group is a utility holding company whose subsidiaries (including We Energies) deliver electricity and natural gas across Wisconsin, Illinois, Michigan, and Minnesota. It serves Wisconsin, Illinois, Michigan, and Minnesota. The address above is its correspondence address — the right place for account letters, disputes, and formal notices.
What is WEC Energy Group, Inc.'s mailing address?
WEC Energy Group, Inc., 231 West Michigan Street, P.O. Box 1331, Milwaukee, WI 53201. This is WEC Energy Group, Inc.'s publicly listed correspondence address. Confirm it on WEC Energy Group, Inc.'s official contact page before anything time-sensitive — utilities occasionally change offices and PO Boxes.
Can I mail my bill payment to this address?
Not usually. This is a correspondence address for letters, not the payment-processing address most utilities use for mailed cheques. Use the remittance address or PO Box printed on your own bill for payments, and this address for everything else — disputes, service requests, and written notices.
How do I dispute a charge or file a complaint by mail?
Write a clear, dated letter explaining the charge or issue, include your account number and any supporting documents, state what resolution you're asking for, and include your return address. Mailing it creates a dated paper record, which can help if the dispute escalates.
How do I close or transfer my account by mail?
Include your account number, the closing/transfer date, your forwarding address, and a phone number in case WEC Energy Group, Inc. needs to confirm details. Most utilities also offer this online or by phone, which is often faster if you're on a tight moving deadline — mail is best for a written record or when online/phone options aren't available.
How do I mail WEC Energy Group, Inc. a letter without a printer?
Write or upload your letter to PostPal with the address prefilled. We print it, add your return address, and mail it for you — no printer, stamps, or post office trip needed.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.