Nicor Gas
Website   https://nicorgas.com
All emergencies: please call 1-888-642-6748
Residential and Business: 888-Nicor4U (1-888-642-6748)

Com ED

Website     https://www.comed.com/

All emergencies: 1-800-Edison-1

Residential: 1-800- Edison-1 (1-800-334-7661)

Spanish: 1-800-95-Luces (1-800-955-7661)

Business: 1-877-4-ComEd-1 (1-877-426-6331)