How to Choose a Solar Installer in Arizona (2026)

Your solar installer determines far more than just the price you pay — they affect system performance, warranty reliability, interconnection speed, and whether you actually capture all available tax credits. In Arizona's crowded installer market, choosing wrong can mean years of underperformance or a warranty backed by a company that no longer exists.

This guide walks through how to evaluate Arizona solar installers systematically: licenses to check, warranties to compare, questions to ask, and red flags to avoid. For context on what a system should cost before you start getting quotes, review our Arizona solar panel cost guide. And for the full process of going solar from start to finish, see our step-by-step guide to going solar in Arizona.

Step 1: Verify the Right Licenses

Arizona requires solar installers to hold a valid contractor's license through the Arizona Registrar of Contractors (ROC). You can verify any installer's license at roc.az.gov in under two minutes. What to check:

• License status: Active (not suspended, expired, or revoked)
• License class: Solar electrical work typically requires an A-17 (Electrical) or CR-11 (Solar) classification
• Bond and insurance: Verify the license is bonded — this protects you if work is incomplete
• Complaint history: The ROC database shows any filed complaints and their resolution

Additionally, check that the company's electricians hold individual electrical licenses through the Arizona Department of Fire, Building and Life Safety — required for the electrical work involved in solar installation.

Red flag: Any installer who cannot provide their ROC license number immediately, or who asks you not to check — walk away.

Step 2: Evaluate Warranty Coverage

Solar systems have multiple warranty layers from multiple parties. Understanding each one is critical before signing.

Equipment Warranties (from the manufacturer)

• Panel product warranty: Covers defects in the panel itself. Industry minimum: 12 years; premium brands: 25 years.
• Panel performance warranty: Guarantees minimum output over time. Most panels warrant 80% output at year 25. Premium panels like SunPower Maxeon warrant 92% at year 25.
• Inverter warranty: String inverters typically 10–12 years; microinverters (Enphase) typically 25 years. Some installers offer inverter warranty extensions.
• Battery warranty: Typically 10 years with minimum cycles guaranteed.

Installer Workmanship Warranty

This covers installation defects — roof penetration leaks, wiring problems, mounting failures. Industry standard is 10 years; better installers offer 25 years. This warranty is only as good as the company that issues it. A 25-year workmanship warranty from a company that goes out of business in year 3 is worthless.

Step 3: Get at Least Three Quotes

The solar industry has a wide spread in pricing and quality. Getting fewer than three quotes means you're likely overpaying or missing a better option. Here's what to request in each quote:

• Total system cost (gross, before incentives)
• Itemized breakdown: panels, inverters, mounting, electrical, labor, permits
• System size (kW DC and AC), panel brand and model, inverter brand and model
• Expected first-year production (kWh) and the methodology used
• All warranties (equipment + workmanship) in writing
• Timeline: permit submittal, installation, interconnection application, estimated PTO
• Financing options and terms if applicable

What a Quote Should NOT Include (Red Flags)

• High-pressure tactics to "sign today" before comparing
• Vague line items like "materials and labor" with no breakdown
• Promised savings that seem unrealistically high
• No mention of utility interconnection timeline
• An unusually low price with no explanation of the equipment tier

Step 4: Evaluate Company Longevity

Arizona has seen multiple solar installer closures, including large ones. When you sign a 25-year workmanship warranty with a company, you're betting they'll exist in 10 years. Evaluate:

• Years in business in Arizona: Look for 5+ years operating in-state. New subsidiaries of national brands can be tricky to evaluate.
• Local vs. national: Both have tradeoffs. Locals may have deeper utility relationships; nationals may have more capital but use subcontractors.
• Installation crew: Does the company use its own licensed employees or third-party subcontractors? Subcontractor chains add quality-control risk.
• Review volume: 200+ Google reviews over 3+ years is a good sign. Recent reviews matter most — look for any pattern shift in recent months.

Step 5: Assess Utility-Specific Expertise

Your installer needs to be fluent in your specific utility's programs and processes. In Arizona this means:

APS Territory

Your installer should understand APS's net billing (RCP) rate, which rate plans work best for solar customers, and APS's interconnection application process. See our APS solar buyback rate guide for background on what questions to ask.

SRP Territory

SRP's demand charges are the critical factor for system sizing and battery ROI. An installer who doesn't address demand charges in their proposal for an SRP customer doesn't understand the territory. Review our SRP solar plan guide before your installer meetings.

TEP Territory (Tucson)

TEP's net billing rate ($0.057/kWh) is the lowest of the three major Arizona utilities — this affects optimal system sizing and whether a battery adds meaningful value.

Key Questions to Ask Every Installer

1. What is your ROC license number and what classifications does it cover?
2. Are your installation crew members your direct employees or subcontractors?
3. What is the workmanship warranty term, and what company specifically backs it?
4. What production estimate methodology do you use? (PVWatts, actual shade analysis, etc.)
5. Who handles the utility interconnection application, and what's your typical timeline from install to PTO?
6. What happens if my roof leaks after installation — what's your process?
7. Do you provide monitoring? What app? What's the response time if I flag a problem?
8. Have you installed in my specific neighborhood before? Any HOA experience?

National vs. Local Installers in Arizona

Understanding the Contract Before You Sign

Solar contracts can run 15–30 pages. Key things to read carefully:

• Cancellation terms: How long do you have to cancel after signing? Arizona law may provide a 3-day right of rescission for door-to-door sales.
• Production guarantees: Are any savings or production numbers guaranteed, or just estimated?
• Lien rights: Can the installer place a lien on your home if there's a payment dispute?
• Financing terms: If a loan is embedded, what is the APR and the requirement to apply the tax credit as a lump-sum payment?
• Change order process: What if conditions discovered during installation change the scope or price?