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Solar PV Permit in Unincorporated Natrona County, Wyoming

Required for rooftop or ground-mounted residential/accessory solar photovoltaic (PV) installations in unincorporated Natrona County. Classified in the Natrona Next Zoning Resolution as a 'Solar Generator, Accessory' (Section 4.10.13) — a use PERMITTED (P) by-right in every zoning district in the county. The electrical interconnection portion is processed on the county's standard Electrical Permit Application ('Solar/PV Installation' is a listed Nature of Project option).

Verified 2026-07-01 · Source

When you need this permit

  • Zoning: Accessory solar generators are a permitted (by-right) accessory use in ALL zoning districts per Natrona Next Zoning Resolution § 4.10.13 — no special use / conditional use permit needed for a single-property system serving up to that property
  • Ground-mounted systems: must meet the applicable zoning district's minimum accessory-structure setback (or principal-structure setback if no accessory setback is specified)
  • Ground-mounted systems: maximum height 25 feet
  • Ground-mounted systems within 300 ft of an abutting ground-floor residential use require a Type A landscape buffer (per Zoning Resolution § 3.03 Buffering and Screening)
  • All ground-mounted panels/equipment (except utility connection fencing/poles/wires) must be enclosed by a fence at least 6 ft high, with clearly visible voltage-hazard warning signs and wildlife-fencing style options
  • Community/shared ground-mounted generators serving up to 10 property owners require a Special Use Permit from Natrona County Planning
  • Electrical interconnection requires a county Electrical Permit — select 'Solar/PV Installation' as the Nature of Project
  • Decommissioning: any accessory solar generator no longer producing energy or abandoned must be physically removed (all panels, structures, equipment) within 150 days of discontinued operation

Required documents

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Fee schedule

Electrical Permit Fee — valuation-based (same table as building permits)Natrona County Permit Fees, Resolution No. 45-20 — solar interconnection is processed as an electrical permit under the same combined valuation-based schedule; no dedicated solar fee line exists.
$70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000

Review timeline

Plan reviewTypical estimate — confirm current times with the Unincorporated Natrona County building department
~5–15 business days

How long did your Solar PV Permit permit actually take in Unincorporated Natrona County?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Rough Electrical

    Conduit runs, wire sizing, disconnect placement before concealment

  2. 2

    Final

    Panel mounting/racking, interconnection point, and system energization verified

See the full Unincorporated Natrona County inspection guide — scheduling & re-inspection fees →

Tips

  • Rooftop residential solar is a permitted accessory use countywide — you do not need a zoning approval for a standard roof-mounted residential system, only the electrical permit.
  • Ground-mounted systems trigger more zoning requirements: 25 ft max height, accessory-structure setbacks, a 6 ft security fence with warning signage, and a landscape buffer if within 300 ft of a neighboring residential use.
  • Plan for decommissioning: an abandoned or non-producing ground-mounted system must be fully removed within 150 days per § 4.10.13(E).

Frequently asked questions

Unincorporated Natrona County requires a solar pv permit for: Zoning: Accessory solar generators are a permitted (by-right) accessory use in ALL zoning districts per Natrona Next Zoning Resolution § 4.10.13 — no special use / conditional use permit needed for a single-property system serving up to that property; Ground-mounted systems: must meet the applicable zoning district's minimum accessory-structure setback (or principal-structure setback if no accessory setback is specified); Ground-mounted systems: maximum height 25 feet; Ground-mounted systems within 300 ft of an abutting ground-floor residential use require a Type A landscape buffer (per Zoning Resolution § 3.03 Buffering and Screening); All ground-mounted panels/equipment (except utility connection fencing/poles/wires) must be enclosed by a fence at least 6 ft high, with clearly visible voltage-hazard warning signs and wildlife-fencing style options; Community/shared ground-mounted generators serving up to 10 property owners require a Special Use Permit from Natrona County Planning; Electrical interconnection requires a county Electrical Permit — select 'Solar/PV Installation' as the Nature of Project; Decommissioning: any accessory solar generator no longer producing energy or abandoned must be physically removed (all panels, structures, equipment) within 150 days of discontinued operation. If your project isn't listed, confirm with Natrona County Building Department at (307) 235-9435 before starting work.

In Unincorporated Natrona County, the published Electrical Permit Fee — valuation-based (same table as building permits) is: $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for a solar pv permit in Unincorporated Natrona County typically runs 5–15 business days. This is an estimate, not a published figure — confirm current review times with Natrona County Building Department at (307) 235-9435.

You'll need: Natrona County Electrical Permit Application (2025). Depending on your project, Unincorporated Natrona County may also ask for: Site Plan Application (2025). See the required-documents checklist on this page for details on each.

Unincorporated Natrona County requires 2 inspection(s) for a solar pv permit, in order: Rough Electrical, Final. Schedule each through Natrona County Building Department ((307) 235-9435).

Apply through Natrona County Building Department at 200 N. Center St, Room 205, Casper, WY 82601. Phone: (307) 235-9435, email: Contact via natronacounty-wy.gov (email obfuscated on site; call 307-235-9435). Office hours: Monday–Friday, 8:00 AM–5:00 PM. Official information: https://www.natronacounty-wy.gov/170/Building-Inspection.

No separate zoning/conditional use permit is required for accessory solar generators — Zoning Resolution § 4.10.13 lists 'Solar Generator, Accessory' as a Permitted (P) use in every zoning district. You still need the county's standard Electrical Permit for the interconnection work.

Yes. Per § 4.10.13(B), ground-mounted solar panels and equipment must meet the applicable zoning district's minimum accessory-structure setback (or principal setback if no accessory setback applies), cannot exceed 25 ft in height, and require a Type A landscape buffer if located within 300 ft of an abutting ground-floor residential use.

Sources & verification

Verified against official sources. Last reviewed 2026-07-01.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Natrona County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Unincorporated Natrona County

Residential Building Permit (New Construction)Residential Addition / Remodel PermitElectrical PermitPlumbing PermitMechanical / HVAC PermitRoofing Permit (Reroof)Accessory Dwelling Unit (ADU) PermitDemolition PermitCommercial Tenant Improvement PermitDeck PermitEV Charger / EVSE PermitSign PermitFire Alarm System PermitFire Sprinkler System PermitChange of Use / Zoning Certificate & Certificate of Occupancy

Solar PV Permit in other cities

Casper, WyomingCheyenne, WyomingEvanston, WyomingGillette, WyomingGreen River, WyomingJackson, WyomingLander, WyomingLaramie, Wyoming

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