Solar Panel Cost in Boise, ID
Estimated costs and savings for ZIP code 83704 — updated for 2026
Urgent tax credit deadlines
- Section 48E phase-out completes December 31, 2027 — the last date to begin construction; grandfathered 2026 starts have until Dec 31, 2030 to be placed in service (421 days left).
Gross Cost
$18,830
7kW system
Annual Savings
$1,100
$92/month
Payback Period
17.1 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 $2.69/W and utility rate of $0.12/kWh.
| System | Cost | Savings/yr | Payback |
|---|---|---|---|
| 4 kW | $11,403 | $628 | 18.2 yrs |
| 5 kW | $13,879 | $785 | 17.7 yrs |
| 6 kW | $16,354 | $943 | 17.3 yrs |
| 7 kW(typical) | $18,830 | $1,100 | 17.1 yrs |
| 8 kW | $21,306 | $1,257 | 16.9 yrs |
| 10 kW | $26,257 | $1,571 | 16.7 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
$0.12/kWh
Moderate rates — solar still provides solid returns
Cost Per Watt in ID
$2.69/W
Below national average — competitive market
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 $18,830 before any incentives. This works out to about $2.69 per watt installed. Smaller systems start around $10,760, while larger 10kW systems can cost up to $26,900.
How long is the solar payback period in Boise?
The average solar payback period in Boise, ID is approximately 17.1 years for a 7kW system. With estimated annual savings of $1,100, 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 $92 per month or $1,100 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $27,500, 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.
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