| Business | Phone |
| Clean Energy Systems 16000 Driver Rd, Bakersfield 93308 | (661) 399-9684 |
| Delta Testing Svc Inc 5880 District Blvd, Bakersfield 93313 | (661) 397-5995 |
| Power Systems Testing Co Bakersfield 93301 | (661) 631-8343 |
| Power Tech 3216 State Rd, Bakersfield 93308 | (661) 393-0875 |