Solar in Mililani Town, HI
With Hawaiian Electric's electricity at about 43.7¢ per kWh and 1,520 kWh of sun per kW, solar is worth it for a typical Mililani Town home today: about a 7.1-year payback.
- Payback, typical home
- 7.1 yrsHawaii: 6.7 yrs
- 25-year net
- $33,652after paying $10,050
- Sun
- 1,520kWh per kW per year
- Electricity
- 43.7¢143% above U.S. average
A typical Mililani Town home, by the numbers
| Utility | Hawaiian Electric |
|---|---|
| Electricity use | 468 kWh a month |
| Best-value system | 3.3 kW, about 8 panels, 5,017 kWh a year (89% of use) |
| Cost | $15,050, or $10,050 after state incentives |
| First-year savings | $1,402 |
| Payback | 7.1 years |
| Exported power | 13.5¢/kWh (Hawaiian Electric) |
Cash purchase, no federal credit, 3.2% yearly rate increases. Run it with your own numbers.
Homes in Mililani Town
- Owner-occupied homes
- 81%
- Single-family detached
- 65%
- Median home value
- $924k
- Median year built
- 1978
- Population
- 27,668
Census ACS 2020–2024.
Installers working in Mililani Town
Public installation records for Hawaii don't name installers, so we can't rank local companies here. Browse installers in Hawaii.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Mililani Town
Is solar worth it in Mililani Town, HI?
For a typical home in Mililani Town, solar is worth it at 2026 prices: a 3.3 kW system costs about $10,050 after state incentives, saves about $1,402 in year one and pays back in about 7.1 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Mililani Town?
About 1,520 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 2% less than the Hawaii average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Mililani Town?
Most homes in Mililani Town are served by Hawaiian Electric, at about 43.7¢ per kWh on average.
How much do solar panels cost in Mililani Town?
A fair cash price is around $4.00 per watt before incentives, so about $15,050 for a 3.3 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Waipahu 6.6 yrs
- Pearl City 6.9 yrs
- Ewa Gentry 6.7 yrs
- Honolulu 6.9 yrs
- Kaneohe 6.9 yrs
- Kailua CDP (Honolulu County) 6.9 yrs
- East Honolulu 7.1 yrs
- Kahului 6.4 yrs
- All of Hawaii
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.