Generator installation cost in Arizona
In Arizona, a whole house generator of 22 kW running on natural gas comes to about $10,769 to $15,269 once installed. Local electricians make $30.88 an hour here, which is 10% under the US average of $34.37. That pay rate sets the electrician line, between $2,700 and $4,900.
Is 22 kW the right size for you? Size your house in three questions.
Installed price in Arizona, by size
Half load fuel and Arizona prices. Generac posts a fuel table for every model. Models of 18 kW, 24 kW and 26 kW are rated to use no more fuel each hour than the size below, so hourly fuel use doesn't rise in step with kW.
| Size | Natural gas, installed | Gas at half load | Propane, installed | Propane at half load | Fuel figures |
|---|---|---|---|---|---|
| 10 kW | $8,019 to $12,519 | $2.38/h | $8,319 to $12,919 | $2.65/h | Generac Guardian 10 kW |
| 14 kW | $9,349 to $13,849 | $4.59/h | $9,649 to $14,249 | $4.94/h | Generac Guardian 14 kW |
| 18 kW | $10,169 to $14,669 | $3.98/h | $10,469 to $15,069 | $4.64/h | Generac Guardian 18 kW |
| 22 kW | $10,769 to $15,269 | $4.81/h | $11,069 to $15,669 | $6.91/h | Generac Guardian 22 kW |
| 24 kW | $11,189 to $15,689 | $4.78/h | $11,489 to $16,089 | $6.91/h | Generac Guardian 24 kW |
| 26 kW | $11,619 to $16,119 | $4.43/h | $11,919 to $16,519 | $5.62/h | Generac Guardian 26 kW |
What makes up the 22 kW price in Arizona
At 35th of 51 in pay, labor at $30.88 an hour costs up to $600 less than at the US average.
| Line, 22 kW | Natural gas | Propane | Basis |
|---|---|---|---|
| Generator | $6,309 | $6,309 | 22 kW bundle at Generac list price, minus the switch |
| Transfer switch | $1,060 | $1,060 | difference between Generac's listed prices with and without the switch |
| Electrician: switch, wiring, start-up | $2,700 to $4,900 | $2,700 to $4,900 | published install ranges, based on $30.88 an hour, the Arizona rate (BLS) |
| Fuel line | $400 to $1,800 | $700 to $2,200 | from the meter for gas; from the tank for propane |
| Pad and permit | $300 to $1,200 | $300 to $1,200 | composite pad or slab, local fees |
| Installed | $10,769 to $15,269 | $11,069 to $15,669 | propane leaves out the tank |
What fuel costs in Arizona
| Fuel | Price | 22 kW an hour | Three days |
|---|---|---|---|
| Natural gas | $23.56 per 1,000 ft³ | $4.81 | $346 |
| Propane | $2.73 a gallon | $6.91 | $497 (182 gal) |
Gas runs cheaper in Arizona. A 22 kW unit at half load runs $4.81 an hour, versus $6.91 for propane. Residential gas ranks 34th cheapest among 51 here. Propane uses the EIA U.S. average, which is the regional figure for Arizona.
| Propane tank | Usable at 80% | 22 kW at half load | Fill at the U.S. average price |
|---|---|---|---|
| 250 gal | 200 gal | 79 h | $546 |
| 500 gal | 400 gal | 158 h | $1,092 |
Power outages in Arizona
In 2025, Arizona customers lost power for 69 minutes on average. That was below the US figure of 269 and ranked 50th highest of 51. Major storms accounted for 11% of that outage time, while the average on ordinary days was 61 minutes. Of the last ten years, 2022 was the worst, at 137 minutes. The ten-year average sits at 94, and 2025 fell 25 minutes short of it.
Each year since 2016
| Year | Minutes out, all events | Rank of 51 states | Without major storms |
|---|---|---|---|
| 2025 | 69 | 50th | 61 |
| 2024 | 84 | 50th | 70 |
| 2023 | 104 | 46th | 67 |
| 2022 | 137 | 42nd | 69 |
| 2021 | 102 | 45th | 69 |
| 2020 | 71 | 50th | 62 |
| 2019 | 83 | 49th | 64 |
| 2018 | 112 | 46th | 58 |
| 2017 | 90 | 49th | 51 |
| 2016 | 87 | 50th | 68 |
Arizona utilities and their outages in 2025
| Utility | Customers | Minutes out | Outages each | Minutes per outage |
|---|---|---|---|---|
| Arizona Public Service Co | 1,426,947 | 73 | 0.84 | 87 |
| Salt River Project | 1,182,229 | 66 | 1.02 | 64 |
| Tucson Electric Power Co | 460,504 | 42 | 0.65 | 64 |
| UNS Electric, Inc | 108,034 | 81 | 0.94 | 86 |
| Trico Electric Cooperative Inc | 56,123 | 90 | 0.73 | 123 |
In 2025, Trico Electric Cooperative Inc customers spent 90 minutes without power, while Tucson Electric Power Co customers spent 42. That 2.2 to one gap makes your own utility more important than the 69 minute figure for the whole state. The customer-weighted average across all utilities was 0.92 power losses per customer per year, fewer than the 1.35 for the US. Outages on Arizona Public Service Co lines averaged 87 minutes, or about 1.5 hours. For a 22 kW generator at half load, that's $6.97 of gas.
Major FEMA disasters in Arizona since 2016
In all, 10 major disasters were declared: 1 wildfire, 4 floods and 5 severe storms. The latest came in May 2026, and COVID-19 is not counted. 1 of those was a wildfire. In fire country, utilities also shut off lines on purpose when the wind is high, and those shutoffs are never recorded as declarations. With 4 flood declarations, put the generator pad higher than the local flood level, which your permit office can give you for the lot.
| Declared | Disaster | FEMA number |
|---|---|---|
| May 2026 | Severe Storms and Flooding | DR-4911 |
| October 2024 | Flooding | DR-4840 |
| October 2024 | Watch Fire | DR-4833 |
| April 2023 | Severe Winter Storms and Flooding | DR-4703 |
| December 2022 | Flooding | DR-4681 |
| September 2022 | Severe Storms | DR-4668 |
Arizona and its bordering states
| State | 22 kW on gas, installed | Wage | Minutes out |
|---|---|---|---|
| Arizona | $10,769 to $15,269 | $30.88 | 69 |
| California | $11,869 to $17,569 | $41.28 | 358 |
| Colorado | $10,969 to $15,569 | $31.88 | 273 |
| New Mexico | $10,569 to $14,869 | $28.66 | 162 |
| Nevada | $11,369 to $16,469 | $36.4 | 128 |
| Utah | $10,869 to $15,369 | $31.39 | 117 |
1 out of the 5 neighbors installs for less. New Mexico has the lowest cost at $10,569, while California has the highest at $11,869. Outage times vary more than prices. California recorded 358 minutes in 2025, compared with 69 minutes here.
Behind the numbers: BLS wages (May 2025), EIA gas data (March to August 2026), EIA propane data (October 26, 2026), EIA outage figures, EIA-861, FEMA. All states.