Independent reference site. Not a government website and not affiliated with any legislature or utility.Laws checked October 14, 2026

State law · Wyoming

Is plug-in solar legal in Wyoming?

Wyoming has no plug-in solar law in force from HB 146: the bill did not pass in 2026. As checked October 14, 2026, its proposed exemptions are not available through this bill. That does not establish that every grid-connected kit is legal or illegal under other requirements.

Where the bill stands
  1. Bill introducedHB 146
  2. Passed the legislaturecarried to 2027
  3. Signednot yet
  4. In effectnot yet
Deferred to 2027

Wyoming

HB 146 was deferred to the 2027 session; there is no state plug-in solar law yet.

Bill
HB 146
Size limit in the bill
1,200 W (the bill does not say AC or DC)
Utility notice, in the bill
Would not be required
Certification in the bill
underwriters laboratories or an equivalent nationally recognized testing laboratory (whole system)

Checked October 14, 2026

A typical year in Wyoming800 W kit · railing, facing south · near the state's population center
Service ZIP826xxWyoming
877 kWhproduced in a typical year
$62saved per year
13.95¢/kWhAverage home rate, EIA

444 kWh used at home × 13.95¢ = $61.98; 432 kWh sent to the grid unpaid, 0 kWh lost to the inverter limit. At Wyoming's average rate (EIA).

Wyoming: Back in 2027HB 146 was deferred to the 2027 session; there is no state plug-in solar law yet.
Bill
HB 146
Proposed
1,200 W

Production by month, kWh

0255075100kWhJanFebMarAprMayJunJulAugSepOctNovDec
  • Used at home
  • Sent to the grid

Residential average, January to July 2026 (EIA Electric Power Monthly).

Open the calculator
Where sources differ

StatusOfficial legislature page shows the bill "died in committee" on 03/03/2026; BrightSaver states the bill was deferred to 2027.

What the law says now

HB 146 remains a failed proposal, not an enacted law. The Wyoming legislature lists its last action as “Died in Committee” on March 3, 2026. Bright Saver describes it as deferred to the 2027 session; that differs from the official action wording, and an expected return is not passage.

The proposal would define qualifying devices with “a maximum power output of not more than” 1,200 W per meter. The bill does not say whether this is AC or DC output. It also specifies connection through a standard 120 volt AC outlet and certification of the system by Underwriters Laboratories or an equivalent nationally recognized testing laboratory.

If passed, the proposal would exempt qualifying devices from interconnection agreements and prohibit utilities from requiring approval before installation or use. It would also require a feature preventing energization of the building or backfeeding into the utility system during an outage. These are proposed protections, not permissions you can rely on now.

Your options before buying

A solar-charged portable power station offers an option without a grid connection when used separately from your home's electrical system. EcoFlow says its DELTA Pro 3 supports solar charging. Homeowners can also seek rooftop solar quotes rather than wait for a plug-in solar bill.

Before buying a grid-connected kit, ask your utility what requirements apply, and check permission with your landlord or HOA where relevant. HB 146's proposed utility exemptions do not resolve those questions today. Check certification for the complete system, rather than assuming a component certification covers the kit.

For planning if a law passes, the calculator gives 877 kWh in a typical year for an 800 W panel array with an 800 W inverter limit, mounted vertically facing south near Wyoming's population center. With a 164 W home base load, 444 kWh is used at home, worth $62 a year at 13.95 cents/kWh, with no payment assumed for exports. Use the calculator to compare your location and mounting.

Questions

Is Wyoming's 1,200 W limit in force?

No—the 1,200 W limit belongs to HB 146, which did not pass. The bill does not specify whether that limit measures AC or DC output.

Can I install plug-in solar without utility approval?

HB 146 would have prohibited utilities from requiring prior approval for qualifying devices. Because it did not pass, ask your utility what requirements apply rather than relying on that proposed exemption.

Does Wyoming guarantee renters permission for balcony solar?

The proposed provisions described here do not establish a renter or HOA permission right. Check with your landlord or HOA before buying a system for your balcony.