Integrys Energy Group, Inc. Announces First Quarter 2008 Earnings Conference Call

CHICAGO, April 25 /PRNewswire-FirstCall/ -- On Thursday, May 8, at 8:00 a.m. CDT, the executive management of Integrys Energy Group, Inc. (NYSE:TEG), will host a conference call to review 2008 first quarter financial results, as well as prospects for 2008. The associated earnings release will be issued after market close on May 7. A packet of detailed financial information will be available on the Integrys Energy Group web site on May 8, at approximately 6 a.m. CDT.

To access the conference call, which is open to the public, call 888-690-9634 (toll free) 15 minutes prior to the scheduled start time. Callers will be required to supply EARNINGS as the passcode and MR. STEVEN ESCHBACH as the leader. Callers will be placed on hold with music until the call begins.

Integrys Energy Group will webcast the event live at http://www.integrysgroup.com/investor/presentations.aspx.

If you are unable to participate in the live event, the rebroadcast of the complete conference call will be available for replay from 10:00 a.m. CDT on May 8, 2008, until August 5, 2008. To access the replay, call 800-947-6332 (toll free). An archive of the webcast will also be available on the company's web site at http://www.integrysgroup.com/investor/presentations.aspx.

About Integrys Energy Group, Inc.

Integrys Energy Group, Inc. (NYSE:TEG), headquartered in Chicago, Illinois, is a holding company for energy related subsidiaries, which includes regulated utilities and nonregulated subsidiaries.

The six regulated utilities consist of:

-- The Peoples Gas Light and Coke Company, a natural gas utility serving
approximately 830,000 customers in the City of Chicago.
-- Wisconsin Public Service Corporation, an electric and natural gas
utility serving approximately 433,000 electric customers and 314,000
natural gas customers in northeastern Wisconsin and an adjacent
portion of Michigan's Upper Peninsula.
-- Minnesota Energy Resources Corporation, a natural gas utility serving
approximately 207,000 customers throughout Minnesota.
-- Michigan Gas Utilities Corporation, a natural gas utility serving
approximately 165,000 customers in lower Michigan.
-- North Shore Gas Company, a natural gas utility serving approximately
158,000 customers in the northern suburbs of Chicago.
-- Upper Peninsula Power Company, an electric utility serving
approximately 52,000 customers in Michigan's Upper Peninsula.

The company's principal nonregulated subsidiary is:

-- Integrys Energy Services, Inc., a diversified nonregulated energy
supply and services company serving residential, commercial,
industrial, and wholesale customers in developed competitive markets
in the United States and Canada.

More information about Integrys Energy Group, Inc. is available online at http://www.integrysgroup.com/.

First Call Analyst:
FCMN Contact:

Source: Integrys Energy Group, Inc.

CONTACT: Donna M. Sheedy, Manager, Investor Relations of Integrys Energy
Group, Inc., +1-920-433-1857

Web site: http://www.integrysgroup.com/

2008-04-25 17:36:06 0345696 PRNEWSWIRE