DFW's summer grid strain and spring storms make a whole-home standby generator one of the highest-value upgrades a homeowner can make. We size, permit, and install correctly — including the automatic transfer switch and coordination with your gas provider.
Typical Cost Range
| Scope | Typical Range |
|---|---|
| Standard 20kW standby generator, installed | $8,000 – $12,000 |
| Larger unit or difficult gas line run | $12,000 – $15,000+ |
⚡ The Industry Truth
What some companies say: "Any generator size will work for your home."
What's actually true: An undersized generator will trip under load the first time your AC and water heater kick on together. We calculate your home's actual starting and running load before recommending a size.
What's Included
- Load calculation sized to your actual home, not a generic recommendation
- Automatic transfer switch installation
- Permit and inspection coordination with your city
- Coordination with your gas utility for the fuel line
FAQ
How much does a whole-home generator cost installed?
Most DFW installations, including the generator, transfer switch, and gas line work, run $8,000–$15,000 depending on generator size and site conditions.
Do I need a permit for a generator installation?
Yes, every DFW city we serve requires a permit and inspection for a permanently installed standby generator.
How long does installation take?
Most standby generator installs take 1-2 days, plus a scheduled city inspection.
Ready for an honest assessment? Contact Truth Electric for a generator quote that doesn't change.