The two numbers that matter
Electricity price: 15.4¢/kWh, below the national state average of 19.3¢. Every kilowatt-hour your panels make replaces one you'd buy at this price, so higher prices mean faster payback.
Sunshine: 6.5 peak sun hours a day, more than the state average of 5.0. Each kW of panels here makes roughly 1,862 kWh a year after real-world losses.
Estimates by bill size
| Monthly bill | Usage | System | Cost | Year-1 savings | Payback | 25-yr net |
|---|---|---|---|---|---|---|
| $100/month | 649 kWh | 3.8 kW | $11,300 | $920 | 11 yrs | $20,000 |
| $150/month | 974 kWh | 5.6 kW | $16,950 | $1,380 | 11 yrs | $29,990 |
| $250/month | 1623 kWh | 9.4 kW | $28,250 | $2,300 | 11 yrs | $49,990 |
Assumes $3.00/W installed, 90% usage offset, no federal tax credit, 3% yearly price rise and 0.5% yearly panel degradation. Sources: US Energy Information Administration (EIA), Electric Power Monthly, residential average price, July 2026; NREL PVWatts / NSRDB, average peak sun hours for each state's largest city.
Incentives in arizona.html
Arizona offers a 25% state tax credit, up to $1,000.
The US 30% Residential Clean Energy Credit ended for homeowner systems installed after December 31, 2025. Leased systems and PPAs may still be priced with a federal business credit. See solar incentives in 2026.
Plug-in and balcony solar in arizona.html
No dedicated plug-in solar law yet as of October 2026. Ask your utility before connecting anything to an outlet; most require an interconnection application. Over 30 states have considered bills, so check back.
Estimate a kit with the plug-in solar calculator.
Next steps
- Check your actual rate on your bill. Many utilities in arizona.html charge more or less than the state average.
- Run your own numbers in the savings calculator.
- Get at least three quotes and compare the price per watt. Use our quote checklist.
Questions about solar in arizona.html
Is solar worth it in arizona.html?
Good case. Solar usually makes financial sense here if your roof faces south, east or west with little shade.
How much does a solar system cost in arizona.html?
At about $3.00 per watt before incentives, a 5.6 kW system costs roughly $16,950. Local quotes vary with roof, equipment and installer.
How many panels would a arizona.html home need?
For a $150 monthly bill, about 5.6 kW, or roughly 2.3 panels per kW using 430 W panels. Use the system size calculator for your exact usage.