| Business | Phone |
| Gord Gregory Electric Ltd 129 Windward St, St Catharines L2M 4C7 | (905) 934-7282 |
| Gore Electric 99 Elma St, St Catharines L2N 6Z8 | (905) 937-6668 |
| Roy Wormald Electric Ltd 36 Duncan Dr, St Catharines L2N 3P2 | (905) 934-1997 |
| J Cyr Electric 174 Louth St, St Catharines L2S 2R3 | (905) 685-1078 |
| J Mc Namara Electric 23 Chestnut Lane, St Catharines L2T 1G3 | (905) 680-1969 |
| James Electric 10 University Cir, St Catharines L2T 4B4 | (905) 988-1322 |
| John Scholl Electric 67 Louth St, St Catharines L2S 2T7 | (905) 682-2204 |
| Karl-Henry's Svc 113 1/2 Dufferin St E, St Catharines L2R 2A2 | (905) 682-7533 |
| Kraun Electric Inc 47 Wright St, St Catharines L2P 3J5 | (905) 684-6895 |
| Luco Electrical 30 Michelle Dr, St Catharines L2S 3J7 | (905) 682-5820 |
| Prime Electric Inc 197 Russell Ave, St Catharines L2R 1W9 | (905) 687-9814 |
| Rhodes Electric & Lighting 226 Merritt St, St Catharines L2T 1J6 | (905) 227-5356 |
| Bcr Electric 37 Bendingroad Cres, St Catharines L2N 5R4 | (905) 935-0154 |
| Black & Mc Donald Ltd 530 Eastchester Ave E, St Catharines L2M 7P3 | (905) 687-9033 |
| Blenkhorn & Sawle Ltd 100 Grantham Ave S, St Catharines L2P 3H2 | (905) 684-9251 |
| Security Electric 66 Greenwood Ave, St Catharines L2P 1X8 | (905) 682-3789 |
| State Group Industrial 11 Cushman Rd, St Catharines L2M 6S6 | (905) 685-7108 |
| Felice Electrical Ltd 8 Endicott Dr, St Catharines L2S 3R6 | (905) 684-6116 |
| Total Electric 36 Scott St W, St Catharines L2R 1C9 | (905) 682-6166 |
| Trimax Electric 7 Janet Crt, St Catharines L2S 1A5 | (905) 688-4620 |
| Fairchild Electric-Home Mntnc 5 Dunvegan Rd, St Catharines L2P 1H3 | (905) 988-5753 |
| Wittig Electric 533 Carlton St, St Catharines L2M 4X6 | (905) 935-3740 |
| Woods Electrical Contractors 108 Chetwood St, St Catharines L2S 2A8 | (905) 685-8612 |
| Ecco Electric Ltd 47 Wright St, St Catharines L2P 3J5 | (905) 984-8544 |
| Canal Marine 157 Cushman Rd, St Catharines L2M 6T4 | (905) 685-9293 |
| Coholan Electric 79 Ridley Rd #3, St Catharines L2S 4B6 | (905) 684-6001 |
| Corrol Technologies 22 Perma Crt, St Catharines L2R 7K8 | (905) 687-8241 |
| D Propper Electric 47 Huntley Cres, St Catharines L2M 6E5 | (905) 937-2059 |
| Denny's Electric 34 Goodman Cres, St Catharines L2S 3Z5 | (905) 687-8515 |
| Dualpower Electrical Contr 6 Wright St, St Catharines L2P 3J3 | (905) 641-7566 |
| Em-Cor Electric Inc 4 Robertson Pl, St Catharines L2P 3G2 | (905) 682-6869 |
| F Bergsma & Sons Ltd Plbg Htg 178 Niagara St, St Catharines L2R 4L9 | (905) 684-4286 |
| Ferran Electric Niagara Inc 17 Boese Crt, St Catharines L2N 7E7 | (905) 934-8899 |
| Flash Electric 57 Tremont Dr, St Catharines L2T 3Y9 | (905) 685-8180 |
| G E Galbraith Electric Ltd 3 Seapark Dr, St Catharines L2M 6S5 | (905) 685-7379 |