For homeowners in Catalina Foothills, the intense Arizona sun is perfect for solar panels, but the financial picture has changed. As of 2026, the long-standing federal solar tax credit is no longer available for new residential systems. This shifts the focus to maximizing every kilowatt-hour you produce, especially with Tucson Electric Power (TEP) rules that value exported energy at a lower rate than the power you buy from the grid. Understanding the costs and benefits of adding a battery is now more important than ever.
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Solar & Battery System Costs in Catalina Foothills (2026)
Here are modeled cost estimates for a typical 8.5 kW solar energy system designed to offset an average local electricity bill of around $179 per month. Costs reflect pricing after the $1,000 Arizona state tax credit is applied.
- Solar-Only System (8.5 kW): The estimated net cost is around $18,125. This setup is projected to have a payback period of approximately 12.3 years.
- Solar + Battery System (8.5 kW panels & 10 kWh battery): The estimated net cost for this combined system is $33,125. While the upfront investment is higher, adding a battery increases your energy independence and annual savings.
These figures are modeled estimates. The calculator below can provide a more personalized quote based on your specific home and energy usage.
Incentives & Tax Credits
Arizona's 2026 Solar Incentives
Even without the federal tax credit, Arizona offers some of the best state-level support for homeowners going solar.
- State Income Tax Credit: Arizona provides a personal tax credit of 25% of the system's cost, capped at a lifetime maximum of $1,000. This directly reduces your state tax liability.
- Sales Tax Exemption: You will not pay state sales tax on the purchase of your solar equipment, which provides significant savings on the upfront cost.
- Property Tax Exemption: Installing solar panels increases your home's value, but thanks to a state exemption, your property taxes will not go up as a result. This ensures you get the full benefit of the investment, and an owned solar system can also support resale appeal when it's time to sell.
Net Metering: Tucson Electric Power Co
TEP Reduced Compensation
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Understanding Export Rates with Tucson Electric Power (TEP)
Catalina Foothills is in TEP territory, which operates under a net billing structure. This is different from older 1-for-1 net metering. In 2026, any excess solar power you send to the grid is credited at a discounted rate, modeled here at around $0.05 per kWh. That's much lower than the retail rate of about $0.16 per kWh you pay to buy electricity.
This rate difference is why a battery is recommended. Storing your excess solar power in a battery for later use is more than three times as valuable as exporting it to the grid. It allows you to self-consume your own clean energy when the sun isn't shining, dramatically reducing your reliance on TEP.
Projected Savings
How Solar Translates to Monthly and Annual Savings
With TEP, the most valuable solar energy is the power you use directly in your home. A battery helps you do more of that. By storing excess solar power generated during the day, you can use it during the evening instead of buying expensive electricity from the grid.
- A solar-only system is estimated to save $1,335 annually.
- Adding a 10 kWh battery increases those savings to $1,910 annually.
The battery system saves an extra $575 per year by preventing you from selling your valuable solar energy to the grid for a low credit. If grid electricity from TEP becomes more expensive over time, the value of producing and storing your own power will only increase.