BBB Accredited Business Profile

Constellation Energy Services, Inc.

Constellation Energy Services, Inc.

(312) 681-1866

Constellation Energy Services, Inc.

22 years in business

20 N. Wacker Drive
Chicago, IL 60606-3002

Fax Numbers
  • (312) 681-1996
  • (920) 272-4170
Additional Email Addresses
BBB File Opened: 07/21/1994
Business Started: 07/21/1994
Business Started Locally: 07/21/1994
Business Incorporated: 04/24/1998 in WI
Type of Entity
Business Management
  • Principal: Ms. Glenda O'Bannon, Call Center Operations Coordinator
Contact Information
  • Principal: Ms. Glenda O'Bannon, Call Center Operations Coordinator
Business Category
  • Natural Gas Companies
  • NAICS: Natural Gas Distribution
  • Electric Companies

Additional Information
  • Related Companies- Peoples Energy Corporation is the parent for this wholly owned subsidiary. Peoples Gas is also a wholly owned subsidiary of Peoples Energy Corporation and is a utility company which supplies gas. Peoples Energy Services, Peoples Energy, and Peoples Gas are each separate companies.

Alternate Business Names
  • Integrys Energy Services, Inc.
  • Integrys Energy Services


BBB Reason for Ratings

BBB rating is based on 13 factors: Get the details about the factors considered.

Based on BBB files, this business has a BBB Rating of No Rating. The reason is as follows:
Complaints against this business are handled by another BBB.

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BBB reports on known significant government actions involving the business's marketplace conduct.

BBB reports on a company that is out of business for three years from the date the company closes its doors or ceases to do business.

BBB reports on unauthorized use of the Better Business Bureau's name and/or logo for as long as the business continues to use it in any advertising, or for one year after the business ceases any repeated unauthorized uses.

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BBB reports when mail sent to the business was returned by the Postal Service.

Constellation Energy Services, Inc.

Constellation Energy Services, Inc.


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