Electrical Permit Guide for Wyoming 2026
Permit costs, processing times, NEC edition, licensing authority, and the rules that are actually enforced in Wyoming.
Quick Facts: Wyoming Electrical Permits
Typical Permit Cost
State-issued wiring permits are a flat $50 (Wyoming Department of Fire Prevention & Electrical Safety schedule); temporary-power permits are $40 for 90 days; re-inspection fees are $50 plus $0.20 per ampere of service rating. The state permit fee is waived when the customer requests and pays for an inspection. A 2.5% (or $1.00 minimum) processing fee applies to credit/debit transactions per Wyo. Stat. § 9-4-217(h), effective April 1, 2025. In home-rule jurisdictions (Casper, Cheyenne, Gillette, Sheridan, Teton County/Jackson) fees are valuation-based: Casper runs roughly $42–$170 to add circuits, $85–$340 for a panel upgrade, and $127–$510 for a whole-house rewire; Teton County permit fees are tied to the bid amount with a double-fee penalty if work starts before issuance.
Processing Time
State permits issued same-day to 1-2 business days through the Wyoming State Fire Marshal's ImageTrend portal once the $50 fee posts; inspections are scheduled directly with the assigned county-zone state electrical inspector. Home-rule cities turn around residential permits in 1-5 business days (Casper, Cheyenne) and Teton County's Jackson Hole Fire/EMS Electrical Division schedules inspections same-day if requested before 3:30 PM local time.
Online Portal Availability
Yes. The state Wyoming State Fire Marshal Public Portal (wyelectrician.imagetrendlicense.com) handles all electrical licenses and wiring permits in DFPES-direct jurisdictions (the vast majority of the state). Cheyenne uses an OpenGov portal at cheyennewy.portal.opengov.com. Casper uses the Citizen Self-Service (CSS) Portal through the Community Development Department. Teton County (Jackson) uses SmartGov at co-teton-wy.smartgovcommunity.com. Laramie County, Natrona County, Albany County, and most of the state's 23 counties do not run their own electrical inspection programs and route directly to DFPES.
Inspections
Typically 2-4 state inspections per residential job: a temporary-power inspection if needed, a rough/concealment inspection before drywall, a service inspection before utility energization, and a final inspection. Service-only swaps (100A-to-200A panel upgrade) often combine into 1-2 visits. Re-inspections triggered by failed work or no-shows bill at $50 plus $0.20 per ampere of service rating.
Wyoming Electrical Licensing
Wyoming Department of Fire Prevention and Electrical Safety (DFPES), Electrical Board, under the State Fire Marshal — 320 West 25th Street, 3rd Floor, Cheyenne, WY 82002 / 307-777-7288 / wsfm-licensing@wyo.gov
Wyoming licenses Master Electrician ($200 initial / $100 triennial renewal), Journeyman Electrician ($100 initial / $50 triennial renewal), Residential Wireman, Low-Voltage/Limited Technician ($100 initial / $50 renewal), Apprentice Electrician ($20 initial / $20 renewal), and the company-side Electrical Contractor ($400) and Low-Voltage/Limited Contractor ($200) credentials. Journeyman applicants need 4 years and 8,000 hours of documented experience under a licensed master plus an 80-question, 4-hour open-book exam ($105 exam fee, 70% pass). Master applicants need an additional 2 years (12,000 hours total) as a licensed journeyman plus a 100-question, 5-hour exam ($105 fee, 75% pass). Renewals are triennial: journeyman and technician April 1-July 1; master October 1-January 1; 16 hours of continuing education per 3-year cycle, at least 8 hours of which must be NEC-related. A 45-day grace period adds a $50 late fee. Wyoming has broad reciprocity for journeymen with Alaska, Arkansas, Colorado, Idaho, Iowa, Maine, Minnesota, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, and Utah; master reciprocity is narrower — Idaho, Iowa, South Dakota, and Utah only. Oregon and Utah require direct verification letters sent to wsfm-licensing@wyo.gov.
Electrical Code in Wyoming
Rules of the Wyoming Department of Fire Prevention and Electrical Safety, Chapter 1 — Electrical Safety — Current Edition
2023 NEC (NFPA 70-2023)
Wyoming adopted the 2023 NEC statewide effective July 1, 2023 under Chapter 1 of the DFPES Rules, with Wyoming-specific amendments addressing high-resistivity rocky soil grounding, agricultural-building wiring (NEC Article 547), and an amendment requiring AFCI protection to be added to a circuit when receptacles are replaced on a branch circuit that already requires AFCI protection — even if the existing wiring is not extended. The state also adopted the 2024 International Codes (Fire, Building, Fuel/Gas, Mechanical, Existing Building) on June 28, 2024, with new plan-review submissions required to comply from that date forward. Authority to adopt and enforce flows from Wyo. Stat. §§ 35-9-101 through 35-9-130 (Department of Fire Prevention and Electrical Safety; Electrical Wiring Safety provisions), with §§ 35-9-120 (permits, inspections, fees) and 35-9-123 (work to be performed by licensed electricians; exceptions) being the operative permit and homeowner-exemption sections.
When Do You Need an Electrical Permit in Wyoming?
Wyoming runs the most centralized electrical inspection program in the Mountain West. The Wyoming Department of Fire Prevention and Electrical Safety (DFPES) — uniquely housing both the State Fire Marshal and the State Electrical Board under one roof — issues wiring permits and dispatches state electrical inspectors to almost every county in Wyoming. Casper (Natrona County), Cheyenne (Laramie County), Gillette (Campbell County), Sheridan (Sheridan County), and Teton County (Jackson) are the primary home-rule jurisdictions that operate their own state-certified electrical inspection programs; everywhere else — including Laramie, Rock Springs, Cody, Riverton, and the bulk of the state's rural and small-town building stock — DFPES is the inspector of record. Wyo. Stat. § 35-9-120 requires a state wiring permit at a flat $50 fee before any installation, alteration, or remodel that would cause a public utility to connect, disconnect, or restore service. The homeowner exemption under § 35-9-123(a)(i) lets owner-occupants perform their own work, but the work must still meet the 2023 NEC and is subject to inspection.
Permit Required
- Any new construction or remodel where the work requires a public utility to connect, disconnect, or restore electrical power (Wyo. Stat. § 35-9-120 and DFPES Rules)
- New service entrances, panel changes, meter relocations, and ampacity upgrades (100A, 150A, 200A, 320A, 400A)
- New branch circuits, feeders, and rewiring including kitchen, bath, laundry, and addition wiring
- EV charger circuits and Level 2 EVSE (40A and 60A dedicated circuits)
- Solar PV interconnections, battery energy storage systems, and grid-tied wind systems
- Generator transfer switches, interlocks, and standby/portable generator interconnections
- Heat pump and electric water heater dedicated circuits
- Hot tub, pool, spa, and equipotential bonding wiring (NEC Article 680)
- Mobile home and manufactured-home service installations
- Commercial, industrial, oil & gas, and agricultural electrical work over the homeowner-exemption scope
Typically Exempt
- Like-for-like replacement of switches, receptacles, and luminaires on existing branch circuits where no new wiring is added
- Repair or replacement of cord-and-plug appliances on existing approved circuits
- Low-voltage doorbell, thermostat, and irrigation control wiring under 50V (verify with AHJ)
- Public utility company work on its own equipment up to and including the meter
- Owner-occupied work performed personally by the property owner, partner, or major stockholder of a family corporation when the property is not for immediate resale (Wyo. Stat. § 35-9-123(a) — applies to single- and two-family dwellings; the owner remains responsible for code compliance and the work is still subject to inspection)
- Work installations exempt under § 35-9-123(a)(ii) through (v) (utility, oil & gas operations, certain industrial maintenance) — these are exempt from the wiring permit fee unless performed by a subcontractor
Exempt from permit does not mean exempt from the code. Work still must comply with the edition in force at your address.
Wyoming-Specific Rules You Should Know
DFPES is one agency for fire AND electrical statewide
Wyoming is the only state in the Mountain West where the State Fire Marshal's office and the State Electrical Board sit inside a single agency — the Department of Fire Prevention and Electrical Safety, headquartered at 320 West 25th Street in Cheyenne. The same Cheyenne office (307-777-7288) handles fire-code plan reviews, electrical license issuance, and dispatch of the county-zone state electrical inspectors. Out-of-state contractors expecting separate state agencies for fire and electrical (the model in CO, UT, and MT) often misroute applications.
Statewide $50 flat permit fee
Wyo. Stat. § 35-9-120 and the DFPES rule schedule peg every state-issued residential or commercial wiring permit at a flat $50, with $40 for a 90-day temporary-power permit. Re-inspections are $50 plus $0.20 per ampere of service rating. The permit fee is waived entirely if the customer requests and pays for an electrical inspection. Outside of the home-rule cities (Casper, Cheyenne, Gillette, Sheridan, and Teton County), Wyoming has one of the lowest residential electrical-permit ceilings in the country.
Home-rule cities and Teton County run their own programs
Casper, Cheyenne, Gillette, Sheridan, and Teton County (Jackson) operate state-certified local electrical inspection programs and issue valuation-based permits through their own building departments. Cheyenne uses cheyennewy.portal.opengov.com; Casper uses CSS through Community Development; Teton County / Jackson Hole Fire/EMS uses SmartGov at co-teton-wy.smartgovcommunity.com with a hard 3:30 PM same-day inspection cutoff and a double-fee penalty if work starts before the permit issues. Every other Wyoming jurisdiction routes to DFPES.
Homeowner exemption is family-corporation-aware
Wyo. Stat. § 35-9-123(a) waives the licensed-electrician requirement when the property owner — or a partner or major stockholder of a family corporation that owns the property — personally installs the equipment, provided the property is not for immediate resale. The exemption is broader than most state homeowner carve-outs but narrows again the moment a homeowner contracts or subcontracts the work to an unlicensed person; the statute expressly bars use of the exemption to cover unlicensed third-party labor. The work must still comply with the 2023 NEC and pass DFPES inspection.
Net metering capped at 25 kW with retail-rate monthly netting and avoided-cost annual sweep
Wyoming's Net Metering Act (Wyo. Stat. §§ 37-16-101 through 37-16-104) requires investor-owned utilities (Rocky Mountain Power, Black Hills Energy), all electric cooperatives, and irrigation districts to offer net metering for solar, wind, biomass, and hydropower systems up to 25 kW. Excess kWh credits roll forward at the full retail rate month-to-month, then any unused credit at the start of each calendar year is bought out by the utility at its filed avoided-cost rate (a few cents per kWh). House Bill 183 (2025), which would have raised the non-residential cap to 200 kW, passed the House 56-6 but died one vote short in the Senate; the 25 kW cap remains the operative limit in 2026, with the bill's sponsor signaling a 2027 reintroduction. Rocky Mountain Power's Schedule 135 (P.S.C. Wyoming No. 19) and Black Hills Energy's WY interconnection tariff implement the statute.
Wyoming AFCI replacement amendment is more aggressive than base NEC
Under the Wyoming-specific 2023 NEC amendment in DFPES Rules Chapter 1, replacing receptacles on any branch circuit that requires AFCI protection forces the installer to add AFCI protection at the panel even if the existing wiring is not being extended or modified. This is broader than NEC 406.4(D)(4) and trips up out-of-state contractors who treat receptacle swaps as no-permit, no-AFCI device exchanges.
High-altitude rocky-soil grounding amendment
DFPES Rules Chapter 1 includes a Wyoming-specific amendment recognizing alternate grounding methods where soil resistivity is too high for standard 8-foot ground rods to achieve adequate resistance — common across granite-shield central Wyoming, the Bighorn and Wind River ranges, and most of Teton County. Inspectors routinely accept ground rings, plate electrodes, and concrete-encased Ufer electrodes (NEC 250.52) as compliant where two driven rods would otherwise be required.
Teton County is a different cost regime
Teton County / Jackson handles most Wyoming high-end second-home work — multi-million-dollar custom homes with battery-backed solar, geothermal, snowmelt, and 400A services. Permits are bid-amount-based rather than flat $50, inspections route through the Jackson Hole Fire/EMS Electrical Division (Chief Inspector Bill Spaulding, 307-733-4732), and the 3:30 PM same-day inspection cutoff and double-fee start-without-permit penalty are strictly enforced. Plan for line items 5-10x higher than DFPES-direct counties on the same scope of work.
Permit Cost Drivers in Wyoming
Typical residential fee ranges. Actual fees vary by city and current-year schedule. Always verify at application.
| Work Type | Typical Fee | What Drives Variance |
|---|---|---|
| State wiring permit (DFPES) | $50 flat | Statewide flat fee per Wyo. Stat. § 35-9-120 and DFPES schedule; waived when the customer requests and pays for an inspection. |
| Temporary-power permit | $40 for 90 days | Common during new construction site setup or major rebuilds; can be extended. |
| Re-inspection fee | $50 plus $0.20 per ampere of service | Triggered by failed inspection or inspector callback for unready work; statewide on the DFPES schedule. |
| Casper electrical permit (panel upgrade) | $85–$340 | City of Casper Building Inspection Division uses valuation-based fees via the CSS Portal; (307) 235-8254. |
| Teton County / Jackson permit | Bid-amount based, no flat schedule | Double-fee penalty if work starts before permit issuance. SmartGov portal; 307-733-4732. |
| Journeyman license (initial) | $100 initial + $105 exam | Triennial renewal $50 plus 16 CEU hours including 8 hours NEC-related. |
| Master license (initial) | $200 initial + $105 exam | Triennial renewal $100; 2-year journeyman experience prerequisite. |
| Electrical Contractor (company) | $400 initial / $400 renewal | Low-Voltage/Limited Contractor is $200; both renew through the ImageTrend portal. |
| Credit/debit processing fee (state portal) | 2.5% of total or $1.00 minimum | Effective April 1, 2025 per Wyo. Stat. § 9-4-217(h); applies to all state license and permit transactions. |
Wyoming Electrical Permit FAQs
Who issues electrical permits in Wyoming?
In most of the state, the Wyoming Department of Fire Prevention and Electrical Safety (DFPES) issues permits and dispatches the state electrical inspector for your county zone. Casper, Cheyenne, Gillette, Sheridan, and Teton County (Jackson) run their own state-certified local electrical inspection programs; everywhere else routes through the DFPES Wyoming State Fire Marshal Public Portal at wyelectrician.imagetrendlicense.com.
Which NEC edition does Wyoming enforce in 2026?
The 2023 NEC (NFPA 70-2023), adopted statewide effective July 1, 2023 under Chapter 1 of the DFPES Rules, with Wyoming-specific amendments around AFCI replacement, high-resistivity-soil grounding, and agricultural-building wiring (NEC Article 547). The 2024 International Codes (Fire, Building, Fuel/Gas, Mechanical, Existing Building) took effect June 28, 2024.
Can a Wyoming homeowner pull their own electrical permit?
Yes. Wyo. Stat. § 35-9-123(a)(i) waives the licensed-electrician requirement when the property owner — or a partner or major stockholder of a family corporation that owns the property — personally installs the equipment, provided the property is not for immediate resale. The work must still comply with the 2023 NEC, and the homeowner permit cannot be used as cover for hiring an unlicensed third party. DFPES enforces against this through stop-work orders.
What does a Wyoming electrical permit cost?
A flat $50 in DFPES-direct jurisdictions (the majority of the state), with a $40 temporary-power option for 90 days. Re-inspections run $50 plus $0.20 per ampere of service. The state permit fee is waived if you request and pay for an inspection. In home-rule cities (Casper, Cheyenne, Gillette, Sheridan) and Teton County, fees are valuation-based and run roughly $42–$510 for typical residential scopes. A 2.5% (or $1.00 minimum) processing fee applies to credit/debit transactions per Wyo. Stat. § 9-4-217(h).
How do I become a licensed electrician in Wyoming?
Register as an apprentice with DFPES ($20), document 4 years and 8,000 hours under a licensed master, then sit the Wyoming Journeyman exam (80 open-book questions, 4 hours, $105 fee, 70% pass). Pay the $100 initial license fee. After 2 additional years (12,000 hours total) as a journeyman, you're eligible for the Master exam (100 questions, 5 hours, 75% pass) and a $200 initial Master license. All licenses renew on a 3-year cycle with 16 hours of continuing education (8 hours NEC-related).
Does Wyoming offer reciprocity for out-of-state electricians?
Yes — broadly for journeymen, narrowly for masters. Journeyman trade-exam reciprocity covers Alaska, Arkansas, Colorado, Idaho, Iowa, Maine, Minnesota, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, and Utah. Master reciprocity is limited to Idaho, Iowa, South Dakota, and Utah. Oregon and Utah require direct verification letters from their licensing boards sent to wsfm-licensing@wyo.gov.
How does Wyoming net metering work for solar in 2026?
Wyo. Stat. §§ 37-16-101 through 37-16-104 require Rocky Mountain Power, Black Hills Energy, and electric cooperatives to offer net metering for systems up to 25 kW. Excess kWh credits roll forward at the full retail rate month to month, then unused credits at the start of each calendar year are bought out at the utility's filed avoided-cost rate. HB 183 (2025), which would have raised the non-residential cap to 200 kW, died one vote short in the Senate; the 25 kW cap remains the operative limit in 2026.
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Data verified April 2026. Fees, processing times, and code editions are subject to change. Always verify with your local building or electrical inspection department before starting work.
This guide is informational. Wyoming electrical permit rules vary by city and county within the state framework. Verify current requirements with your local building or electrical inspection department before starting work. Not legal or engineering advice.