Montana

Unclear

Current Status

Last verified: March 2026

What This Means for You

What You Can Do

No specific plug-in solar law. Traditional rooftop solar available. NorthWestern Energy offers net metering.

Current Limitations

Utilities require interconnection agreements for grid-tied systems.

Available Rebates & Incentives

Montana offers a personal income tax deduction for residential solar installations (up to $500/year). Net metering available through NorthWestern Energy. The federal 30% ITC (Section 25D) expired December 31, 2025.

Program Links

DSIRE — Montana Solar IncentivesFull list of Montana state and utility solar incentive programs, including the income tax deduction.

What "Unclear" Means for You

Montana has no explicit law permitting or prohibiting plug-in solar devices. No legislation has been introduced yet. Plug-in solar occupies a regulatory gray area.

What you can do right now:

1.Check your lease or HOA rules for any restrictions on balcony or patio equipment.

2.Use our Readiness Checker to see if your space qualifies for plug-in solar.

3.Write your landlord using our Landlord Letter Generator to request permission.

4.Contact your state representative to advocate for plug-in solar legislation.

5.Subscribe to alerts above to get notified when the law changes.

Take the Readiness Quiz Generate Landlord Letter

Montana Solar Data

Avg. Electricity Rate12.1¢/kWh

TOU Peak Spread

3¢/kWh

Est. Annual Savings~$141/yr

Last UpdatedMarch 2026

A 3¢/kWh TOU spread offers modest peak-shifting value. Battery storage adds some savings here, but the primary benefit is backup power during outages.

Calculate MT Savings

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This information is for educational purposes only. Laws change frequently. Consult a local attorney for legal advice specific to your situation.