Contact I&M

Residential customer service

1-800-311-6424

Mon to Fri, 7 a.m. to 7 p.m. ET

Power outage (24/7)

1-800-311-4634

Or text OUT to 50783 after enrolling

Corporate headquarters

One Summit Square
110 E. Wayne St., P.O. Box 60
Fort Wayne, IN 46801

Closest MI office

123 Portage Avenue
Three Rivers, MI 49093

Company fact sheet

Legal name
Indiana Michigan Power Co.
Parent
American Electric Power (NASDAQ: AEP)
Total customers
~600,000
Michigan customers
~130,000
Michigan counties
Berrien, Cass, St. Joseph
Owned generation
D.C. Cook Nuclear (~2,160 MW)
Regulator (MI)
MPSC + FERC
Grid operator
PJM

Quick actions

  • 1

    Start service

    Call 1-800-311-6424 at least 3 business days before move-in. Photo ID and SSN required.

  • 2

    Stop service

    Same line. Final bill goes to your forwarding address.

  • 3

    Report an outage

    Use 1-800-311-4634 or the I&M outage map at indianamichiganpower.com/outages.

See the outage map

Insider tip

A nuclear plant on your beach changes the cost structure

The Cook Nuclear Plant (two reactors, ~2,160 MW combined) sits on the Lake Michigan shore near Bridgman and produces baseload power at one of the lowest variable costs on the PJM grid. Cook's NRC operating licenses were extended in 2005 to 2034 and 2037 respectively, and AEP is studying a second extension to the 80-year mark.

What that means for you: I&M's residential supply mix is heavily nuclear, which insulates Michigan customers from the natural-gas price swings that hit DTE and Consumers Energy. When PJM capacity prices spike (as they did in the 2026 auction), I&M typically passes through a smaller fuel-clause adjustment than its eastern-MI peers. The trade-off is concentration risk: a single Cook outage moves the I&M bill more than it would on a more diversified portfolio.

Frequently asked questions

Can I pick a competitive supplier on I&M?
On the Michigan side, the same 10 percent retail-choice cap that applies to Consumers Energy and DTE also applies to I&M. The waitlist is essentially always full. On the Indiana side, retail choice is not offered at all.
Does I&M deliver natural gas?
No. I&M is electric-only. Natural gas in Berrien, Cass, and St. Joseph counties is delivered by SEMCO Energy Gas and Michigan Gas Utilities depending on the township.
My power is out. Who do I call?
I&M at 1-800-311-4634, 24 hours a day. Downed line? Call 911 first. Never call Consumers Energy or DTE for a southwest-Michigan outage; they do not control I&M wires.
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