Arizona Solar Guide 2026: Rates, Incentives & Top Providers

Arizona has the best solar resource in the country. It also has one of the most confusing billing environments for solar owners.

Both are true. Arizona averages 6.54 peak sun hours per day, the highest of all 51 states and DC and about 31% above the national average of 4.98^[1]. Yet there is no statewide net metering law — your export compensation depends entirely on which utility serves your roof^[2].

Then came the federal change: the 30% residential credit under Section 25D expired for expenditures made after December 31, 2025^[3], landing on top of an already-fragmented utility landscape.

So does solar still work here? Yes. But the answer hinges on your utility, your rate plan, and whether you add a battery.

Why Arizona is the best solar resource in the country

Sources: NREL PVWatts v8 / NSRDB modeled for Phoenix, fixed roof mount, 20° tilt, 180° azimuth, 14% losses^[1]; SEIA state data compiled through June 2026 via BGR^[4].

The number that matters most is December, not the average. Arizona's worst month still delivers 4.75 peak sun hours a day — better than the annual average of most of the country, which flattens the seasonal swing that plagues northern markets.

That does not mean equally good economics everywhere. Our California guide covers a weaker resource (6.08 PSH) but 34.74¢/kWh retail rates. Our Texas guide covers 15.94¢/kWh rates and a far simpler utility picture. Arizona sits in an unusual middle: superb sun, moderate rates, fragmented rules.

Arizona electricity rates: the counterintuitive part

This surprises most people: Arizona's residential electricity is cheaper than the national average. Per the EIA's Electric Power Monthly (Table 5.6.A, June 2026 data), Arizona's average residential rate was 15.18¢/kWh against a US average of 18.34¢/kWh^[5].

Source: EIA Electric Power Monthly, Table 5.6.A, June 2026 and 2025, cents per kilowatthour, released August 26, 2026^[5]. Values are preliminary estimates from the EIA-861M sample.

Arizona was one of the few states where the residential rate actually fell year over year. Don't build a 25-year model on that, but it confirms the key point: in Arizona, you are not chasing an out-of-control retail rate. California solar pays because avoided kilowatt-hours are enormously valuable; Arizona solar pays because panels here produce more energy per watt than almost anywhere else, and because the summer peak/off-peak spread is wide.

The utility patchwork: no statewide net metering mandate

Arizona has no statewide net metering statute. The Arizona Corporation Commission (ACC) sets export compensation for the investor-owned utilities under its jurisdiction — APS, Tucson Electric Power, and UniSource. Its authority does not extend to Salt River Project, to electric cooperatives, or to municipal utilities^[2].

The pivot came in 2017, when the ACC adopted the Resource Comparison Proxy (RCP) in Docket E-01345A-16-0036, moving APS to a below-retail export credit based on avoided cost^[2]. Pre-2017 APS customers were grandfathered for up to 20 years. Everyone since is on net billing.

Utility jurisdiction and regulatory authority per Arizona Solar Authority's net metering reference, citing ACC Docket E-01345A-16-0036^[2]. Always confirm your own utility and tariff before modeling savings.

The practical takeaway: two neighbors a mile apart can face completely different economics if they sit on opposite sides of an APS/SRP boundary. A proposal built with the wrong utility's assumptions can be off by years of payback.

APS: the RCP rate and a 10-year lock

APS uses the Resource Comparison Proxy, set by the ACC in annual tranches. Published estimates for the current tranche vary — one industry analysis puts it near $0.062/kWh for 2025–2026, down from about 12.9¢ in 2017–2018^[6], while other references place the APS export credit in a roughly 6¢ to 10¢/kWh band^[2][8].

That spread is real and we won't paper over it. Treat any single APS RCP figure as an estimate and verify the current tranche with APS or in ACC filings before signing.

• A 10-year rate lock. The export rate at interconnection is guaranteed for a decade; future tranches for new customers can decline, but yours won't^[6].
• A grid access fee. APS charges roughly $0.93 per kW of solar capacity per month — about $78 a year on a 7 kW system^[6]. Those two features matter more than the exact rate.

SRP: outside ACC jurisdiction, with demand charges

SRP is the outlier: a public power utility governed by its own elected board, which moved away from retail net metering early.

New SRP solar customers go onto the E-27 Customer Generation Price Plan. Per the rate record filed with SRP's FY26 ratebook, E-27 Tier 1 took effect January 1, 2026 and uses net billing. The same record notes E-27 will be eliminated as of the November 2029 billing cycle, with customers moved to the E-16 plan^[7].

The critical difference is demand charges. SRP bills on your peak power draw in an interval during on-peak hours, not just total energy use. One high-demand hour — oven, dryer, and air conditioner together at 6 PM on a July weekday — drives a cost panels alone do nothing to reduce^[2][6].

Industry analyses put SRP's export credit around $0.028 to $0.035/kWh, with a fixed service charge near $32 per month and on-peak hours of 2 PM to 8 PM weekdays^[6]. SRP retired legacy net metering for new customers in November 2025^[6].

TEP: net billing plus a storage program

TEP operates under ACC net billing, with an export credit industry analysis places around $0.057/kWh and a 10-year rate lock^[6]. TEP's own materials confirm its battery program: Energy Storage Rewards pays $120 per kW, averaged over all events in a summer or winter season — about $360 per season, or up to $720 per year for a typical battery. TEP may call up to 100 control events a year, each up to four hours^[6][9].

What net billing actually means for your bill

Under true net metering, a kilowatt-hour you export at noon cancels one you import at 7 PM.

Arizona net billing doesn't work that way. APS, SRP, and TEP all use instantaneous or hourly netting^[6]. Each kilowatt-hour is credited when it flows, at the export rate then in effect. A midday export earns 3¢ to 10¢; an evening import costs the retail rate at that hour — often 18¢ to 26¢^[2][6].

• Self-consumption is king. Every kWh you use on site avoids a retail import; every kWh you export earns a fraction of that.
• Oversizing is now a design error. A system sized for annual offset exports its surplus at pennies and imports at dollars.
• Fixed charges don't go away. Grid access fees, service charges, and demand charges stay regardless of how much you generate^[2].

Time-of-use rates: where Arizona's battery case is built

On APS's Saver Choice plan, on-peak hours run 4 PM to 7 PM weekdays, with peak rates typically $0.18–$0.24/kWh and off-peak rates falling to $0.08–$0.10/kWh. Saver Choice avoids demand charges entirely, which is why it's often the recommended starting point^[6]. Other references describe a Saver Choice Plus structure with a broader summer window and higher peaks^[8]:

Rate structures and windows per SurgePV's Arizona incentive analysis^[6] and Arizona net metering reference^[8]. These are reported ranges; exact charges vary by rate rider, season, and ACC-approved adjustments. Verify against your own bill and the current tariff sheet.

Solar generation peaks around midday; the Arizona summer peak arrives at 4–8 PM as air conditioning load climbs. Production and demand are offset by several hours.

The battery solves that offset: store midday production, discharge into the peak window, and you avoid imports at 20–26¢ instead of exporting at 3–10¢.

What solar costs in Arizona in 2026

Arizona is a competitive install market. EnergySage's September 2026 data puts the statewide average at $2.28 per watt, with the average 13.56 kW system costing $30,973 before incentives^[10].

Source: EnergySage Arizona solar cost data, updated September 4, 2026 — average $2.28/W, $30,973 for a 13.56 kW system, typical range $26,327–$35,619^[10]. The 8/12/16 kW rows are scaled from the stated statewide $/W, not separate published figures.

Cost by city

Source: EnergySage city-level marketplace data for Arizona, updated September 4, 2026^{[10][11][12][13][14]}. Costs exclude incentives. Savings are EnergySage's 25-year projections and vary with usage, rate plan, and utility.

Arizona solar incentives in 2026: what survived

The $1,000 state tax credit: still alive

This one has a good paper trail because it's in statute. Arizona Revised Statutes §43-1083 allows a credit equal to 25% of the cost of a solar energy device installed at the taxpayer's residence, capped at $1,000^[16]. The details that trip people up:

• It's a lifetime aggregate, not annual. The statute caps claims across tax years at $1,000 in total for the same residence. Claimed $600 previously? You have $400 left^[16].
• Unused credit carries forward five years if your Arizona liability is lower than the credit in the installation year^[16].
• You must own the system. Lease and PPA customers don't own the equipment and don't qualify^[6].
• It's claimed on Arizona Form 310 with your state return^[6].

In practice the 25% formula rarely binds: a $21,000 system generates a $5,250 credit, but the cap holds you to $1,000. For nearly every buyer, it's effectively a flat $1,000 discount.

Sales tax and property tax treatment

Sales tax. A.R.S. §42-5061(M) requires that the amount received from sales of solar energy devices be deducted from the retail transaction privilege tax base; the retailer must register with the Arizona Department of Revenue^[17]. At the 5.6% state rate, that's roughly $1,120 saved on a $20,000 system^[6]. City and county levies may still apply, and the exemption is handled at the point of sale.

Property tax. A.R.S. §42-11054(C)(2) is unusually explicit: solar energy devices, grid-tied photovoltaic systems, and any system producing solar energy primarily for on-site consumption "are considered to add no value to the property on which such a device or system is installed"^[18]. That's a permanent, uncapped exclusion — no sunset, no size limit. Industry estimates put typical annual savings in Maricopa County at $100 to $300^[6]. Submit cost documentation to the county assessor by the statutory deadline^[18].

Utility battery programs: where the real money is now

With the federal credit gone, utility battery programs became Arizona's most valuable ongoing incentive. All three major utilities run one.

APS and SRP program terms per SurgePV's Arizona incentive analysis^[6]; TEP terms per Tucson Electric Power's own program page^[9]. Enrollment caps and end dates apply: APS Storage Rewards is approved for five years and capped at 5,000 participants; SRP Battery Partner runs through April 30, 2030 and is capped at 5,000 customers^[6].

APS Storage Rewards replaced an earlier upfront Residential Battery Pilot that paid up to $3,750. The new structure is performance-based: batteries earn roughly $110 per average kilowatt of output per season, running May 1 through October 31, with up to 60 discharge events of one to four hours each^[6]. For a 13.5 kWh battery at about 6 kW output, that's roughly $660 per season.

SRP Battery Partner requires compatible hardware — as of 2026, FranklinWH and Tesla are participating partners^[6]. Check compatibility before selecting equipment; this is expensive to discover afterward.

What Arizona does not offer

• No federal residential credit in 2026. Homeowner-owned systems installed this year get nothing under Section 25D — including homeowner-owned battery storage, since the credit's battery provision ended with the rest of 25D^[3][15].
• No statewide net metering mandate. There's no fallback guarantee. Whatever your utility's tariff says is what you get^[2].

Batteries in Arizona heat: why chemistry matters here

Arizona is the hardest thermal environment for home storage in the country, and it isn't close. A battery in a Phoenix garage can sit at 110°F ambient for weeks.

Two chemistry families dominate residential storage: lithium iron phosphate (LFP) and nickel manganese cobalt (NMC). LFP has a higher thermal runaway onset temperature and a more stable olivine cathode structure, and comparative studies of large-capacity cells under external thermal triggers consistently find LFP resists runaway propagation more effectively^[19]. That's a safety property first — and it matters for longevity, since sustained heat is a primary driver of capacity fade.

Panels derate too: PV modules lose roughly 0.3–0.5% of efficiency per degree Celsius above 25°C at standard test conditions^[20]. An array on a 115°F roof produces below nameplate during the hottest hours — precisely when demand peaks.

The design logic follows. Arizona does not reward the largest possible array. It rewards an array that produces reliably through the afternoon, paired with storage sized to bridge the 4–8 PM peak. For model comparisons, see our Best Solar Batteries 2026 guide.

The math: solar-only vs. solar + battery

Let's make the net billing gap concrete. These are industry-modeled figures for a 7 kW system^[6] — an illustration of the mechanics, not a quote.

Illustrative modeling per SurgePV's Arizona incentive analysis^[6]. Assumes 11,000 kWh annual household use, 55% self-consumption without a battery and 80% with one, and roughly 11,500 kWh annual system output. These are modeled scenarios, not measured results or quotes.

Read that table honestly. Payback in Arizona is now a 12-to-16-year proposition on these assumptions — longer than before the federal credit expired, and longer than under retail net metering. Anyone promising 5-to-7-year payback in 2026 is working from outdated assumptions.

But notice what the battery does. It changes the source of savings. The solar-only case earns $321 a year from exports. The battery case earns nothing extra from exports and instead avoids $1,600 in energy and demand charges while collecting $660 from the utility. The revenue comes from avoided costs and grid services.

That's the shift. Arizona solar in 2026 is a self-consumption and demand-management play, not an export play. Our Is Solar Worth It in 2026 guide covers the post-25D national picture.

The lease and PPA route

One path still accesses federal support: letting a third party own the system. Under a lease or power purchase agreement, a company owns the panels on your roof. Because the system is commercial property for tax purposes, it can qualify for the Section 48E Clean Electricity Investment Tax Credit — a 6% base rate, rising to 30% with prevailing wage and apprenticeship compliance, for projects beginning construction by July 4, 2026 or placed in service by December 31, 2027^[15].

That's why lease and PPA providers can still advertise attractive Arizona payments while a cash purchase gets nothing federal — the financier claims the credit and passes some through. The same logic applies to batteries: a homeowner-owned battery in 2026 gets no 25D credit, but a third-party-owned one may qualify under 48E^[15].

The tradeoffs are standard: no ownership, no equity, no boost to home value, and a contract that complicates a sale. See our PPA vs Lease vs Buy guide.

How to choose an Arizona installer

Arizona requires solar contractors to hold a Registrar of Contractors (ROC) license. Verify it at roc.az.gov before signing^[21]. Beyond licensing, the net billing transition has exposed bad habits in how Arizona systems get sold. What to insist on:

1. Confirm your utility first. APS, SRP, TEP, UniSource, or a co-op changes everything. If your installer doesn't ask, that's a warning sign^[2].
2. Get three quotes and compare price per watt, not total cost. Arizona's average is $2.28/W^[10].
3. Demand hourly net-billing modeling, not a flat export assumption. Under instantaneous netting, when a kilowatt-hour flows determines its value^[6].
4. Ask how the system is sized. A design targeting annual offset rather than self-consumption was built for a tariff that no longer exists.
5. Insist on demand charges in the SRP model. Modeling only energy charges overstates savings^[2][6].
6. Get fixed charges in writing. APS's roughly $0.93/kW monthly fee and SRP's roughly $32 monthly charge are not optional^[6].
7. Check battery program compatibility first — on SRP, only specific manufacturers participate^[6].
8. Be skeptical of any claimed federal tax credit on a purchase. Owner-purchased solar gets nothing under 25D in 2026^[3]. If a salesperson says otherwise, ask for the code section.

Frequently asked questions

Does Arizona have net metering in 2026?

Not in the retail-rate sense, and not statewide. There's no single net metering statute. The ACC sets export compensation for APS, TEP, and UniSource under below-retail net billing; SRP operates outside ACC jurisdiction under its own E-27 plan; cooperatives and municipal utilities set their own terms. Export credits generally run roughly 3¢ to 10¢/kWh^[2][6][7].

What is the Arizona state solar tax credit worth in 2026?

Under A.R.S. §43-1083, the credit is 25% of the cost of a solar energy device at your residence, capped at $1,000. The cap is a lifetime aggregate per residence, not annual, so any amount already claimed is subtracted. Unused credit carries forward up to five consecutive taxable years, and it's claimed on Arizona Form 310. You must own the system — lease and PPA customers don't qualify^[6][16].

Did the federal solar tax credit really expire?

Yes, for homeowner-owned systems. The One Big Beautiful Bill Act (Public Law 119-21) terminated Section 25D for expenditures made after December 31, 2025. An expenditure is generally treated as made when installation is completed — not when you sign or pay a deposit. Section 48E remains available for commercial and third-party-owned residential systems through 2027^[3][15].

Do I need a battery for solar in Arizona?

Financially, it increasingly helps. Exports earn 3¢ to 10¢/kWh while evening imports can cost 18¢ to 26¢/kWh, and a battery shifts midday production into that peak window. Utility programs add $660 to $1,320 per year on top. The case is strongest for SRP customers on E-27, where battery discharge can also cut demand charges^[2][6][9].

Does solar increase my Arizona property taxes?

No. A.R.S. §42-11054(C)(2) states that solar energy devices, grid-tied photovoltaic systems, and other systems producing solar energy primarily for on-site consumption add no value for assessment purposes. There's no sunset and no size cap. Submit cost documentation to your county assessor within the statutory deadline^[18].

Is Arizona electricity expensive enough to justify solar?

That's the counterintuitive part. Arizona's residential rate was 15.18¢/kWh in June 2026, below the national average of 18.34¢/kWh^[5]. The case rests on the resource — 6.54 peak sun hours per day, highest in the country^[1] — and on the summer peak/off-peak spread, not on high rates. To see how a high-rate market changes the math, our California guide covers 34.74¢/kWh territory.

Which is better in Arizona heat, LFP or NMC batteries?

LFP has a structural advantage: its olivine cathode chemistry has a higher thermal runaway onset temperature and resists runaway propagation better than NMC under external thermal triggers, per comparative studies of large-capacity cells^[19]. Where a garage battery can sit at 110°F ambient for weeks, weigh that stability alongside price, warranty terms, and utility program eligibility.

Bottom line

Arizona in 2026 is a great solar resource market with a complicated billing environment. Plan for both halves.

What determines your outcome:

• Your utility. APS, SRP, TEP, UniSource, a co-op, or a municipal utility — each is a different calculation. It's why "Arizona solar" isn't one market^[2].
• Instantaneous netting. Self-consumption is worth roughly 2 to 5 times more than export^[6].
• Whether you add a battery. It shifts the value stack from export credits to avoided peak imports, demand-charge reduction, and utility payments worth $660 to $1,320 a year^[6][9].
• Realistic payback expectations. 12 to 16 years on the modeled scenarios here^[3][6].

Our verdict: Arizona's sun is the best in the country, and the state's three tax provisions — the $1,000 credit, the sales tax exemption, and the permanent property tax exclusion — are useful and durable. But there's no statewide net metering guarantee, and owner-purchased systems get no federal credit in 2026. If you're staying long term, a right-sized array with storage built around your utility's peak window still makes sense.

Run your own numbers with our solar savings calculator, which uses real EIA rates and NREL sun data. For how the three largest solar states differ, see our Texas Solar Guide and California Solar Guide.