Integrys Energy Services is one of the fastest growing competitive energy companies in North America. Its rapid growth is the result of an intense focus on its mission to provide customers with the best value in energy and related services. Integrys Energy’s customer-focused way of doing business means it provides individualized energy supply solutions, structured products, and customized strategies that allow customers to manage their energy needs while capitalizing on opportunities resulting from deregulation. In addition to owning, operating and managing physical plant assets, Integrys Energy Services also serves residential, commercial, industrial, and wholesale customers in 23 states in the United States and 6 Canadian provinces.

About Integrys Energy Group, Inc.
Integrys Energy Group, Inc., headquartered in Chicago, Illinois, is a holding company for energy related subsidiaries, which includes regulated utilities and nonregulated subsidiaries. The nonregulated subsidiary is Integrys Energy Services, Inc. The six regulated utilities consist of:

• The Peoples Gas Light and Coke Company is a natural gas utility serving more than 840,000 customers in the City of Chicago.
• North Shore Gas Company is a natural gas utility serving approximately 158,000 customers in the northern suburbs of Chicago.
• Wisconsin Public Service Corporation is an electric and natural gas utility serving approximately 429,000 electric customers and 312,000 natural gas customers in northeastern Wisconsin and an adjacent portion of Michigan's Upper Peninsula.
• Upper Peninsula Power Company is an electric utility that serves approximately 52,000 customers in Michigan's Upper Peninsula.
• Michigan Gas Utilities Corporation is a natural gas utility serving approximately 166,000 customers in lower Michigan.
• Minnesota Energy Resources Corporation is a natural gas utility serving approximately 207,000 customers throughout Minnesota.