• VSP

    Vendor Select Program

Updates


Energy Services

Company Contact Phone Number Address Website
Alternative Utility Services, Inc Hans Herrmann 800-392-4287 770 N Halsted
Suite 156
Chicago, IL 60642
www.ausenergy.com
Constellation Ron Michalski Ofc: 847-526-7247
Cell: 312-203-2394
20 N. Wacker Drive
Suite 200
Chicago, Il 60606
www.constellation.com

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