Wagon Wheel, AZ Solar Permit Terms & Conditions

1. Scope & definitions

These terms apply to residential photovoltaic (PV) systems — rooftop or ground-mount, with or without an energy storage system (ESS) — installed in Wagon Wheel and other unincorporated parts of Mohave County, Arizona. Commercial and utility-scale projects follow a separate plan-review track.

• AHJ — Authority Having Jurisdiction. For Wagon Wheel, this is Mohave County Development Services (Building Division), not a city department.
• PV system — modules, inverter(s), DC and AC conductors, racking, rapid-shutdown device, and disconnects.
• ESS — battery energy storage system; requires a separate sub-permit and UL 9540 / 9540A listing.
• MLPE — module-level power electronics (microinverters or DC optimizers); used to satisfy NEC 690.12 rapid shutdown.
• PTO — Permission to Operate, issued by the utility after final inspection.

2. Governing codes

Mohave County has adopted the following code editions for residential solar:

• 2017 NEC (NFPA 70) — Articles 690 (PV), 705 (interconnected sources), and 706 (ESS) govern electrical design, OCPD sizing, grounding, and rapid shutdown.
• 2018 IBC / 2018 IRC — structural attachment, dead/live loads, and roof-penetration flashing.
• 2018 IFC §1205 (and IRC R324) — fire-service access pathways and setbacks.
• ASCE 7-16 — wind and snow load reference. Wagon Wheel sits in a 115 mph (Risk Cat. II) basic wind zone with negligible ground snow load; structural calcs should reflect that.

2.1 Fire setbacks & access pathways

Per IFC §1205 and Mohave County amendments, single-family rooftop arrays must keep:

• 36" of clear ridge from the highest point of the array to the ridge.
• 18" setback from each hip and valley.
• A 36"-wide access pathway from eave to ridge on at least one roof plane.

Single-ridge dwellings may qualify for reduced setbacks if a smoke-ventilation plan is submitted with the application.

3. Permitting authority & jurisdiction

Because Wagon Wheel is unincorporated, the building permit is issued by Mohave County Development Services. There is no city permit counter — applications are submitted to the County Building Division either in person, by mail, or through the county's online portal. The same department handles plan review, inspections, and certificate of occupancy actions for solar.

4. Application requirements

A complete residential solar submittal includes:

1. Mohave County building permit application, signed by the licensed contractor or homeowner-of-record.
2. Site plan showing property lines, existing structures, the array footprint, setbacks, and equipment locations (inverter, ESS, AC disconnect).
3. Electrical single-line diagram covering the DC string layout, OCPDs, conductor sizing, grounding, rapid-shutdown device, and AC point of interconnection.
4. Structural attachment detail or a stamped PE letter for the racking and substrate (rafter spacing, fastener spec, uplift calculation).
5. Equipment cut sheets for modules, inverter(s), ESS (if any), rapid-shutdown device, and disconnects.
6. Mohave Electric Cooperative or UniSource Energy interconnection application — submit to the utility in parallel; the AHJ will not issue PTO without it.
7. Arizona ROC contractor license (or a homeowner declaration of work, if self-installing on a primary residence).

5. Fees & timelines

Typical Mohave County residential solar permit fees run around $185 for a standalone PV system, valuation-based. Adding an ESS sub-permit adds roughly $45. Plan review takes about 10–15 business days for complete submittals; incomplete packages restart the clock.

6. Inspections, sequence & PTO

1. Rough / structural inspection — before roof close-up; verifies attachment, flashing, and DC wiring.
2. Final electrical inspection — verifies AC interconnection, labels, working clearances, and rapid-shutdown function.
3. Permission to Operate (PTO) — issued by MEC or UniSource after the signed final inspection card is uploaded to the utility.

Common red-tag items: missing rapid-shutdown labels, undersized EGC, unsealed roof penetrations, working clearance < 36" in front of the inverter, and missing AC disconnect placard.

7. Net metering & interconnection

Arizona no longer offers full retail net metering. Under ACC Decision No. 75859, exports are credited at an Export Rate set from a 5-year rolling avoidable-cost study, recalculated annually with a 10% year-over-year step-down cap. Mohave Electric Cooperative members and UniSource customers each receive bill credits at their utility's current export rate.

Residential systems on the simplified (Level 1 / Fast-Track) interconnection path are typically capped at 10 kW AC and 125% of the prior 12-month load. Larger systems require a Level 2 study and may take longer to energize.

8. HOA rules — Arizona Revised Statutes §33-1816

Arizona is a solar-rights state. ARS §33-1816 prohibits HOAs and CC&Rs from effectively banning rooftop solar. HOAs may impose reasonable aesthetic restrictions — for example, requiring conduit painted to match the roof or limiting visible junction boxes — only if those restrictions do not significantly:

• impair the system's performance, or
• increase the system's cost.

HOAs cannot require ground-mount instead of rooftop, or restrict array orientation in a way that materially reduces production.

9. Liability, disclaimers & T&Cs

• This page is informational guidance, not legal advice.
• The AHJ's current adopted code and fee schedule supersede anything stated here.
• Always verify the latest Mohave County requirements before submitting an application — codes, fees, and forms change.
• Permit-in-a-Box is not affiliated with Mohave County, MEC, UniSource, or the Arizona Corporation Commission.
• Generated permit packets are a starting point; the licensed installer of record remains responsible for code compliance and the final stamped submittal.

10. Official sources

• www.mohave.gov
• www.mohave.gov
• www.mohaveelectric.com
• www.uesaz.com
• www.azcc.gov