Solar Panel Cost in Idaho Falls, ID
Estimated costs and savings for ZIP code 83402 — 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
$1,126
$94/month
Payback Period
16.7 yrs
Break-even
Peak Sun Hours
4.2
hrs/day avg
Solar System Cost Breakdown — Idaho Falls, ID
Estimated costs and savings for different residential solar system sizes in ZIP 83402. 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 | $644 | 17.7 yrs |
| 5 kW | $13,879 | $805 | 17.2 yrs |
| 6 kW | $16,354 | $966 | 16.9 yrs |
| 7 kW(typical) | $18,830 | $1,126 | 16.7 yrs |
| 8 kW | $21,306 | $1,287 | 16.6 yrs |
| 10 kW | $26,257 | $1,609 | 16.3 yrs |
Solar Production in Idaho Falls, Idaho
Average Peak Sun Hours
4.2 hours/day
Moderate solar resource — still cost-effective
Est. Annual Production (7kW)
9,121 kWh
Based on 4.2 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 — Idaho Falls, ID
How much do solar panels cost in Idaho Falls, ID?
A typical 7kW solar system in Idaho Falls, ID (ZIP 83402) 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 Idaho Falls?
The average solar payback period in Idaho Falls, ID is approximately 16.7 years for a 7kW system. With estimated annual savings of $1,126, 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 83402?
Homeowners in Idaho Falls, ID (ZIP 83402) can save approximately $94 per month or $1,126 per year with a standard 7kW solar system. Over 25 years, total savings can exceed $28,150, depending on utility rate increases.
How many peak sun hours does Idaho Falls get?
Idaho Falls, ID receives an average of 4.2 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 Idaho Falls?
The average home in Idaho Falls, 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 9,121 kWh annually in ZIP 83402.
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