| اسم الشركة | البريد الالكتروني | الهاتف |
| Majis Industrial Services Company | enqui@miscoman.com | 24590900 |
| Oman Oil Industry Supplies and Services | info@ooiss.com | 24590061 |
| Oman Solar System Co | marketing@omansolar.com | 24592807 |
| Oman Water Treatment Company | owatco@omantel.net.om | 24446514 |
| Power Economy Middle East | 0 | |
| Product and Systems | info@apsco-oman.com | 24446459 |
| Sembcorp Salalah | ||
| Sohar Power Company | 24698498 | |
| Suez-Tractebel Operation and Maintenance Oman L.L.C | info@stomo.com.om | 26895100 |
| United Power Company | 24698498 |