ALLETE to Announce 2017 Financial Results on February 15

DULUTH, Minn.–(BUSINESS WIRE)–ALLETE, Inc. (NYSE:ALE) will announce its financial results for 2017
before the stock markets open on Thursday, February 15, 2018.

Following the release, ALLETE Chairman, President and Chief Executive
Officer Alan R. Hodnik, Senior Vice President and Chief Financial
Officer Robert J. Adams, and Vice President, Controller and Chief
Accounting Officer Steven W. Morris will present an overview of results,
discuss 2018 earnings guidance, and other factors affecting performance
during a conference call beginning at 10 a.m. Eastern time.

Interested parties may listen to the conference live by calling (877)
303-5852, or by accessing the webcast on ALLETE’s Web site, www.allete.com.

A replay of the call will be available through February 19, 2018 by
dialing (855) 859-2056, conference identification number 9977768. The
webcast will be accessible for one year at www.allete.com.

ALLETE Inc. is an energy company headquartered in Duluth, Minnesota. In
addition to its electric utilities, Minnesota Power and Superior Water,
Light and Power of Wisconsin; ALLETE owns ALLETE Clean Energy, based in
Duluth; BNI Energy in Bismarck, North Dakota; U.S. Water Services in St.
Michael, Minnesota; and has an 8 percent equity interest in the American
Transmission Co. More information about ALLETE is available at www.allete.com.
ALE-CORP

Contacts

ALLETE, Inc.
Investor Contact:
Vince Meyer,
218-723-3952
[email protected]