Tucson, AZ Solar Panels

The Arizona Residential Solar Energy Credit (A.R.S. §43-1083.01) allows homeowners in Tucson to claim 25% of the total installed cost of a qualifying solar energy system as a credit against their Arizona state income tax. The credit is capped at $1,000 per tax year, meaning most full-sized residential solar installations will earn the maximum $1,000 benefit. This credit applies to solar panels, inverters, racking hardware, labor, and permitting costs.

If your Arizona income tax liability in the year of installation is less than $1,000, you are not penalized — any unused portion of the credit can be carried forward for up to five additional tax years, giving you a full opportunity to capture the entire benefit. The credit is claimed by filing Arizona Form 310 along with your state income tax return for the year your system was interconnected and operational.

This credit is currently active with no scheduled expiration date. It applies to both primary and secondary residences. Your solar installer will provide the cost documentation needed to complete Form 310. For official guidance, visit the Arizona Department of Revenue at azdor.gov.

Arizona’s Solar Property Tax Exemption (A.R.S. §42-11054) ensures that the increased market value resulting from a residential solar installation is completely excluded from your home’s assessed value for property tax purposes. Solar systems typically add $15,000–$25,000 to a home’s market value, but under this exemption, none of that increase affects your annual property tax bill — saving homeowners in Tucson an estimated $100–$300 or more per year depending on their county’s tax rate.

The exemption is permanent for the life of the system, requires no annual renewal, and in most cases applies automatically once your system is permitted and interconnected. Eligible systems include photovoltaics (PV), solar water heating, solar thermal, passive solar, and several other renewable energy technologies. Some county assessors may request documentation of costs and equipment, so it is advisable to retain your installation contract and permit records.

This exemption is one of the most straightforward financial benefits of going solar in Tucson — it costs nothing to maintain and compounds in value over the full 25+ year life of your system. Contact the Pima County assessor’s office for county-specific procedures, or visit azcc.gov for additional state-level information.

Arizona waives its 5.6% state Transaction Privilege Tax (TPT) on the purchase and installation of residential solar energy systems. This exemption covers solar panels, inverters, battery storage (when installed as part of a solar system), racking hardware, and installation labor. On a typical $25,000 solar installation, this saves homeowners in Tucson approximately $1,400 in state sales tax upfront — with no application or paperwork required on the homeowner’s part.

The exemption is applied automatically at the point of sale by the solar installer or equipment seller, who is responsible for ensuring the correct tax treatment. Because Arizona’s combined state and local average sales tax rate is approximately 8.3%, the total savings — including local tax relief where applicable — can reach nearly $2,000 on a mid-sized system. Note that some cities and counties may still levy their own local sales taxes on portions of the transaction; confirm the full tax treatment with your installer.

This exemption applies to both solar-only and solar-plus-battery installations and is currently active with no expiration date. It is one of the simplest and most immediate financial benefits available to Arizona solar buyers. For official details, visit the Arizona Department of Revenue at azdor.gov.

Arizona no longer offers traditional net metering, where homeowners received full retail-rate credit for every kilowatt-hour of excess solar electricity sent to the grid. Under the current net billing framework established by the Arizona Corporation Commission, excess solar generation is credited at a lower export rate — sometimes called the Resource Comparison Proxy (RCP) rate — that is significantly below the retail electricity rate. The export rate you receive at the time your system interconnects is locked in for 10 years, providing some long-term predictability. In Tucson, the primary utility is TEP ~$0.057/kWh (vs. retail ~$0.15/kWh).

Because export rates are now 60–80% below retail value, solar systems sized to maximize self-consumption — using solar power directly in the home rather than exporting it — deliver the strongest financial returns. Pairing solar with battery storage is increasingly important in Arizona’s net billing environment, as batteries allow homeowners to store excess daytime solar production and use it during higher-cost evening hours instead of exporting it at low rates.

Homeowners in Tucson should carefully review their specific utility’s current rate schedule and solar plan options before installation. For official rate information and interconnection rules, visit the Arizona Corporation Commission at azcc.gov, or your utility’s website: tep.com.