1. Fourth Quarter 2008 Fact Sheet
December 31, 2008, Earnings by Segment (Millions)
Electric
Utility, $92.6 Segment
Natural Gas Electric Utility $ 92.6
Utility, $84.5
Natural Gas Utility 84.5
Integrys Energy Services (61.5)
Holding Integrys Holding Company & Other 10.8
Company & Energy
Other, $10.8 Services, Total Earnings $126.4
($61.5)
Moving Forward
Integrys Energy Group, Inc. is a leading regional energy company • January 2009 - Charles Schrock is named President and CEO of
focused on providing customers with the best value in energy and Integrys Energy Group. Larry Weyers will remain as Executive
related services, employees with a rewarding place to work, and Chairman of the Board as a long-range succession plan is
shareholders with a solid return on their investment. The holding implemented.
company is headquartered in Chicago, and its stock trades on the New • January 2009 - The Michigan Public Service Commission
York Stock Exchange under the symbol “TEG.” As of December 31, approved a $6 million, or 1.9%, increase in natural gas delivery
2007, Integrys Energy Group served approximately 1,674,000 rates for Michigan Gas Utilities. Rates were effective January 14,
regulated natural gas utility customers and approximately 485,000 2009. This was the first increase since 2003.
regulated electric utility customers. • December 2008 - The Public Service Commission of Wisconsin
approved new electric and natural gas rates for Wisconsin
Integrys Energy Group’s wholly owned subsidiaries provide products customers of Wisconsin Public Service, effective January 1, 2009.
and services in regulated and nonregulated energy markets. Electric rates remained at the current level and natural gas rates
dropped slightly. A $48 million fuel surcharge was rolled into base
The six regulated utilities include: rates, and the WPS Revenue Stabilization Mechanism was also
• The Peoples Gas Light and Coke Company, a natural gas utility approved.
serving approximately 819,000 customers in the city of Chicago. • December 2008 - Weston 4 named POWER magazine’s “Power
• Wisconsin Public Service Corporation, an electric and natural Plant of the Year” and Power Engineering magazine’s “Best Coal-
gas utility serving approximately 436,000 electric customers and Fired Project of the Year.”
316,000 natural gas customers in northeastern Wisconsin and an • October 2008 - Minnesota Energy Resources received approval
adjacent portion of Michigan's Upper Peninsula. from the Minnesota Public Utilities Commission to raise interim
• Minnesota Energy Resources Corporation, a natural gas utility natural gas rates by $19.8 million, or 5.74%, effective
serving approximately 210,000 customers throughout Minnesota. October 1, 2008.
• Michigan Gas Utilities Corporation, a natural gas utility serving
approximately 166,000 customers in lower Michigan.
• North Shore Gas Company, a natural gas utility serving Analysts Following Integrys Energy Group:
approximately 158,000 customers in the northern suburbs of Citigroup Faisel Khan
Chicago.
Edward Jones Brian Youngberg
• Upper Peninsula Power Company, an electric utility serving
Hilliard Lyons David Burks
approximately 52,000 customers in Michigan's Upper Peninsula.
J.P. Morgan Andrew Smith
The company's principal nonregulated subsidiary is: Power Insights Maurice May
• Integrys Energy Services, Inc., a diversified nonregulated energy Robert W. Baird Dave Parker
supply and services company serving residential, commercial, Standard & Poor’s Chris Muir
industrial, and wholesale customers in developed competitive Value Line Paul Debbas
markets in the United States and Canada.
As a regional energy leader, Integrys Energy Group is focused on December 31, 2008, Financial Statistics:
providing reliable customer service while continuing to build and
Common stock price $42.98
enhance its core regulated utility operations and complementary non-
regulated energy services business. 52-week price range $36.91-$53.92
Trailing 12-month dividend $2.68
Integrys Energy Group expects to generate operating improvements Current quarterly dividend rate $0.68
that benefit customers through sharing best practices, eliminating
Quarterly diluted earnings per share $0.33
redundancies, and capturing efficiencies that will use employees’
creativity and benefit the combined company’s shareholders. Book value per share $40.79
Market capitalization $3.3 billion
Recent Accomplishments: Average basic common shares outstanding 76,657,967
• February 2009 - Integrys Energy Group’s Board of Directors Dividend yield at December 31, 2008 6.24%
approved a quarterly dividend of $0.68 per share on common
stock, payable on March 20, 2009, to shareholders of record
February 27, 2009. We have paid dividends for 69 consecutive
years and increased our dividend for 51 consecutive years.

2. Twelve-Month Relative Price Performance Through February 13, 2009
Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb
TEG = Integrys Energy Group, Inc. SP500 = S&P 500
IXIC = Nasdaq Composite DJIA = Dow Jones Industrial Average
Celebrating 51 consecutive years of dividend increases
Dividends per share
$2.80 $2.72
$2.68
$2.70
$2.56
$2.60
$2.50
$2.40
$2.30 $2.24 $2.28
$2.20
$2.20 $2.12 $2.16
$2.10 $2.04 $2.08
$2.00
$2.00
$1.90
99
00
01
02
03
04
05
06
07
08
E
09
19
20
20
20
20
20
20
20
20
20
20
Integrys Energy Group
Credit Ratings as of December 31, 2008 Standard & Poor's Moody's
Corporate credit rating A- N/A
Senior unsecured debt BBB+ A3
Commercial paper A-2 P-2
Credit facility N/A A3
Junior subordinated notes BBB Baa1
Stock Investment Plan
We offer a Stock Investment Plan (SIP) for the direct purchase of our common stock. The SIP offers dividend reinvestment and an optional cash
payment feature. For more information, see our Web site at www.integrysgroup.com. Click on Investors and then Stock Investment Plan.
For more information: Stock Exchange Listing: New York Stock Exchange
Investor Relations: Ticker Symbol: TEG
Steven P. Eschbach, Vice President – Investor Relations Listing Abbreviation: IntegrysEngy
(312) 228-5408 speschbach@integrysgroup.com Transfer agent and registrar:
Donna M. Sheedy, Manager – Investor Relations American Stock Transfer & Trust Company, LLC
(920) 433-1857 dmsheedy@integrysgroup.com 59 Maiden Lane
New York, NY 10038
Toll-free: (800) 228-6888 www.integrysgroup.com/investor (800) 236-1551
Integrys Energy Group, Inc.
130 East Randolph Drive
Chicago, IL 60601
312-228-5400
www.integrysgroup.com
This fact sheet is prepared primarily for the information of our investors and is not given in connection with the sale of any security or offer to sell or buy any security.