Solar Financing in Montana
Lease vs. Buy vs. PPA — Complete financing guide for MT homeowners
Urgent tax credit deadlines
- Section 30D EV credit (up to $7,500) — expires June 30, 2026 (12 days left).
- Section 48E solar ITC safe harbor — construction must start by July 4, 2026 (16 days left).
Going solar in Montana? With electricity rates averaging 13.5¢/kWh and moderate solar resources, choosing the right financing option can save you $18,375 or more over 25 years. This guide breaks down every option available to Montana homeowners.
Avg Rate
13.5¢
per kWh
Solar Resource
Moderate
MT
Typical System
7kW
residential
Payback
~11.1 yrs
estimated
Solar Incentives & Tax Credits in Montana
Montana homeowners can take advantage of the following solar incentive programs:
Federal Solar Investment Tax Credit
30% federal tax credit via Section 48E for qualifying projects (leases, PPAs, commercial) that begin construction before July 4, 2026. The residential ownership credit (25D) expired December 31, 2025.
30% of system cost
Universal System Benefits (USB) Programs
Montana utilities fund USB renewable energy and conservation programs that periodically offer residential solar rebates.
Varies by utility
Montana Department of Environmental Quality Loans
Low-interest energy improvement loans available for renewable energy installations.
Low-interest loans
Net Metering in Montana
Montana mandates net metering at the full retail rate for systems up to 50 kW under PSC rules.
Compare Financing Options in Montana
See how cash purchase, solar loan, lease, and PPA compare based on Montana's average rates:
Solar Financing Comparison for Montana
Based on 13.5¢/kWh electricity rate and a 7kW system
Cash Purchase
Pay upfront — maximum long-term savings
- Upfront Cost
- $14,700
- Monthly Savings
- $110/mo
- Tax Credit Eligible
- Yes
Solar Loan
$0 down — own the system over time
- Down Payment
- $0
- Monthly Payment
- $144/mo
- Net Monthly
- $-34/mo
- Tax Credit Eligible
- Yes
Solar Lease
$0 down — provider owns the system
- Down Payment
- $0
- Monthly Payment
- $91/mo
- Net Monthly
- $19/mo
- Tax Credit Eligible
- No
Power Purchase Agreement
$0 down — pay per kWh produced
- Down Payment
- $0
- Annual Savings
- $784/yr
- Tax Credit Eligible
- No
Estimates based on average Montana (MT) rates and system costs. For a personalized comparison, use our full financing calculator.
Lease vs. Buy vs. PPA in Montana
Buying (Cash or Loan)
Best for: Maximizing long-term savings and home value.
- You own the system and all electricity it generates
- Eligible for the 30% Federal Tax Credit (~$6,300 on a 7kW system)
- Increases home value by an average of 4.1%
- Highest 25-year savings: ~$18,375
- You handle maintenance (panels need little)
Solar Lease
Best for: Zero upfront cost with predictable payments.
- $0 or low upfront cost
- Fixed monthly payment (no surprise bills)
- Maintenance and repairs typically covered
- Not eligible for tax credits or incentives
- Lower 25-year savings (~$5,775)
- May complicate home sale (lease transfer)
Power Purchase Agreement (PPA)
Best for: Paying only for what you produce, $0 down.
- $0 upfront cost
- Pay a per-kWh rate (typically lower than utility)
- Provider owns and maintains the system
- Not eligible for tax credits
- Rate escalates 2-3% annually (read the contract)
- Lowest 25-year savings of the three options
Solar Financing FAQ — Montana
Is solar worth it in Montana?
Yes, solar is a worthwhile investment in Montana. With moderate electricity rates averaging 13.5¢/kWh and moderate solar resources, a typical 7kW system can offset most of your household electricity usage. The estimated payback period is 11-13 years, after which you enjoy more than a decade of largely free electricity. montana mandates net metering at the full retail rate for systems up to 50 kw under psc rules is the main policy factor to verify with your utility.
What solar incentives are available in Montana?
Montana residents can claim the 30% Federal Solar Investment Tax Credit (worth $6,300 on a typical 7kW system). The state also offers Universal System Benefits (USB) Programs, Montana Department of Environmental Quality Loans. Montana does not currently offer a state solar tax credit, property tax exemption, or sales tax exemption for solar.
Should I lease, buy, or get a PPA in Montana?
Buying your solar system (cash or loan) maximizes long-term savings and qualifies you for the 30% Federal Tax Credit. On a typical 7kW system in Montana, that's about $6,300 back. Buying yields roughly $18,375 in net savings over 25 years. Leasing or a PPA requires $0 down and includes maintenance, but you won't get tax credits and your 25-year savings will be much lower (around $5,775). If you can afford the upfront cost or qualify for a low-rate loan, buying is the clear winner in Montana.
How much does a solar system cost in Montana?
A typical 7kW residential solar system in Montana costs approximately $21,000 before incentives. After the 30% Federal Tax Credit (~$6,300), the net cost drops to about $14,700. Actual costs vary based on equipment quality, installer, roof complexity, and whether you add battery storage.
Does Montana have net metering?
Montana mandates net metering at the full retail rate for systems up to 50 kW under PSC rules.
What is the solar payback period in Montana?
The typical solar payback period in Montana is approximately 11-13 years. With a net system cost of about $14,700 after the federal tax credit and annual electricity savings of roughly $1,191-$1,455 (based on 13.5¢/kWh), most Montana homeowners see full payback within 13 years and enjoy 12+ years of largely free electricity thereafter.
Related Solar Tools
Estimates are based on Montana average rates, system costs, and the 30% Federal Solar Investment Tax Credit. Actual savings vary by installer, equipment, roof, and utility policy.