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Solar Panel Cost in Boise, ID

Estimated costs and savings for ZIP code 83704 — updated for 2026

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).
See the full deadline tracker

Gross Cost

$20,300

7kW system

Annual Savings

$1,603

$134/month

Payback Period

12.7 yrs

Break-even

Peak Sun Hours

4.1

hrs/day avg

Solar System Cost Breakdown — Boise, ID

Estimated costs and savings for different residential solar system sizes in ZIP 83704. Costs based on ID average of $2.90/W and utility rate of $0.18/kWh.

System Cost Savings/yr Payback
4 kW $11,600 $916 12.7 yrs
5 kW $14,500 $1,145 12.7 yrs
6 kW $17,400 $1,374 12.7 yrs
7 kW (typical) $20,300 $1,603 12.7 yrs
8 kW $23,200 $1,832 12.7 yrs
10 kW $29,000 $2,290 12.7 yrs

Solar Production in Boise, Idaho

Average Peak Sun Hours

4.1 hours/day

Moderate solar resource — still cost-effective

Est. Annual Production (7kW)

8,904 kWh

Based on 4.1 PSH × 7kW × 365 days × 85% efficiency

Average Utility Rate

$0.18/kWh

High utility rates make solar especially valuable

Cost Per Watt in ID

$2.90/W

Below national average — competitive market

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Solar Panel FAQ — Boise, ID

How much do solar panels cost in Boise, ID?
A typical 7kW solar system in Boise, ID (ZIP 83704) costs approximately $20,300 before any incentives. This works out to about $2.90 per watt installed. Smaller systems start around $11,600, while larger 10kW systems can cost up to $29,000.
How long is the solar payback period in Boise?
The average solar payback period in Boise, ID is approximately 12.7 years for a 7kW system. With estimated annual savings of $1,603, the system pays for itself and then generates free electricity for the remaining 15-20+ years of its lifespan.
How much can I save with solar panels in 83704?
Homeowners in Boise, ID (ZIP 83704) can save approximately $134 per month or $1,603 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $40,075, depending on utility rate increases.
How many peak sun hours does Boise get?
Boise, ID receives an average of 4.1 peak sun hours per day. This is near the national average, making solar a solid investment in this area.
What size solar system do I need for my home in Boise?
The average home in Boise, ID needs a 7kW solar system to offset their electricity usage. The exact size depends on your monthly electric bill, roof orientation, and available space. A 7kW system would produce approximately 8,904 kWh annually in ZIP 83704.

Solar Tools for Idaho

ROI Calculator

Exact payback analysis

System Sizer

Find your ideal kW

Incentive Finder

ID rebates & credits

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