| Business | Phone |
| Ampere Electrical Corp 4615 Harlem Ave, Berwyn 60402 | (708) 788-4600 |
| Aspire Electric Llc 3010 Wisconsin Ave, Berwyn 60402 | (708) 749-9050 |
| Flash Electric 1536 Elmwood Ave, Berwyn 60402 | (708) 749-9511 |
| Decor Lighting Retrofit Inc 3009 Maple Ave, Berwyn 60402 | (708) 749-7100 |