| Business | Phone |
| Commonwealth Edison Co 10 S Dearborn St 37, Chicago 60603 | (312) 394-4321 |
| Midwest Generation 440 S La Salle St 3500, Chicago 60605 | (312) 583-6000 |
| Moore Power Inc 720 W Schubert Ave, Chicago 60614 | (773) 472-4579 |
| Power Suasion Inc 400 E Randolph St, Chicago 60601 | (312) 777-1010 |
| Volaire Energy 875 N Michigan Ave, Chicago 60611 | (773) 794-7820 |
| Meade Electric Co 340 W 26th St, Chicago 60616 | (312) 567-0054 |
| Windy City Electric Co Inc 2110 S Marshall Blvd, Chicago 60623 | (773) 522-4358 |
| Maron Electric Co 5538 N Kedzie Ave, Chicago 60625 | (773) 267-0041 |
| Scana Corp 10727 S Eggleston Ave, Chicago 60628 | (773) 568-8402 |
| Jpc Electric 11844 S Oakley Ave, Chicago 60643 | (773) 238-5778 |
| Neemia Electric Co 3724 W Fullerton Ave, Chicago 60647 | (773) 276-7070 |