Solar Energy Permit in Unincorporated Fremont County, Wyoming

Unincorporated Fremont County requires a solar energy permit for: No county building permit applies to unincorporated Fremont County — the County has not adopted a general building code, consistent with its other published permit types; A Wind and Solar Energy Facility fee of $3,000 plus $300/MW installed capacity applies specifically to COMMERCIAL SCALE wind/solar projects per the County's FY 2026 Fee Schedule — this does not apply to small residential rooftop or accessory-scale solar; Per the Planning Department FAQ, ANY alternative energy installation or alteration (solar, residential wind, generator, etc.) — regardless of size or valuation — requires plan review by the Wyoming State Fire Marshal's Office; The ELECTRICAL interconnection portion is issued by the Wyoming State Fire Marshal's Office (Dept. of Fire Prevention & Electrical Safety) under the same statewide wiring-permit program documented in this database's electrical-permit entry for Fremont County, NOT by the County itself; Confirm whether a specific parcel falls within an incorporated city (e.g., Riverton, Lander) before assuming the county-level process applies — incorporated cities within Fremont County run separate permitting systems. If your project isn't listed, confirm with Fremont County Planning Department at (307) 332-1077 before starting work.

The County's own FY 2026 Fee Schedule publishes a solar fee only for COMMERCIAL SCALE wind/solar facilities ($3,000 plus $300/MW) — no fee line item exists for small residential rooftop or accessory-scale ground-mount solar, and the County has no general building permit program. The Wyoming State Fire Marshal's Office still requires plan review and issues the electrical interconnection permit regardless of project size.

Unincorporated Fremont County does not publish a plan-review timeline for this permit. Contact Fremont County Planning Department at (307) 332-1077 for current turnaround.

You'll need: WSFM Wiring Permit Application (online, eLicense portal). Depending on your project, Unincorporated Fremont County may also ask for: Commercial Scale Solar Energy Facility Application. See the required-documents checklist on this page for details on each.

Unincorporated Fremont County requires 1 inspection(s) for a solar energy permit, in order: Electrical (State WSFM, separate permit). Schedule each through Fremont County Planning Department ((307) 332-1077).

Apply through Fremont County Planning Department at 450 North 2nd Street, Lander, WY 82520. Phone: (307) 332-1077, email: support@fremontcountywy.gov. Office hours: Mon–Fri (contact department for current hours). Official information: https://fremontcountywy.gov/government/departments/planning_department/building_codes.php.

Unincorporated Fremont County, Wyoming has adopted: NO county-wide building code and NO county-specific building permit for private construction. Fremont County's own Planning Department page states verbatim: 'Fremont County does not have any County-wide Zoning or County specific Building Codes, except the following' (small wastewater/septic permits and floodplain zoning in mapped FEMA hazard areas near Lander, Riverton, Dubois, and Hudson) — https://fremontcountywy.gov/government/departments/planning_department/building_codes.php; Confirmed against the Wyoming Dept. of Fire Prevention & Electrical Safety 'LOCAL AND STATE JURISDICTIONS' chart (updated 7/7/2026 as of this check — the date label itself changed from a prior 5/11/2026, but the underlying Fremont County determination did not — embedded at wsfm.wyo.gov/electrical-safety): Fremont County's BLDG INSP/PR and ELEC INSP/PR columns are both still marked S/S (state) for the unincorporated county, meaning the county has NOT taken general building-code delegation under W.S. § 35-9-121 — the State of Wyoming, not Fremont County, has building jurisdiction over unincorporated private construction; Fremont County's own building-codes page RECOMMENDS (does not require) that residents follow the State of Wyoming's adopted codes for new construction: 2024 International Building Code, 2024 International Existing Building Code, 2024 International Mechanical Code, 2024 International Fire Code, 2024 International Fuel Gas Code, and the National Electrical Code (2023 edition was in effect through June 30, 2026; per wsfm.wyo.gov/electrical-safety, the 2026 NEC edition took effect statewide July 1, 2026) — these are recommendations for quality/insurability, not a locally enforced code, and the county issues no building permit and performs no building inspection against them; Fremont County explicitly states it does NOT issue Certificates of Occupancy; Commercial/public construction is NOT fully unregulated: per Wyoming Statute § 35-9-108, a State Fire Marshal plan review IS required for government/school buildings, buildings over 5,000 sq ft with public access, childcare centers (10+ children), multi-story buildings, places of assembly, fire-protection-system work, alternative energy installations (solar/wind/generator), aboveground flammable/combustible liquid storage tanks, Type I commercial kitchen hoods, spray finish applications, and RV/camping/mobile-home park site plans — contact the State Fire Marshal's Plan Review office (Jeff Schoen, (307) 673-1461, jeff.schoen@wyo.gov) for any of these commercial scopes; The Incorporated Cities within Fremont County (Riverton, Lander, Dubois, Hudson, Shoshoni, Pavillion, and South Pass City) each have their OWN separate zoning and building codes and issue their own permits — this LEAN page covers ONLY unincorporated (outside city-limits) Fremont County. See the separate City of Riverton page for Riverton's own building department.. Local amendments apply — see the Unincorporated Fremont County overview page for the full list.