Montana
No plug-in solar bill has been introduced in Montana.
- Size limit
- no plug-in solar law or bill
Checked October 14, 2026
State law · Montana
Is plug-in solar legal in Montana?
No — there is no plug-in solar bill in Montana as of October 14, 2026. The Bright Saver tracker shows that no plug-in solar legislation has been introduced. You can still use stand-alone options (portable power stations plus panels) and get rooftop quotes if you own a home.
- StatusNo bill
- Bill—
- Average rate, EIA13.95¢/kWh
- CheckedOct 14, 2026
No bill yet: none of the four steps has started
- Bill introducednot yet
- Passed the legislaturenot yet
- Signednot yet
- In effectnot yet
A typical year in Montana800 W kit · railing, facing south · near the state's population center
Service ZIP596xxMontana
671 kWhproduced in a typical year
$55saved per year
13.95¢/kWhAverage home rate, EIA
393 kWh used at home × 13.95¢ = $54.79; 278 kWh sent to the grid unpaid, 0 kWh lost to the inverter limit. At Montana's average rate (EIA).
Montana: No billNo plug-in solar bill has been introduced in Montana.
- Bill
- —
- Proposed
- —
Production by month, kWh
- Used at home
- Sent to the grid
Residential average, January to July 2026 (EIA Electric Power Monthly).
Open the calculatorWhat the law says now
As of October 14, 2026 the Bright Saver tracker reports "No plug-in solar legislation has been introduced in Montana as of the 2026 legislative session." That means the state has not adopted the plug-in solar bills tracked by Bright Saver.
The tracker notes three core goals commonly found in plug-in solar bills: defining a new class of small systems, exempting them from utility interconnection requirements and approvals, and requiring product safety certifications. Because Montana has no bill, those model provisions do not appear in state law.
Options without a bill
If you do not want to rely on the grid, a portable power station charged by panels is an option that does not require interconnection approvals. Manufacturer specs show several sizes: DELTA 3 Max Plus 2048Wh capacity | 3000W output, DELTA 3 Plus 1024Wh | 1800W, DELTA 3 Classic 1024Wh | 1800W, DELTA Pro 3 4000Wh | 4000W and TRAIL models (288Wh/300W and 192Wh/220W). EcoFlow also states the DELTA Pro 3 can accept large solar and AC charging input.
For grid-connected systems you can get rooftop quotes from installers if you own your home. To see how much a small kit might produce in Montana, use the calculator or the computed examples below.
- Calculator (typical year, 800 W kit, vertical south): 671 kWh produced; 393 kWh used at home and 278 kWh exported; home use worth $55 a year ($548 over 10 years); exports paid 0; years vary ~4%.
- Calculator (800 W, 30° tilt south): 1,011 kWh produced and saves $66 a year.
Questions
Does Montana have a plug-in solar law?
No. The Bright Saver tracker reports no plug-in solar bill has been introduced in Montana as of October 14, 2026, so the state has not enacted the plug-in solar laws tracked there.
How much will an 800 W kit produce in Montana?
The calculator gives 671 kWh a year for an 800 W kit mounted vertically facing south; tilted at 30° it gives 1,011 kWh a year. The vertical layout example uses 393 kWh at home and exports 278 kWh, with home use worth $55 a year at 13.95 cents per kWh.
Can I use a plug-in kit without permission?
State law does not address plug-in solar in Montana because no bill has been introduced. You should check your lease, HOA rules and any utility requirements before connecting a grid-tied device; the tracker shows safety certification is a common goal in proposed laws.
What if I want to avoid the grid entirely?
Portable power stations plus panels are a grid-independent option. Manufacturer specs list models from small TRAIL units to larger DELTA and DELTA Pro models with capacities from 192Wh up to 4000Wh and AC outputs up to 4000W.