Solar States

Arizona · homeowner planning guide

Solar panels in Arizona: costs, incentives & payback

Arizona solar economics depend on your electricity provider. APS and TEP publish separate export riders and application rules; the state solar-device tax credit is a different benefit. SRP export terms still need checking.

Sun resourceHigh sun resource
Sun (2024)5.53 kWh/m²/day
Federal credit30% (2022–25 installs only)
State incentiveCheck eligibility
Export rulesCheck utility tariff

Guide updated: 2026-09-21. Local source-check scope and unresolved items are listed below.

Plan with your own numbers

Solar tools for Arizona homeowners

Start with the solar calculator using your bill, fixed charges, self-consumption and export-price assumptions. The utility rules below are not automatically applied in the calculator. Utility production charges may need a separate adjustment; this is a planning scenario, not a utility tariff simulation or guaranteed savings.

Estimate solar size and cost in ArizonaCalculate panels for a Arizona homeEstimate Arizona solar paybackCheck solar production context for ArizonaEstimate solar panels for EV charging in Arizona

Local export rules and incentives

Editorial review: 2026-09-21. APS RCP Revision 11 and TEP Rider 14 plus the linked TEP Statement of Charges reviewed. A pending TEP price is not treated as approved. The Arizona tax statute retains its original source-check date. SRP tariffs, current tax filing instructions and live battery-pilot capacity remain unverified.

Export credit

Source-checked within the stated scope

For eligible APS residential customers on Rate Rider RCP, exported electricity is metered separately and credited monthly, not automatically offset at the retail import price. Revision 11 lists $0.05554 per kWh for the September 1, 2026 through August 31, 2027 application tranche. Confirm your assigned tranche: earlier applicants can have a different rate. Credits above the monthly bill roll forward. After the December bill, a check is issued if remaining export credits exceed $25; otherwise they carry into the next year. This uses the tariff wording, which is more specific than the simplified website FAQ. Illustrative arithmetic only: 400 exported kWh at $0.05554 gives about $22.22 of credit, before the rest of the bill. All retail-plan charges continue to apply. APS also describes an EPR-2 option with seasonal/on-peak/off-peak purchase rates, but those amounts are not verified here. TEP Rider 14 also uses monthly export credits and carries excess balances forward. Its annual payout is tied to bills produced in October (September usage), when the remaining RCP credit balance exceeds $10. The linked Statement of Charges lists $0.0513/kWh effective October 1, 2025 and $0.0462/kWh marked Pending with no decision number. The pending figure is not an approved current rate in this review; ask TEP to confirm your application-date rate and any later approval. SRP export terms remain unverified (2026-09-21: srpnet.com Access Denied). Neither utility figure is an Arizona-wide rate.

Supporting sources: APS Rate Rider RCP, Revision 11, effective September 1, 2026 (PDF); APS: Your Journey to Adding Rooftop Solar; TEP Rider 14: RCP-PRS, effective September 1, 2023 (PDF); TEP Statement of Charges, R-14 price rows including a Pending row (PDF).

Utility coverage

Source-checked within the stated scope

The RCP tariff applies to qualifying on-site solar serving an APS residential account under an applicable residential rate. It cannot be combined with a grandfathered Legacy rate schedule or rider. APS identifies Legacy EPR-6 as closed to new customers; do not confuse it with a new RCP application. The RCP generator must use photovoltaic panels, connect to the APS distribution grid and sit behind the billing meter serving the home. Those APS terms do not apply to TEP or SRP. TEP Rider 14 separately covers qualifying residential and small-general-service on-site solar or wind within the TEP service area; it requires an applicable time-of-use plan and cannot be combined with grandfathered net-metering Rider 4. TEP eligibility includes a capacity limit of 125% of connected load, or less than the service-drop capacity when load data are unavailable. That is not 125% of annual electricity use. Have the provider confirm your retail plan, export rider and legacy status in writing.

Supporting sources: APS Rate Rider RCP, Revision 11, effective September 1, 2026 (PDF); APS: Renewable Energy Riders; TEP Rider 14: RCP-PRS, effective September 1, 2023 (PDF).

Incentive eligibility

Source-checked within the stated scope

Arizona Revised Statutes 43-1083 allows a state income-tax credit of 25% of the cost of a qualifying solar energy device installed during the tax year in an Arizona residence by a resident who is not another taxpayer's dependent. The annual cap is $1,000 and the cumulative credit for the same residence cannot exceed $1,000 across tax years. Unused credit may carry forward for five consecutive taxable years; this is not an automatic cash refund. Separately, a 2026 APS presentation describes Storage Rewards as a 2025-2030 battery pilot for up to 5,000 participants, with annual payments of $110/kW based on average delivered performance. That is not $110 per installed kWh and not a guaranteed installation rebate. It requires an eligible battery and APS permission to operate; lease terms and prior battery-pilot participation can matter. The presentation does not verify remaining places, current enrollment approval or funding for your application.

Supporting sources: Arizona Revised Statutes, section 43-1083: Credit for solar energy devices; APS 2026 installer forum: Storage Rewards pilot (PDF).

Application and limits

Source-checked within the stated scope

APS RCP normally retains the initial purchase rate for 10 years from interconnection; afterward the applicable annual rate can change. To retain the application-time rate before a September 1 tranche change, the tariff specifies installation and local-authority approval within 180 days of application, or 270 days for qualifying third-party/APS delays not caused by the customer or installer. Expansion, moving the system and leaving a Legacy tariff have special consequences; the material-increase clause refers to 10% or 1 kW AC, whichever is greater. Obtain a written determination before changing a system. All sizes remain subject to APS interconnection requirements; this review does not establish a universal residential capacity ceiling. APS guidance shows approval before installation, local inspection, metering and permission to operate. For the tax credit, section 43-1083 requires a provider cost statement and compliant equipment/installation; separate-filing spouses each get half the joint-return credit. Current tax-year forms and live battery-pilot enrollment availability remain unverified. TEP sets new RCP tranches on October 1, rather than APS's September 1. TEP Rider 14 ties the initial rate to the application and completion under its interconnection agreement, with an initial 10-year period and special expansion/transfer rules. TEP requires PowerClerk application approval before construction and permission to operate before energizing the system; do not substitute the APS completion deadlines for TEP's agreement.

Supporting sources: APS Rate Rider RCP, Revision 11, effective September 1, 2026 (PDF); APS: Your Journey to Adding Rooftop Solar; Arizona Revised Statutes, section 43-1083: Credit for solar energy devices; TEP Rider 14: RCP-PRS, effective September 1, 2023 (PDF); TEP: Residential Interconnection Application Process.

Official sources and review status

A source review is not an approval of your application, a confirmed rebate reservation or a verification of all utility tariffs. Dates shown apply only to the cited documents, not every claim about the state.

Before you sign

  1. Check the provider on your bill. Obtain the APS or TEP rider, application tranche and completion conditions; do not use the pending TEP price as an approved rate.
  2. Compare export credits with remaining retail, fixed and demand charges. Do not assume $22.22 of export credit makes a $22.22 bill disappear.
  3. Ask APS about eligible equipment, remaining Storage Rewards places and performance obligations before counting a pilot payment.
  4. Keep the installer cost statement; confirm state-tax liability, previous credits for this home and current filing instructions separately from federal eligibility.

Before comparing solar quotes in Arizona

For your Arizona quote, which APS, SRP, TEP or other provider rate plan is used, and what happens to the estimate under its export terms?

  1. Compare cash cost first. Divide the quoted solar cash price by system size in watts. Keep batteries, roof work and financing fees separate. Compare quotes by cost per watt.
  2. Separate incentives from bill savings. Require written eligibility and approval for each state or utility benefit. A pending application is not a guaranteed payment.
  3. Test the payback assumptions. Use your actual electricity bill and applicable export terms. Estimate your solar break-even year without unconfirmed incentives.

Federal credit: distinguish a past installation from a new one

The IRS states that the residential clean energy credit is not available for property placed in service after December 31, 2025. Paying before that date does not make a later completed installation eligible. A qualifying unused credit from an earlier installation is a separate tax question. Read the IRS credit guidance and installation-deadline FAQ (question 7).

Federal guidance checked 2026-09-11. This is general planning information, not individualized tax advice.

Source checks for Arizona homeowners

EIA Arizona energy profile provides state energy context, not a residential installation quote. Confirm current incentives with the administering agency and export terms with the utility named on your bill. These research links are not a confirmation that every local program described in the guide is currently open.

Questions homeowners ask

How is excess solar electricity credited?
For eligible APS residential customers on Rate Rider RCP, exported electricity is metered separately and credited monthly, not automatically offset at the retail import price. Revision 11 lists $0.05554 per kWh for the September 1, 2026 through August 31, 2027 application tranche. Confirm your assigned tranche: earlier applicants can have a different rate. Credits above the monthly bill roll forward. After the December bill, a check is issued if remaining export credits exceed $25; otherwise they carry into the next year. This uses the tariff wording, which is more specific than the simplified website FAQ. Illustrative arithmetic only: 400 exported kWh at $0.05554 gives about $22.22 of credit, before the rest of the bill. All retail-plan charges continue to apply. APS also describes an EPR-2 option with seasonal/on-peak/off-peak purchase rates, but those amounts are not verified here. TEP Rider 14 also uses monthly export credits and carries excess balances forward. Its annual payout is tied to bills produced in October (September usage), when the remaining RCP credit balance exceeds $10. The linked Statement of Charges lists $0.0513/kWh effective October 1, 2025 and $0.0462/kWh marked Pending with no decision number. The pending figure is not an approved current rate in this review; ask TEP to confirm your application-date rate and any later approval. SRP export terms remain unverified (2026-09-21: srpnet.com Access Denied). Neither utility figure is an Arizona-wide rate.
Do the same solar rules apply to every utility?
The RCP tariff applies to qualifying on-site solar serving an APS residential account under an applicable residential rate. It cannot be combined with a grandfathered Legacy rate schedule or rider. APS identifies Legacy EPR-6 as closed to new customers; do not confuse it with a new RCP application. The RCP generator must use photovoltaic panels, connect to the APS distribution grid and sit behind the billing meter serving the home. Those APS terms do not apply to TEP or SRP. TEP Rider 14 separately covers qualifying residential and small-general-service on-site solar or wind within the TEP service area; it requires an applicable time-of-use plan and cannot be combined with grandfathered net-metering Rider 4. TEP eligibility includes a capacity limit of 125% of connected load, or less than the service-drop capacity when load data are unavailable. That is not 125% of annual electricity use. Have the provider confirm your retail plan, export rider and legacy status in writing.
Which residential solar incentives are confirmed?
Arizona Revised Statutes 43-1083 allows a state income-tax credit of 25% of the cost of a qualifying solar energy device installed during the tax year in an Arizona residence by a resident who is not another taxpayer's dependent. The annual cap is $1,000 and the cumulative credit for the same residence cannot exceed $1,000 across tax years. Unused credit may carry forward for five consecutive taxable years; this is not an automatic cash refund. Separately, a 2026 APS presentation describes Storage Rewards as a 2025-2030 battery pilot for up to 5,000 participants, with annual payments of $110/kW based on average delivered performance. That is not $110 per installed kWh and not a guaranteed installation rebate. It requires an eligible battery and APS permission to operate; lease terms and prior battery-pilot participation can matter. The presentation does not verify remaining places, current enrollment approval or funding for your application.
What application, capacity and funding limits should I check?
APS RCP normally retains the initial purchase rate for 10 years from interconnection; afterward the applicable annual rate can change. To retain the application-time rate before a September 1 tranche change, the tariff specifies installation and local-authority approval within 180 days of application, or 270 days for qualifying third-party/APS delays not caused by the customer or installer. Expansion, moving the system and leaving a Legacy tariff have special consequences; the material-increase clause refers to 10% or 1 kW AC, whichever is greater. Obtain a written determination before changing a system. All sizes remain subject to APS interconnection requirements; this review does not establish a universal residential capacity ceiling. APS guidance shows approval before installation, local inspection, metering and permission to operate. For the tax credit, section 43-1083 requires a provider cost statement and compliant equipment/installation; separate-filing spouses each get half the joint-return credit. Current tax-year forms and live battery-pilot enrollment availability remain unverified. TEP sets new RCP tranches on October 1, rather than APS's September 1. TEP Rider 14 ties the initial rate to the application and completion under its interconnection agreement, with an initial 10-year period and special expansion/transfer rules. TEP requires PowerClerk application approval before construction and permission to operate before energizing the system; do not substitute the APS completion deadlines for TEP's agreement.
Is solar worth it in Arizona?
It depends on sun resource, your utility's net metering or net-billing rules, and what you pay for electricity. The federal 30% clean-energy credit applied to systems in service by December 31, 2025; per the IRS it is not available for property placed in service after that date. Arizona-specific programs are being verified and will appear here as confirmed.
How much does the federal solar credit cover?
The federal Residential Clean Energy Credit covered 30% of qualified costs for systems in service from 2022 through December 31, 2025. Per the IRS, the credit is not available for property placed in service after that date. Arizona-specific programs are being verified and will appear here as confirmed.
Do I need a battery with solar in Arizona?
Not always — where utilities pay full-retail net metering, a battery's value is lower. Where net billing cuts export credits, batteries let you shift your own energy into the evening. Your Arizona utility tariff determines the math.
Can I install solar panels myself in Arizona?
DIY installs happen, but most utilities require a licensed electrician, permits and an inspection before interconnection. Check Arizona's permit office and your utility's interconnection rules first.

How to buy solar in Arizona — the honest version

  1. Model the math first. Get 2–3 quotes in $/W (dollars per watt, before credit) and compare on that number — not on "savings" projections. Use the quote scorecard.
  2. Check your utility's export rules. Retail net metering vs net billing changes whether you want a battery — see the notes above and the battery planner.
  3. Ask about the hidden three: permits, HOA rules and roof condition — walk the 16-question checklist before you sign.
  4. Confirm local sun. Measured 2024 irradiance for Arizona is on the sun look-up; national literacy starts at the federal credit guide.