In Alaska, a 7.9-kW system for an average home costs about $20,354 after incentives in 2026, saves about $1,849 in the first year and pays back in 9.7 years.
| Item | Amount |
|---|---|
| Solar, 7.92 kW × $2.57/W | $20,354 |
| Federal credit (0%) | $0 |
| Net cost | $20,354 |
| Scenario | Net cost | Year-1 savings | Payback | 25-yr net |
|---|---|---|---|---|
| State averages (above) | $20,354 | $1,849 | 9.7 yr | $44,535 |
| Rates rise 5.6%/yr (2020–25 pace) | $20,354 | $1,849 | 8.8 yr | $70,855 |
| Rates stay flat | $20,354 | $1,849 | 11 yr | $24,419 |
| Survey price $3.6/W (LBNL) | $28,512 | $1,849 | 12.9 yr | $36,377 |
| Add 13.5-kWh battery | $35,609 | $1,849 | 15.6 yr | $29,280 |
| Exports cut to 50% of retail | $14,700 | $966 | 13.1 yr | $18,229 |
Verdict: at average Alaska numbers, solar is a solid investment in 2026 — payback takes 9.7 years, leaving you $44,535 ahead after 25 years. The main reasons: electricity that costs more than in all but 7 states; weak sun (the lowest yield of 51). Pay cash if you can: Berkeley Lab found loan-financed systems priced about $1.50/W above cash installs in 2025, which can add years to the payback.
Net metering and exports in Alaska: Not verified for this page — check your utility's net metering or export-credit tariff before you sign. The calculator assumes 1:1 kWh net metering (the best case).
Battery: a 13.5-kWh battery at the Alaska average of $1,130/kWh adds $15,255 and saves almost nothing extra under 1:1 net metering — buy it for backup, not payback; payback becomes 15.6 years.
Lease or PPA instead? The owner can still claim the 30% 48E credit if construction began by July 4, 2026 or the system is in service by Dec 31, 2027 — ask whether that discount is in the monthly price.
The full method, material data and tips are on the main solar payback calculator page.