Hanley Electric (formerly Calvary Electric)
Hanley Electric, a family-owned electrical contractor, installs standby generators, transfer switches and panel upgrades for home backup power in Flint, Flushing and Swartz Creek.
What they do
Standby generators are the core of the work. The company installs standby generators and transfer switches, handles generator installs on an existing unit, and upgrades service panels so a home can carry its load. Each installation starts with an assessment of power requirements, followed by the wiring, the transfer switch and testing for efficiency. Ongoing generator maintenance is also offered. Free estimates are available online and by phone. Founded in 2007, the firm is family-owned and works in Flint, Flushing and Swartz Creek. Its office is open on weekdays, with weekends closed.
- Standby generators
- Generator installs
- Transfer switches
Listed under Backup power
Where they work
What we checked
Checked 12 Nov 2026, from public sources.
Not yet verified. We haven’t contacted this business yet. Ask for a written quote before work starts.
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