How Long Does it Take to Install Solar Panels in Arizona?

Published: July 22, 2026

Quick answer: In the Phoenix metro area, most homeowners can expect their solar panel system to be fully installed and operational within 60–90 days from signing a contract. The physical installation itself takes just 1–3 days—the rest of the timeline is spent on system design, permitting, and utility approval.

Phoenix gets over 300 days of sunshine per year. That’s not a coincidence—it’s exactly why Arizona consistently ranks among the top states for solar adoption. But once you decide to go solar, one question almost always comes up first: How long is this actually going to take?

The short answer is 60–90 days, start to finish. The longer answer involves several moving parts—permits, utility approvals, and scheduling—that every homeowner in the Phoenix metro area should understand before signing on the dotted line. This guide breaks down each stage of the solar installation timeline in Arizona, explains what can cause delays, and walks you through how our process is built to keep things moving efficiently.

What Is the Full Solar Installation Timeline in Arizona?

The solar installation process in Arizona has four major phases: system design, permitting, physical installation, and final inspection with utility interconnection. Each phase has its own timeline, and some overlap.

Here’s a general breakdown for Phoenix metro homeowners:

The panels go up in a day or two. Everything else—that’s where the time goes.

Phase 1: System Design — What Happens After You Sign?

After you sign your contract, our engineering team gets to work designing your solar system. This means analyzing your roof structure, orientation, shading, and energy usage to determine the ideal panel layout and system size.

We may revisit your property to take additional measurements and photos. Once the design is complete, we send it to you for approval. This step matters more than most homeowners realize—your feedback determines what gets submitted to the city for permits.

Pro tip: Review your design promptly. Delays in homeowner approval are one of the most common reasons solar timelines stretch beyond 90 days. If you receive a design on a Monday, try to respond within 24–48 hours rather than waiting until the weekend.

Phase 2: Permitting in the Phoenix Metro Area

Once you’ve approved the design, we submit permit applications to your local city or municipality. In the Phoenix metro area, this includes cities like Phoenix, Scottsdale, Tempe, Mesa, Chandler, Gilbert, and Peoria—each with slightly different processing times and requirements.

Most Phoenix-area municipalities process solar permits within 2–4 weeks, though some jurisdictions move faster. Arizona has made meaningful strides in streamlining the permitting process for residential solar, and many cities now offer online portal submissions that cut days off the timeline.

A few things that can slow permitting down:

• HOA approval requirements — Some communities in the Valley require HOA sign-off before or alongside city permits. Arizona law (A.R.S. § 33-1816) does protect homeowners’ right to install solar, but HOAs may still regulate placement and aesthetics.
• Unpermitted prior work — If your home has unpermitted electrical work, a deck, or a panel upgrade that wasn’t properly documented, the permitting authority may require that to be resolved first.
• Ground-mounted systems — These typically require additional steps, including soil studies or surveys, which can extend the permitting phase.

Our team handles the permitting process on your behalf and stays in active communication with city offices to keep things on track.

Phase 3: The Physical Solar Installation — How Long Does It Actually Take?

This is the part most homeowners look forward to—and it’s also the fastest. Once permits are approved and your installation is scheduled, our crew typically completes the job in:

• 1 day for a standard rooftop solar-only system
• 1–2 days for a solar-plus-battery system
• 2–3 days for a larger residential or commercial system

Our installation crews are local Phoenix-area specialists—not subcontractors from out of state. We staff our teams to maintain consistent scheduling, and we build enough runway into our calendar so your installation date doesn’t get pushed back due to overbooked crews.

If your system includes a battery backup, the utility company may need to schedule a temporary “power drop” to allow safe battery connection. This step is coordinated through APS (Arizona Public Service) or SRP (Salt River Project), depending on your service area, and is not within our direct control—but we initiate the request early to minimize wait times.

Phase 4: Inspection and Utility Interconnection in Arizona

Panels are up. Now two final steps stand between you and a live solar system.

City Inspection: A local inspector will visit your property to confirm the system was installed correctly, meets all electrical code requirements, and is securely mounted to the roof. This typically happens within a few days of installation completion in the Phoenix area.

Utility Interconnection (APS or SRP): This is often the most variable step in the entire solar installation timeline. Your utility company must issue “Permission to Operate” (PTO) before your system can legally connect to the grid and begin offsetting your electricity usage.

• APS typically processes interconnection applications within 15–30 business days.
• SRP has its own interconnection review process, and timelines can vary based on application volume and system complexity.

We submit the interconnection application on your behalf—often before or during the physical installation—to shave as much time off this phase as possible.

What Can Delay Your Solar Installation Timeline?

Most delays fall into one of three categories:

1. Homeowner response time — Slow feedback on design approvals or permit applications is the #1 controllable cause of delays. Being responsive shortens your timeline significantly.
2. Utility scheduling — APS and SRP operate on their own timelines. We can’t control how quickly they schedule inspections, but we file interconnection applications early and follow up consistently.
3. Roof conditions — If your roof needs repairs or replacement before installation, that work must be completed first. We’ll flag any concerns during the design phase so there are no surprises.

Beware of any solar company that promises installation in two weeks. That timeline skips critical permitting steps and often leads to failed inspections, rework, and longer delays down the road.

Why Phoenix Homeowners Choose Us for Solar Installation

Based in Phoenix since 2009, we’ve helped thousands of Arizona homeowners make the switch to solar. We’re not a national chain that subcontracts your job to the lowest bidder—we’re a locally owned, all-in-one solar company with an in-house team of specialists who design, install, and service every system we build.

Our award-winning project management process keeps your installation on schedule and your communication clear. You’ll always know where you are in the process and what’s coming next.

Start Your Solar Timeline Today with Solar Topps

Every day you wait to go solar is another month of full-price electricity from APS or SRP. The 60–90 day installation timeline means the sooner you start, the sooner you save.

Contact our team today for a free, no-pressure consultation. We’ll assess your home, design your system, and give you a clear, realistic timeline from contract to your first day of solar power.

Frequently Asked Questions About Solar Installation in Arizona

How long does it take to install solar panels in Phoenix, AZ?

In the Phoenix metro area, the full solar installation process—from signing a contract to receiving Permission to Operate—typically takes 60–90 days. The physical installation itself takes 1–3 days. The remaining time is spent on system design, city or county permitting, and utility interconnection with APS or SRP.

How long does it take to get a solar permit in Arizona?

Solar permit processing times vary by municipality. In Phoenix and surrounding cities like Mesa, Chandler, Scottsdale, and Gilbert, permits are typically approved within 2–4 weeks. Arizona has streamlined many of its permitting processes for residential solar, and online submission portals have helped reduce processing times in several cities.

Does my HOA affect my solar installation timeline in Arizona?

Arizona law (A.R.S. § 33-1816) protects homeowners’ right to install solar panels, but HOAs may still review and comment on panel placement and system aesthetics. If your community requires HOA approval, this step should happen in parallel with city permitting to avoid extending the timeline.

How long does APS or SRP take to approve solar interconnection?

APS (Arizona Public Service) and SRP (Salt River Project) each have their own interconnection review timelines. APS typically takes 15–30 business days to process interconnection applications. SRP timelines vary. Submitting the interconnection application early—before or during physical installation—helps minimize delays.

Can I speed up my solar installation timeline?

Yes. The fastest way to keep your solar installation on schedule is to review and approve your system design promptly, respond quickly to any documentation requests, and ensure no unpermitted work on your property could complicate the permitting review. Choosing a reputable local installer like Solar Topps with strong project management also reduces the risk of inspection failures and rework.

What happens if my solar installation fails inspection?

If a local inspector identifies an issue with the installation—improper mounting, electrical code violations, or safety concerns—the installer must correct the problem before re-inspection. This can add weeks to the timeline. Choosing an experienced, licensed installer with a strong inspection pass rate is one of the best ways to avoid this outcome.