Thinking about solar for your home in Green Valley? With Tucson Electric Power (TEP) as the local utility, the decision in 2026 hinges on understanding how to maximize the value of your solar production. The intense Arizona sun provides plenty of energy, but TEP's rules for crediting exported power make self-consumption the most important factor for savings. This is where pairing solar panels with a battery becomes a smart financial strategy.
From rates to ROI—continue in the savings calculator.
Open calculatorBenchmark Cost Analysis
What Do Solar Panels Cost in Green Valley in 2026?
The total cost depends on whether you include a battery. The figures below are estimates after applying Arizona's $1,000 state income tax credit.
- Solar-Only System (8.5 kW): The estimated net cost is $18,125. This system is a solid starting point for reducing your reliance on the grid.
- Solar + Battery System (8.5 kW solar with 10 kWh battery): The estimated net cost is $33,125. This configuration offers the highest annual savings and the most energy independence.
Beyond monthly savings, an owned solar system can be a useful long-term home-value feature, adding to its overall financial benefit.
Incentives & Tax Credits
State-Level Incentives Still Available in Arizona
While the 30% federal tax credit for residential solar installations concluded at the end of 2024, Arizona homeowners still have access to valuable state programs in 2026:
- $1,000 State Tax Credit: Arizona offers a one-time credit of 25% of the system cost, up to $1,000, to lower your state income tax bill.
- No Sales Tax: The full cost of your solar equipment and installation is exempt from state sales tax, providing immediate savings.
- No Property Tax Increase: Your home's assessed value won't increase for property tax purposes due to the added value of your solar panel system.
Net Metering: Tucson Electric Power Co
TEP Reduced Compensation
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How TEP's Export Compensation Shapes Solar Economics
Tucson Electric Power's current structure for new solar customers does not offer a 1-for-1 credit for exported energy. The rate you're paid for surplus power sent to the grid is modeled at just over 5 cents per kWh, while you pay TEP nearly 16 cents per kWh to buy it back. This gap makes a simple solar-only system less effective at eliminating your bill.
A solar-plus-battery system solves this problem. It prioritizes using your own generated power first, effectively allowing you to 'sell' your solar energy to yourself at the full retail rate. This self-consumption model is the most effective way to maximize your solar investment under TEP's rules.
Projected Savings
Projected Solar Savings with Tucson Electric Power
Your potential savings are directly tied to how much of your own solar energy you use. Exporting excess power to TEP returns a very low credit, so storing it for later use is key.
- A solar-only 8.5 kW system is estimated to save a Green Valley homeowner around $1,335 per year on their electricity bills.
- By adding a 10 kWh battery, the estimated annual savings jump significantly to $1,910. The battery allows you to store solar power generated during the day and use it during peak evening hours, drastically reducing the amount of expensive electricity you need to buy from TEP.
While the upfront cost is higher, the battery system provides superior long-term bill control and becomes more valuable if utility rates continue to rise.