ALLETE to Announce First Quarter Financial Results on May 2

ALLETE, Inc. (NYSE:ALE) will announce its financial results for the
first quarter before the stock markets open on Thursday, May 2, 2019.

Following the release, ALLETE Chairman and Chief Executive Officer Alan
R. Hodnik, President Bethany M. Owen, 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 and discuss other factors affecting performance during a
conference call beginning at 10:00 a.m. Eastern time.

Interested parties may listen to the conference live by calling (877)
303-5852, pass code 8686276 or by accessing the webcast on ALLETE’s Web
site, www.allete.com.

A replay of the call will be available through May 6, 2019 by dialing
(855) 859-2056, pass code 8686276. 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, based in Bismarck, N.D.; and has an 8 percent equity
interest in the American Transmission Co. More information about ALLETE
is available at www.allete.com.
ALE-CORP

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