Who installs generators and automatic transfer switches?
Generator and automatic transfer switch projects usually require a licensed electrician or backup-power specialist. The provider should be able to size the system, install the transfer switch, coordinate permits, and connect the generator safely to the electrical panel.
What generator and ATS installation may include
A full standby generator installation typically covers: standby generator selection and sizing based on load calculations; automatic transfer switch (ATS) installation and wiring between utility feed, generator, and panel; panel coordination — identifying and routing critical loads to the protected circuits; load calculation to ensure the generator is correctly sized for connected equipment; permit filing and inspection scheduling with the local jurisdiction; utility notification and coordination where required by the interconnection agreement; testing and commissioning under simulated outage conditions; and documentation of the completed system for future service.
When backup power overlaps with batteries or panels
Generator projects frequently intersect with other electrical work. Homes and facilities with undersized panels may need a panel upgrade to safely connect a standby generator. Some backup-power designs use a hybrid approach combining a generator for extended outages with battery storage for immediate failover — these integrated systems require a contractor who understands both technologies and can coordinate the load management between them. If you're also considering solar, the interconnection of solar, battery, and generator requires careful design to avoid backfeed and safety hazards.
What to look for in a generator contractor
Prioritize licensed electricians who specifically list generator and ATS installation as a service. Generator manufacturer certifications (Generac, Kohler, Cummins) indicate factory training in that brand's equipment. Ask candidates about their local utility coordination experience — the process varies by utility and jurisdiction and an experienced contractor will know the process in your area. Verify that permit filing and inspection are included in the project scope.
Published · ElectriScout Editorial