How much do solar panels cost in Idaho?

In Idaho, solar panel installation averages about $2.56 per watt. For a typical $150 monthly electric bill, a 9.7 kW system (25 panels) costs approximately $25,600 before incentives, or $17,920 after the 30% federal tax credit.

Is solar worth it in Idaho?

Yes — with 5.22 peak sun hours per day and 12.7¢/kWh electricity rates, solar in Idaho typically pays for itself in 9.6 years. The rating is Moderate.

Solar Panel Cost & Savings in Idaho (2026)

Quick Idaho Solar Facts

5.22

Peak Sun Hours/Day

12.7¢

Electricity Rate

$2.56

Install Cost/Watt

9.6 yrs

Avg Payback

In Idaho, a typical 9.7 kW system (25 panels) costs approximately $17,920 after the 30% federal tax credit. With 5.22 peak sun hours per day and 12.7¢/kWh electricity rates, annual savings average $1,863 with a payback period of 9.6 years. Rating: Moderate. Source: NREL PVWatts v8 (PSH), US EIA July 2026 (rates), SEIA/EnergySage Q1 2026 (costs).

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How many solar panels do I need in Idaho?

For a typical home with a $150 monthly electric bill in Idaho, you need about 25 panels (10.0 kW system). Your exact number depends on your specific monthly usage and roof orientation.

What solar incentives are available in Idaho?

Every US homeowner qualifies for the 30% federal Investment Tax Credit (ITC) through 2032. Many states also offer additional incentives — check our main calculator's Incentives tab for Idaho-specific rebates, tax credits, and net metering policies.

Is Idaho a good state for solar?

Idaho has 5.22 peak sun hours per day (U.S. average: 4.98). With electricity at 12.7¢/kWh (U.S. average: 18.83¢/kWh), solar in Idaho typically pays for itself in 9.6 years. Overall rating: Moderate.