Is Solar Worth It in Hawaii?
Yes — Hawaii has among the best solar economics in the U.S.
Very high electricity rates and strong sun make payback often 4–6 years. Most homeowners install solar; net metering and battery pairing are common.
Average Cost of Solar in Hawaii (2026)
The total cost of a residential solar system depends on system size, roof type, and installer pricing.
Typical 6–8 kW system:
- Average cost before incentives: $17,000 – $25,000
- Federal tax credit (30%): -$5,100 – $7,500
- Average net cost after federal credit: $11,900 – $17,500
The federal 30% Residential Clean Energy Credit is administered through the Internal Revenue Service.
Typical systems are 5–8 kW; storage is often added.
Solar Incentives in Hawaii
1. Federal Solar Tax Credit (30%)
30% of installation costs deductible from federal taxes.
2. Net Metering
Hawaii has net metering; terms vary by utility (HECO, etc.). Some areas have grid constraints.
3. State & Utility
Check DSIRE for current state and utility incentives.
Electricity Rates in Hawaii
Hawaii has the highest residential electricity rates in the nation.
A typical Hawaii homeowner spends $2,400–$4,000+ per year on electricity.
Solar can offset most or all of this cost.
Payback Period in Hawaii
Most homeowners see:
- Payback period: 4–6 years
- 25-year savings: $50,000–$100,000+
Savings depend on roof orientation, local utility rates, system size, and financing method.
Best Cities for Solar in Hawaii
Solar performs well statewide, but adoption is strongest in:
- Honolulu
- Pearl City
- Hilo
- Kailua
Suburban homes with south-facing roofs tend to achieve the highest ROI.
Is Solar Worth It in Hawaii? (Summary)
Solar makes the most sense if:
- You plan to stay 5+ years
- Your roof gets good sun
- You qualify for the federal tax credit
Solar is one of the strongest investments for Hawaii homeowners.
How to Calculate Your Hawaii Solar Savings
Every home is different.
To get a personalized estimate, use the calculator on this page: enter your ZIP, monthly bill, and optional system size to see projected savings and payback.