For homeowners in Rio Rico, the question isn't just about capturing that intense southern Arizona sun—it's about how to actually save money with it under UniSource Energy's (UNS) current rules. Since UniSource moved to net billing, sending your excess solar power to the grid no longer earns you the full credit it once did. This guide explains why pairing solar panels with a battery is the most effective strategy in 2026.
Benchmark Cost Analysis
System Cost Breakdown for Rio Rico
While a basic solar-only system might look tempting at just $7,050 after tax credits, its savings are severely limited by UniSource's low export rates. That's why most homeowners now choose a combined solar and battery system to achieve true energy independence and maximize savings. Here's the realistic 2026 investment:
- Gross System Cost (Solar + Battery): Approximately $23,500
- Federal Tax Credit (30%): -$7,050
- Arizona State Tax Credit: -$1,000
- Net Cost After All Incentives: $15,450
This investment secures your energy against future rate hikes and lets you use 100% of the power you generate.
Incentives & Tax Credits
Arizona's Strong Solar Incentives
Rio Rico residents have access to excellent state and federal programs to reduce the cost of going solar:
- The 30% Federal Solar Tax Credit: This is the most significant incentive, allowing you to deduct 30% of your total system cost directly from your federal taxes. On a $23,500 system, that’s a $7,050 credit.
- Arizona State Tax Credit: The state offers a personal tax credit of 25% of the system cost, capped at $1,000. It's a direct reduction of your state tax liability.
- Tax Exemptions: Your solar system is exempt from both state sales tax and property tax increases, ensuring your investment doesn't raise your tax burden.
Net Metering: UniSource Energy (UNS)
Net Billing (2024)
Critical 🔋
Understanding UniSource Energy's Net Billing
The biggest challenge for solar in the UniSource territory is the switch from net metering to net billing. Here's what it means: the electricity you buy from UNS costs around 13.5¢ per kWh, but any excess solar power you export to the grid is only credited back to you at about 6-8¢ per kWh. This 50% loss in value makes exporting power a poor financial decision. A home battery solves this problem by allowing you to store your extra solar energy instead of selling it cheap, giving you full value for every kilowatt-hour your panels produce.
Projected Savings
Realistic Annual Savings with a Battery
With a solar and battery setup, you aren't reliant on selling cheap power back to UNS. Instead, you store excess solar energy generated during the day to power your home through the evening and overnight. This self-consumption strategy slashes what you pull from the grid, resulting in significant savings.
- Estimated Annual Savings (Solar + Battery): $912
- 25-Year Lifetime Savings: Over $22,800 (not including future UNS rate increases)
- System Payback Period: Around 17 years
The upfront cost is higher, but the long-term savings and energy security are far greater than a solar-only system which would only save about $646 per year.