| Business | Phone |
| Alliance Electrical Contr Po Box 4176, Chesterfield 63006 | (314) 205-9251 |
| S C Sachs Co Inc 16300 Justus Post Rd, Chesterfield 63017 | (636) 532-2000 |
| Powertech Electric Inc 159 Chesterfield Ind Blvd, Chesterfield 63005 | (636) 532-9495 |
| Loveland Electrical Svc Inc Chesterfield 63005 | (636) 519-0375 |
| Birkel Electric 178 Chesterfield Industrial Bl, Chesterfield 63005 | (636) 386-7000 |
| Challenge Electric 53 Millwell Ct, Chesterfield 63005 | (636) 449-6445 |