Standby Generator Installation Cost in Texas (2026)
Short answer: Standby generator installation cost in Texas usually runs $6,000 to $18,000 installed [2]. National data puts a typical whole-house job at $6,000 to $11,000 [1], and Houston and DFW quotes for a 20 to 22 kW unit often land between $12,000 and $17,000 [3][4].
Texans have good reason to look at backup power. Winter Storm Uri left close to 4.5 million Texas homes and businesses without power at its peak in February 2021, and people who lost power were out for an average of 42 hours [5]. In July 2024, Hurricane Beryl knocked out power to more than 2.6 million Texas customers [6]. This guide breaks down what a permanent, automatic standby generator costs, line by line, using 2026 sources.
Standby generator cost breakdown
| Item | Typical cost |
|---|---|
| Total installed, typical whole house | $6,000–$11,000 national [1]; $6,000–$18,000 from a Texas installer guide [2] |
| Total installed, Houston area | $9,500–$16,000 for most homes [3] |
| Total installed, DFW (20 kW) | $13,500–$17,000 all in [4] |
| Generator unit only | $3,000–$6,000 [1]; $3,000–$12,000 by size and brand [2] |
| Installation labor | $3,000–$5,000 [1]; $1,500–$5,000 [2] |
| Automatic transfer switch | $600–$2,500 installed [1]; $400–$1,200 [2]; $500–$1,800 [3] |
| Gas line and hookup | $12–$25 per foot [1]; $500–$2,000 [2]; $500–$2,500 [3] |
| Concrete pad | $150–$400 pre-cast [1]; $200–$800 [2] |
| Permits and inspections | $80–$450 [1]; $100–$600 [2]; $400–$1,400 in most Houston-area jurisdictions [3] |
The sources disagree most on the total. The national guide's $6,000–$11,000 [1] sits below what Texas installers publish, where a whole-house system that runs central AC is often $12,000 or more [2][3][4]. Texas homes lean on big AC loads in summer, so they tend to need larger units, and that pushes the price up.
Cost by generator size
| Size | What it usually runs | Installed cost |
|---|---|---|
| 7–16 kW | Essentials, maybe one AC unit | $6,000–$11,000 [2]; $7,000–$10,000 for 10–14 kW in Houston [3] |
| 17–24 kW | Most of a mid-size home with central air | $10,000–$14,000 for 17–22 kW [2]; $9,500–$14,500 for 18–24 kW in Houston [3]; $13,500–$17,000 for 20 kW in DFW [4] |
| 23–36 kW | Large homes, two AC systems, pool | $13,000–$18,000+ [2]; $14,000–$20,000 for 26–36 kW in Houston [3] |
What moves the price
- Size (kW). This is the biggest driver. A unit sized for the whole house with central AC costs far more than one that runs a fridge and a few circuits [2].
- Gas supply. A 22 kW unit needs a lot of gas. If your meter can't supply it, the utility may have to upsize it, and long gas runs add cost [3]. Homes without natural gas need a propane tank, about $400–$1,800 [1].
- Distance. The farther the unit sits from the panel and gas meter, the more wire and pipe you pay for [1][2].
- Panel upgrades. Some older panels can't take the transfer switch and load, which adds a separate job [2]. See our electrical panel upgrade cost guide.
- Flood-prone lots. Near the coast the unit may need to sit higher, which costs more for the pad [3].
Running cost
A 20 kW unit costs about $30–$40 a day to run on natural gas, versus about $150–$170 a day on propane [1]. Standby generators last 15 to 30 years [1]. They also run a short self-test each week, which uses very little fuel [3].
Steps before you buy
- Decide what must stay on in an outage: AC, fridge, well pump, medical gear.
- Ask for a load calculation, not a guess, to pick the size [3].
- Check your gas meter and line size, or plan for propane [1][3].
- Get two or three written bids that each list the unit, transfer switch, gas work, pad and permits. A low bid often leaves one of these out [3].
- Confirm who pulls the electrical and gas permits [3]. Learn how to check a Texas contractor's license.
- If your gas line needs work, compare with our Texas gas line cost guide.
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FAQ
How much does a standby generator cost installed in Texas?
Most Texas homes pay about $6,000 to $18,000 installed, depending on size, fuel and how far the unit sits from the panel and gas meter [2]. A typical 20 to 22 kW whole-house setup in Houston or DFW is often $12,000 to $17,000 [3][4].
What size generator does a Texas home need?
A 17 to 24 kW unit runs most mid-size homes with one central AC system; homes with two AC systems or a pool often need 26 kW or more [2][3]. A load calculation from the installer is the best way to size it.
Is natural gas or propane cheaper to run?
Natural gas is much cheaper. A 20 kW unit costs about $30 to $40 a day on natural gas versus about $150 to $170 a day on propane [1].
Do I need a permit for a standby generator in Texas?
Usually yes. Houston-area installs typically need an electrical permit and, depending on the city, a gas or plumbing permit [3]. Permits run about $80 to $450 in national data [1] and $400 to $1,400 in most Houston-area jurisdictions [3].
Sources
- HomeGuide, How Much Does a Whole House Generator Cost? (2026; Dec 30, 2025)
- Texas Rain Solutions, Average Installation Cost for Standby Generator (2026 Price Guide)
- Texas Star Power, Whole-House Generator Cost in Houston (2026 estimates)
- Clements Electric, Whole-House Generator Cost in Texas: 2026 Installed Prices (updated Oct 9, 2026)
- University of Houston, New Report Details Impact of Winter Storm Uri on Texans (Mar 29, 2021)
- The Texas Tribune, CenterPoint and Hurricane Beryl power outages (updated Nov 22, 2024)
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