From your first quote to generating power, residential solar in Arizona takes 6-10 weeks. Most of that time is waiting — on permits, inspections, and utility approval. The actual installation is typically 1-3 days. Here's exactly what happens at each step.
Installation Timeline Overview
| Step | Duration | Who Does It |
|---|---|---|
| 1. Quotes & Contract | 1-2 weeks | You + installer(s) |
| 2. Site Survey & Design | 1 week | Installer |
| 3. Permitting | 1-3 weeks | Installer → City |
| 4. Installation | 1-3 days | Installer crew |
| 5. City Inspection | 3-7 days | City inspector |
| 6. Utility Interconnection | 2-4 weeks | APS or SRP |
| Total | 6-10 weeks |
Step 1: Getting Quotes (1-2 Weeks)
Get at least 3 quotes from different installers. Review our financing guide before signing so you know what to compare. Each quote should include:
- • System size (kW) and number of panels
- • Panel and inverter brands/models
- • Total installed cost before and after incentives
- • Estimated annual production (kWh)
- • Warranty terms (panels, inverter, workmanship)
- • Financing options if applicable
Watch Out For
Be wary of door-to-door salespeople who pressure you to sign same-day. Arizona has a 3-day right to cancel any solar contract (ARS §44-5001). Take your time comparing quotes. A good installer will happily wait for you to make an informed decision.
Step 2: Site Survey & Design (1 Week)
After signing a contract, your installer sends a technician to survey your home. Your roof type plays a big role in this step. They'll evaluate:
- • Roof condition: Age, material, structural integrity
- • Roof orientation: South and west-facing sections are best
- • Shading: Trees, neighboring buildings, chimneys
- • Electrical panel: May need upgrade if it's under 200 amps
- • Attic access: For running conduit and mounting hardware
The engineering team then creates the final system design — panel layout, string configuration, and electrical diagrams needed for permitting.
Step 3: Permitting (1-3 Weeks)
Your installer submits permit applications to your city's building department. Permit timelines vary by city:
| City | Typical Permit Time | Notes |
|---|---|---|
| Gilbert | 5-10 business days | Online portal available |
| Surprise | 5-10 business days | Standard residential process |
| Queen Creek | 5-10 business days | Growing fast — occasional delays |
| Buckeye | 5-15 business days | High growth area, can be slower |
| Goodyear | 5-10 business days | Streamlined solar permit process |
Your installer handles all permitting. You typically don't need to do anything during this step.
Step 4: Installation Day (1-3 Days)
This is the exciting part — and it's faster than most people expect. A typical residential install takes 1-2 days. Larger systems or complex roofs may take 3 days.
Mounting & Panels
Crew installs roof mounting hardware (racking), attaches panels, and runs conduit. For tile roofs, tiles are removed and replaced around the mounts (adds time).
Electrical & Inverter
Inverter installed (near electrical panel), wiring connected, system grounded. If you're adding a battery, it's installed during this phase. The system is complete but NOT turned on yet — it needs inspection first.
What to Expect During Installation
- • Crew of 2-4 people, usually arrives 7-8 AM
- • Power will be briefly shut off for electrical connections
- • You don't need to be home the entire time, but should be available
- • Expect some noise from drilling and roof work
- • The crew will clean up at the end of each day
Step 5: City Inspection (3-7 Days)
After installation, the city sends an inspector to verify the work meets building and electrical codes. Your installer schedules this. The inspection itself takes 30-60 minutes. Common things inspectors check:
- • Proper grounding and electrical connections
- • Roof penetrations are properly sealed
- • Rapid shutdown capability (required by code)
- • Correct labeling on panels, disconnects, and electrical panel
- • Conduit properly secured and weatherproofed
Most systems pass inspection on the first visit. If there are minor issues, the installer fixes them and schedules a re-inspection.
Step 6: Utility Interconnection (2-4 Weeks)
This is usually the longest wait. After city inspection passes, your installer submits the interconnection application to your utility (APS or SRP). The utility reviews the application, may swap your meter for a bidirectional one, and grants Permission to Operate (PTO).
| Utility | Typical PTO Timeline | Notes |
|---|---|---|
| APS | 2-4 weeks | Online portal for tracking status |
| SRP | 2-4 weeks | Must apply for E-27 rate plan simultaneously |
Do NOT Turn On Before PTO
Running your system before receiving Permission to Operate violates your interconnection agreement and can result in penalties or disconnection. Wait for the official green light from your utility.
Tips to Speed Up the Process
Respond quickly to any requests from your installer — documents, signatures, or site access. Delays on your end add days to the timeline.
Check your electrical panel early. If it needs an upgrade (common in homes with 100-amp panels), this adds 1-2 weeks and $1,500-$3,000 to the project.
Avoid peak installation season (March-May) if possible. Summer is slower for installers, which means faster scheduling and sometimes better pricing.
Notify your HOA early (if applicable). Submit your installation plan during the design phase so HOA review runs in parallel with permitting. See our HOA solar rules guide for details.
Sources
- APS — Solar interconnection process and timelines (aps.com)
- SRP — Customer generation interconnection requirements (srpnet.com)
- Arizona Revised Statutes §44-5001 — Door-to-door sales cancellation rights
- Maricopa County — Residential solar permit requirements