California has 116 listed contractors handling data center medium- and high-voltage electrical work — one of the deeper specialist benches in the country. Every firm below is in the DataCenterUPS directory; inclusion cannot be bought. Compare them directly, or get matched with 3 qualified California firms free (30 seconds, no spam).
How to hire for electrical (mv/lv) in California
- Require NETA acceptance-testing documentation on switchgear work.
- Ask about concurrent-maintainability experience — servicing power equipment without dropping load.
- Confirm arc-flash study capability in-house or through a named partner.
- Look for utility-interconnection references, not just interior fit-out work.
Electrical (MV/LV) contractors in California (116)
- 5 Star Electric San Jose
- A1 Electrical Inc
- Absolut Electric, Inc.
- Ace Breakers Controls & Distribution., Inc.
- ACVolt Electric LLC – San jose electrician
- Adept Electrical Solutions
- Alchemy Data Center LLC
- Alpha Omega Electric
- Americano Electrical Solutions LLC
- Applied Engineering Concepts
- ARC Electrical Service
- Astral Electrical Contractor
- Avant Electric Inc.
- Bay Power Roseville
- Bay Power San Jose
- Beach Electrical LLC
- Bear Electrical Solutions
- Blue Moon Electrical
- Butcher Power Products
- CA Electrical Group 24/7
- California Electrical Solutions
- Case Electric Inc
- Castillo Electric Distribution
- CBF Electric & Data
- CED Bay Area San Jose
- Chandler Electric
- Circuit Breaker Source | Circuit Breaker Buyers
- CNC Electric Wholesales
- Coastside Circuit Breakers LLC.
- COIL
- Contractors Electrical Distributors
- Corporate Electric
- Critical Electric Systems Group
- CSI Electrical Contractors, Inc.
- Cupertino Electric Inc
- D&S Electric Group
- Dalcon Electric
- Data Center And Colocation
- Data Electric
- Data Specialties Inc.
- Datax Electric
- Delta Power, Inc
- Digico IT
- Digico Wiring and Installation
- DKS Electric Inc
- DP Air Los Angeles
- DT Electric
- Ducros Electrical Contracting and Design Inc.
- Dynalectric Los Angeles
- Dynamic Power Group
- Electric Medics
- Electric Wire Services
- Electrical Garage
- Electrical Help
- Electrical Land
- Electrical Surplus Buyers
- Elite Power Inc.
- Esquared Electric Inc
- ESSCO
- Express Electrical Services
See all 116 California contractors →
FAQ
What certifications matter for data center electrical contractors?
NETA-certified testing, documented arc-flash programs, and OSHA safety records are baseline. For utility-scale work, look for medium-voltage termination credentials.
What does data center electrical work cost?
Wide range by scope — distribution work runs far above commercial rates because of redundancy (N+1/2N) and live-load constraints. Get at least three quotes; our free matching does this in one step.
Ready for quotes? Get matched with up to 3 vetted California contractors — free, 30 seconds.