Powering your home through a blistering Sahuarita summer can send your Tucson Electric Power (TEP) bill soaring. With some of the best solar potential in the nation right here in the Sonoran Desert, solar panels are a natural fit. But because of TEP's net billing policy, a battery is crucial to actually seeing major savings. This guide breaks down the real costs and returns for a complete solar and battery system in 2026.
Benchmark Cost Analysis
2026 Solar & Battery Costs in Sahuarita
To effectively combat TEP's time-of-use rates and low export credits, a combined solar-plus-storage system is the standard recommendation. While a solar-only installation may seem cheaper upfront (around $7,050 after incentives), the limited savings make it a poor long-term investment. The realistic cost for a system that gives you energy control is:
- Typical Gross Cost (Solar + Battery): $23,500
- Net Cost After Federal & AZ Credits: $15,450
This net cost is your final out-of-pocket expense after claiming all available incentives. It represents a one-time investment to drastically reduce or eliminate a monthly bill that only ever goes up.
Incentives & Tax Credits
Available Tax Credits & Exemptions
Sahuarita homeowners can leverage powerful financial incentives to make the switch to solar affordable. The cost of $15,450 is only possible because of these key programs:
- Federal Solar Tax Credit: This is a dollar-for-dollar credit against your federal income taxes, worth 30% of your total system cost. For a $23,500 system, this saves you $7,050.
- Arizona Residential Solar Energy Tax Credit: A state-level credit that further reduces your tax liability by $1,000.
- Sales & Property Tax Exemptions: You pay zero sales tax on your solar equipment in Arizona, and installing panels will not increase your property taxes, thanks to a statewide exemption.
Net Metering: Tucson Electric Power (TEP)
Net Billing (2024)
Critical 🔋
Why a Battery is Essential with Tucson Electric Power (TEP)
TEP operates under a "Net Billing" program, which is less favorable than the old net metering. Under this system, the power you buy from TEP costs significantly more (around 13.5¢/kWh) than the credit they give you for excess solar power you export (around 6-8¢/kWh). Without a battery, you're forced to sell your valuable solar energy to TEP for pennies and buy it back for dollars just a few hours later. A battery lets you keep that energy for yourself, using it when it's most valuable and avoiding this financial loss.
Projected Savings
Projected Savings Against TEP Rates
Installing a solar and battery system allows you to generate and store your own power, using it during TEP's expensive peak hours in the late afternoon and evening. This self-reliance provides consistent savings year after year.
- Estimated Annual Savings (with battery): $910
- 25-Year Lifetime Savings: Over $22,750
- Break-Even Point (Payback): Approximately 17 years
By generating around 7,131 kWh per year with a standard 4kW system, you take control of your energy costs rather than being subject to TEP's unpredictable rate structure.