Generator Installation Cost Calculator
Use our generator installation cost calculator to roughly estimate the price of installing a standby generator at your home. Installation costs can vary depending on generator size, electrical upgrades, fuel source, and installation complexity.
This calculator provides a quick estimate to help homeowners understand potential installation costs before requesting a detailed quote.
Generator Installation Cost Estimator
Adjust the options below — your estimate updates instantly.
How would you like to choose your generator size?
Generator Size
Standby generators are sized in kilowatts (kW) — the higher the kW, the more of your home it can power during an outage. A smaller generator covers essentials like lights, fridge, and outlets. A larger one handles your full home including AC. Most Texas homeowners go with an 18–22 kW unit for whole-home coverage.
Home Square Footage
2,500 sq ft
First AC Unit Size (tons)
Check the label on your outdoor AC unit — look for the model number. A number like 048 means 4 tons (divide BTUs by 12,000). Most Texas homes use 3–5 ton units.
4 tons
Second AC Unit?
Many Texas homes have two AC units — one per floor or zone. Adding a second unit significantly increases the generator size needed. Many homeowners use load management to run both units alternately, which can reduce the required generator size.
3 tons
Recommended Size
Distance from electrical panel to generator
50 ft
The main electrical panel is typically located on the outside of the house next to the meter. Generators are usually placed close to the gas meter to minimize the gas run. The further apart they are, the more wire and materials are needed, which increases the cost.
Distance from gas meter to generator
30 ft
A new gas line must be run from your existing gas meter to the generator. Longer runs require more pipe, fittings, and labour. Most installs are under 50 ft.
Your Estimate
Estimated Total
$—
This is a rough estimate. Final price may vary due to on site specifics, gas line routing, and whether additional electrical work is needed. For an accurate quote, please fill out the form below.
Estimated Running Cost During an Outage
Texas average ~$1.00–$1.40/therm. Updates automatically.
Home Value Impact
Estimated Value Added
Based on 3–5% typical home value increase from a standby generator installation.
