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Contractors & ConstructionSolar Panel Installation 6 min read

Questions to Ask Before Signing a Solar Panel Contract in Peoria

By Saguaro List ·

Going solar in Peoria is a smart long-term investment — but the contract you sign can make or break the experience. Before you put pen to paper, these are the questions every Peoria homeowner should ask.

Is the Installer Licensed and Bonded in Arizona?

Arizona's Registrar of Contractors (ROC) requires solar installers to hold an active license — typically an A-17 (solar) or a broader electrical classification. Ask the company for their ROC license number and verify it at the ROC's public lookup tool before the conversation goes any further. Also confirm they carry:

  • General liability insurance (minimum $1 million per occurrence is common)
  • Workers' compensation coverage
  • A surety bond

An unlicensed contractor may offer lower bids, but you have zero recourse through the ROC if something goes wrong on your roof in the middle of monsoon season.

What Exactly Does the Contract Cover?

Read every line of scope-of-work language. A vague contract is a liability. Ask the installer to clarify:

  • Number and wattage of panels — not just "a 7 kW system"
  • Inverter brand and type — string vs. microinverters vs. power optimizers
  • Racking system — especially important for Peoria's tile roofs, which require specialized mounts
  • Electrical panel upgrades — will one be needed, and is it included in the quoted price?
  • Permitting fees — the City of Peoria requires building and electrical permits; confirm who pulls them and who pays

If the contract says "materials subject to change," push back. Lock in the specific equipment.

Who Handles Permits and HOA Approvals?

In Peoria, your installer must pull permits from the city and schedule inspections before the system can be activated by APS or SRP. Ask whether the company handles this end-to-end or hands it off to you.

If you live in a master-planned community — and plenty of Peoria homeowners do — you likely also need HOA approval for panel placement and visibility. Some HOAs restrict roof-mounted systems visible from the street. A good installer knows this and will submit the application on your behalf. If they've never heard of the process, that's a red flag.

How Is the System Sized for Peoria's Climate?

Peoria averages over 300 sunny days a year, which is excellent for solar production — but summer heat above 110°F can actually reduce panel efficiency. Ask:

  • What assumptions did you use for peak sun hours and temperature derating?
  • How does your production estimate account for monsoon-season cloud cover (typically July–September)?
  • Is the system sized for current usage, or have you accounted for a future EV or pool pump?

A reputable installer will show you a production model, not just a single annual kWh estimate.

What Are the Warranty Terms — and Who Backs Them?

This is where many contracts get murky. There are at least three separate warranties to understand:

Warranty TypeTypical RangeWho Provides It
Panel power output25–30 yearsPanel manufacturer
Panel workmanship10–25 yearsPanel manufacturer
Inverter10–25 yearsInverter manufacturer
Installation/labor5–15 yearsYour installer
Roof penetration warrantyVaries widelyYour installer

The critical question: if the installer goes out of business, who honors the labor warranty? Ask if they use a third-party warranty backstop or workmanship bond. In a competitive market, installer turnover happens.

What Are the Financing Terms, and What Is the True Cost?

Peoria homeowners can pay cash, take a solar loan, or enter a lease/PPA (power purchase agreement). Each has different implications for your Arizona TPT (transaction privilege tax) treatment, your home resale, and your ability to claim the federal Investment Tax Credit (ITC).

  • Cash/loan purchases typically qualify for the federal ITC (currently 30% — verify current rates with a tax professional)
  • Leases/PPAs mean the installer owns the panels; you buy the power, not the equipment
  • Arizona offers a state income tax credit as well — confirm current eligibility with an accountant

Ask for the total system cost, the effective cost after incentives, and — if financing — the APR, loan term, and whether there's a dealer fee baked into the loan that inflates the system price.

What Happens During and After Installation?

Get a clear project timeline in writing. A typical Peoria residential install runs one to three days for physical work, but permitting and utility interconnection can add weeks. Confirm:

  • Estimated activation date, including APS/SRP interconnection approval
  • Site cleanup responsibilities — especially important with tile roofs where debris can clog gutters
  • Monitoring app access — most modern systems include real-time production monitoring
  • Process for warranty claims — email, phone, or portal?

You can also browse solar installation professionals serving Peoria to compare local companies before you request quotes.

Red Flags to Watch For

  • High-pressure "today only" pricing
  • Verbal promises not reflected in the written contract
  • No physical Arizona business address
  • Refusal to provide the ROC license number upfront
  • Extremely low bids with vague equipment specs

If anything in the contract feels off, ask for a 48-hour review period. Any reputable company will agree.


Signing a solar contract is a 25-year commitment — the same lifespan as your panels. Take your time, compare at least three bids from licensed Arizona contractors, and make sure every promise is in writing. You'll find vetted construction and solar businesses in Peoria through the Saguaro List directory, and you can also explore the broader Arizona solar installation category to expand your search statewide. The right installer will welcome every question on this list.

Find a trusted Solar Panel Installation pro in Peoria

Browse vetted local businesses on Saguaro List.

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