Generator Service, Maintenance & Load Testing
Northern California's trusted generator experts since 1988
Generator Service, Maintenance & Load Testing
Northern California's trusted generator experts since 1988
What We Do
01
Scheduled inspections that prevent the 2 AM call.
02
NFPA 110 compliant performance verification under full load.
03
24/7 dispatch with fully stocked service vehicles.
04
Diagnostics, overhauls, and rebuilds across every major brand.
05
ATS testing, maintenance, and repair for seamless failover.
06
Modern controls with remote monitoring on legacy equipment.
07
Real-time telemetry and alerts before failures happen.
08
Fuel sampling, analysis, polishing, and tank cleaning.
09
NFPA 110/99 emergency power testing for healthcare and critical facilities.
10
Containment inspection and leak detection for environmental compliance.
Why Energen
Cummins, Generac, Caterpillar, Kohler, MTU. One call handles them all.
When your backup power fails, we are already en route.
Every test documented and reported to code. No shortcuts.
Built in 1988 by techs who believe in doing the work right.
Electrical Generating Systems Association certified technicians.
Bay Area, Sacramento, Central Valley, and Central Coast. Full coverage across Northern and Central California.
Industries We Serve
Hospitals, clinics, and medical facilities requiring NFPA 99 and NFPA 110 compliance.
Mission-critical uptime for colocation, cloud, and enterprise data facilities.
Property management companies and building owners with standby power obligations.
City, county, and state facilities including water treatment and emergency services.
Hotels, resorts, and event venues requiring uninterrupted guest services.
Production facilities where power loss means product loss.
Our Story
Energen Systems was founded by technicians who believed generator service should be done right, not fast. For over three decades, we have maintained, repaired, and tested backup power systems across Northern California. We work on every brand because our clients should never have to call two companies.