Alaska vs Idaho Solar Comparison
Idaho gets more sun (4.7 hrs/day) while Alaska has the faster payback (10.5 years).Alaska offers higher 20-year savings at $22,800.
Alaska
3.0 hrs
10.5yr payback
$22,800
20yr savings
Idaho
4.7 hrs
12.5yr payback
$22,400
20yr savings
Side-by-Side Comparison
| Metric | Alaska | Idaho |
|---|---|---|
| Peak Sun Hours | 3.0 hrs | 4.7 hrs |
| Cost per Watt | $3.20 | $3.00 |
| 6kW System Cost | $19,200 | $18,000 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | None | None |
| State Rebate | None | None |
| Net Metering | Full Net Metering | Full Net Metering |
| Electricity Rate | 24.21¢/kWh | 11.15¢/kWh |
| Payback Period | 10.5 years | 12.5 years |
| 20-Year Savings | $22,800 | $22,400 |
Verdict
Alaska is the better state for solar ROI with $22,800 in 20-year savings and a 10.5-year payback period. Idaho has more sun exposure at 4.7 hrs/day, making it ideal for maximum energy production. Both states qualify for the 30% federal solar tax credit.
Frequently Asked Questions
Is solar better in Alaska or Idaho?
Idaho gets more sun (4.7 peak hours/day vs 3). Alaska has a faster payback (10.5 years) and Alaska offers higher 20-year savings ($22,800).
How do solar costs compare between Alaska and Idaho?
A 6kW system costs $19,200 in Alaska vs $18,000 in Idaho before incentives. Both qualify for the 30% federal tax credit.
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Data verified March 2026 · Source: NREL, DSIRE, EIA