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Is plug-in solar legal in Wyoming?
Bill stalled (likely refiled 2027) HB 146
- Introduced
- Passed one chamber
- Passed both chambers
- Signed
- In effect
Not yet. Wyoming considered a plug-in solar bill (HB 146) that did not pass in 2026; a new version is expected. Until then, utility interconnection rules apply.
Max system sizeNo capsmallest tier: <=25 kW
Electrician / permitPermit and inspectionutility rules apply
Tell the utility?Interconnection applicationNot retrieved (gap)
CertificationUL 1741 inverterrequired by every utility
What this means for you
✓ What you can do
- Apply for interconnection like any small generator (<=25 kW), Not retrieved (gap).
- Use portable panels with a power station, never connected to house wiring, with no permission at all.
- Install conventional rooftop or ground-mount solar through the standard interconnection process.
✕ Not yet / not allowed
- Plug a grid-tied kit into an outlet without an interconnection agreement; it can breach your service terms.
- Expect a permit or wiring exemption; none exists without a law.
- Count on HB 146 this year: Died in House Transportation, Highways & Military Affairs ~2/17/2026 for lack of a motion; Chair Landon Brown: 'I honestly don't think the law is needed'; deferred to 2027.
What the rules say
Wyoming's HB 146 failed in 2026; Rocky Mountain Power/Black Hills interconnection rules apply.
What happened in 2026. HB 146: Died in House Transportation, Highways & Military Affairs ~2/17/2026 for lack of a motion; Chair Landon Brown: 'I honestly don't think the law is needed'; deferred to 2027.
Before you plug in: Wyoming checklist
- The rule that applies is Wyoming Public Service Commission's interconnection process: W.S. 37-16-101 et seq. net metering.
- A plug-in kit falls in the smallest tier (<=25 kW). Not retrieved (gap).
- Permits: 2026 NEC (7/1/2026); State Fire Marshal electrical licensing; homeowner exemption.
- Only consider kits with a UL 1741-listed inverter (UL 3700 preferred); a non-listed inverter will not be approved anywhere.
- What exports are worth: Retail kWh netting, annual excess at avoided cost.
- If approval is slow or costly, a portable panel and power station (never connected to house wiring) needs no permission.
- Watch HB 146: Died in House Transportation, Highways & Military Affairs ~2/17/2026 for lack of a motion; Chair Landon Brown: 'I honestly don't think the law is needed'; deferred to 2027.
The rules in detail
Wyoming has no statute specific to plug-in solar (the only bill so far is HB 146). Average residential electricity price: 14.36¢ per kWh (EIA, July 2026).
- Sponsor: Rep. Liz Storer.
- Outlet / circuit: Bill: standard 120 V/15 A outlet.
- Utilities: Vote delayed after utility opposition (NPR).
Your utility's rules in Wyoming
No utility in Wyoming publishes a rule that specifically allows or bans outlet-connected generation, so the general interconnection agreement is what applies. Here is what the largest residential utilities say and require.
| Utility | Residential customers | Published position on plug-in kits |
|---|---|---|
| Rocky Mountain Power (PacifiCorp) | 118,130 | Opposed HB 146 (2/17/2026): attorney Nathan Nicholas for RMP: 'You start overheating wires, you start subjecting the house to electrical fires and other types of injuries and damage.'. source |
| Cheyenne Light, Fuel & Power (Black Hills) | 39,954 | Representative 'shared safety concerns' at HB 146 hearing. source |
| Wyoming co-ops (Lower Valley, Powder River, High Plains) | 51,000 | WREA's Shawn Taylor: concerns 'may not be insurmountable'; 'If our members want to do something like this, we want to work with them.'. source |
Interconnection terms for a sub-1.2 kW system
| Regulator | Wyoming Public Service Commission. |
|---|---|
| Governing rule | W.S. 37-16-101 et seq. net metering. |
| Smallest tier | <=25 kW. |
| Application fee | Not retrieved (gap). |
| Electrician / permit | 2026 NEC (7/1/2026); State Fire Marshal electrical licensing; homeowner exemption. |
| Export compensation | Retail kWh netting, annual excess at avoided cost. |
| Electrical code | 2026 NEC (eff. 7/1/2026). |
In practice
- IOU objection was household-wiring overload, answerable with breaker-masking safeguards.
- Co-op association open; co-ops serve a third of state.
Plug-in solar bills in Wyoming, 2025–2026
| Bill | Sponsor | Status | What it would do |
|---|---|---|---|
| HB 146 | Rep. Liz Storer (D-Jackson) | Died in House Transportation, Highways & Military Affairs ~2/17/2026 for lack of a motion; Chair Landon Brown: 'I honestly don't think the law is needed'; deferred to 2027. | Affordable Electricity Act of 2026; exempt small plug-in devices from inspections and utility interconnect approval. |
State incentives
- None.
Who is pushing for a law
- Powder River Basin Resource Council (Stephen Magnifico)
- Wyoming Outdoor Council
- Bright Saver
Savings preview: 800 W kit in Wyoming
Adjust for your setup →≈ $138/year
Frequently asked questions
Is plug-in solar legal in Wyoming?
Not yet. Wyoming considered a plug-in solar bill (HB 146) that did not pass in 2026; a new version is expected. Until then, utility interconnection rules apply.
Do I need a permit or electrician for plug-in solar in Wyoming?
Default. Check with your local building department before you plug in.
Do I have to tell my utility in Wyoming?
Default. Plugging in a grid-tied kit without following this can breach your service agreement.
What can an 800 W plug-in kit save in Wyoming?
Roughly 960 kWh and about $138 per year at Wyoming's average residential rate of 14.36¢/kWh, assuming a typical balcony or patio mount. See the calculator for your exact setup.