
Solar Panel Cost in Idaho
Updated 2026 guide to solar panel prices, savings, and payback period in Idaho.
Estimated Solar Savings
Solar Panel System Costs in Idaho
Below are estimated costs for different solar panel system sizes in Idaho, including the 30% federal solar tax credit.
| System Size | Cost Before Incentives | Federal Tax Credit (30%) | Net Cost | Est. Annual Production |
|---|---|---|---|---|
| 4 kW | $11,600 | -$3,480 | $8,120 | 6,862 kWh |
| 6 kWMost Popular | $17,400 | -$5,220 | $12,180 | 10,293 kWh |
| 8 kW | $23,200 | -$6,960 | $16,240 | 13,724 kWh |
| 10 kW | $29,000 | -$8,700 | $20,300 | 17,155 kWh |
| 12 kW | $34,800 | -$10,440 | $24,360 | 20,586 kWh |
What Affects Solar Panel Cost in Idaho?
The average cost of solar panels in Idaho is $290/watt before incentives. For a typical 6kW residential system, that means a total cost of about $17,400 before the federal tax credit.
After applying the 30% federal Investment Tax Credit (ITC), your net cost drops to approximately $12,180.Idaho homeowners typically see a payback period of 9 years and save an estimated $28,000 over 25 years.
Idaho solar costs have fallen approximately 38% over the past decade. Low electricity rates mean longer payback periods, but solar still provides long-term savings.
Factors that affect your cost:
- System size: Larger systems cost more but have a lower cost per watt
- Equipment quality: Premium panels and inverters cost more but offer better efficiency
- Roof complexity: Steep roofs, multiple levels, or shading can increase installation costs
- Local labor rates: Installation costs vary by region within Idaho
- Incentives: State and local programs can significantly reduce your out-of-pocket cost

Solar Incentives in Idaho
Federal Solar Investment Tax Credit
30% Federal Tax Credit (ITC)
Idaho homeowners can claim the 30% federal ITC to offset solar installation costs.
State & Local Incentives
Idaho Solar Tax Deduction
Tax CreditIdaho offers a state income tax deduction for residential solar energy system installations.
Net Metering
Idaho requires utilities to offer net metering for residential customers. Idaho Power and other utilities provide net metering at varying rates.
AvailableSRECs
Idaho does not have an SREC market or renewable portfolio standard with solar requirements.
Not AvailableGet Your Free Solar Quote
No obligation • Compare top installers

Ready to go solar?
Get free quotes from top installers in your area
Top Solar Companies in Idaho
Affordable Solar Roof & Air
Intermountain Wind and Solar
Solar Panel Cost FAQ - Idaho
The cost of solar panels in Idaho typically ranges from $2.50 to $3.50 per watt before incentives. For a standard 6 kW residential system, homeowners in Idaho can expect to pay between $15,000 and $21,000 before the federal tax credit. After applying the 30% federal Investment Tax Credit, the net cost drops to approximately $10,500-$14,700. Actual costs vary based on your specific roof, chosen equipment, and installer. We recommend getting at least three quotes from local Idaho solar installers to find the best price.
The average solar payback period in Idaho depends on local electricity rates, available incentives, and sun exposure. Most Idaho homeowners see a payback period between 6 and 10 years. After the payback period, you essentially enjoy free electricity for the remaining 15-20+ years of your system's life. Higher local electricity rates and additional state incentives can shorten the payback period significantly. A qualified Idaho solar installer can calculate your specific payback period based on your energy usage and roof characteristics.
Idaho homeowners who install solar panels typically save between $20,000 and $50,000 over 25 years, depending on system size, electricity rates, and available incentives. These savings come from reduced or eliminated electricity bills, net metering credits, and any applicable SREC income. As electricity rates in Idaho continue to rise (historically averaging 2-3% annually), your savings grow each year. The combination of the 30% federal tax credit and any Idaho-specific incentives helps maximize your return on investment.
The right solar system size for your Idaho home depends on your electricity consumption, roof space, and budget. The average Idaho home uses approximately 10,000-11,000 kWh per year, which typically requires a 6-8 kW solar system. To determine your ideal size, review your annual electricity usage on recent utility bills. Factors like Idaho's average peak sun hours, your roof orientation, and any shading will affect how many panels you need. A professional Idaho solar installer will use satellite imagery and your usage data to recommend the optimal system size.
Yes, solar is generally worth the investment for Idaho homeowners in 2025. With solar panel costs at historic lows, the 30% federal tax credit still available, and electricity rates continuing to rise, the financial case for solar in Idaho is strong. Most Idaho homeowners who go solar see positive returns within 6-10 years, followed by 15-20+ years of significant savings. Additionally, solar panels increase your home value, provide energy independence, and protect against future electricity rate increases. The best way to determine if solar is right for your Idaho home is to get a free, customized quote from a qualified local installer.
Solar Panel Costs by City in Idaho
Solar in Nearby States

Start Saving with Solar Today
Join thousands of homeowners who've switched to clean energy
Get Your Free Quote