- Alhambra Electric
- Alhambra Valley Electric
- Amber Electrical Svc
- Bay Area & Electric Inc
- Cal-Com Electric
- Comletric Inc
- Contra Costa Electric Inc
- Crockett Electric Co
- D B Electric
- Dawson Electric
- Delta Electrical Constrctn Inc
- Electrical & Plumbing Inc
- Forrest Electric
- Mulder Electric
- Newtron Inc
- Osh Electric
- Raines Electric Inc
- Roe's Construction & Elec Svc
- Shanahan Services
- Total Environmental & Power
- Walter Electrical Contractor
