Solar Panel ROI in Hawaii
· Source: NREL PVWatts
Is solar worth it in HI? Here's what the data says.
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25-Year ROI Timeline
With a 4.2-year payback, your system spends 20.8 years in profit after breaking even.
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Hawaii vs National Average
How We Calculated This
Our solar ROI calculations use data from the National Renewable Energy Laboratory (NREL) PVWatts API, which models solar energy production based on location-specific solar irradiance, weather patterns, and panel tilt angles. We assume a standard 6kW residential system with south-facing panels at optimal tilt.
Electricity rates are sourced from the U.S. Energy Information Administration (EIA). Annual savings are calculated by multiplying estimated production by the local electricity rate. The ROI score represents total 25-year savings divided by system cost.
These estimates do not include the federal 30% ITC tax credit, state incentives, SRECs, or utility rebates, which can significantly reduce the effective payback period.
Solar ROI by Zip Code in Hawaii
Explore solar data for specific zip codes in Hawaii. Click any zip code for a full local breakdown.
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Solar Outlook for Hawaii
Hawaii's 5.82 kWh/m²/day irradiance is 17.3% above the national average, and electricity rates of $0.437/kWh drive one of the fastest payback periods in the country at 4.2 years. Annual savings of $4,241 make solar an excellent investment here.
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