Battery Storage Cost in Hawaii
Home battery prices, incentives, and solar+storage savings for Hawaii homeowners in 2026.
Hawaii Battery Storage Overview
The average cost of home battery storage in Hawaii is $1171 per kWh of storage capacity. A typical 10 kWh system costs approximately $11,710 before incentives, or $8,197 after the 30% federal Investment Tax Credit (ITC).
With 5.5 average peak sun hours daily, Hawaii homeowners with solar-plus-storage systems can achieve 80-95% energy independence from the grid. A properly sized battery system ensures excess solar energy is stored for evening and nighttime use, dramatically reducing reliance on utility power.
Hawaii Battery Incentive
Battery storage is virtually required for new solar installations in Hawaii due to grid export limitations. Hawaiian Electric offers grid services programs that compensate battery owners for supporting grid stability.
Popular Battery Systems in Hawaii
| Battery System | Capacity | Power | Installed Cost | Warranty |
|---|---|---|---|---|
| Generac PWRcell | 18 kWh | 4.5 kW | $12,000 - $20,000 | 10 years |
| Tesla Powerwall 3 | 13.5 kWh | 11.5 kW | $12,000 - $14,500 | 10 years |
| Enphase IQ Battery 5P | 5 kWh | 3.84 kW | $6,000 - $8,000 | 15 years |
| Franklin WholHome | 13.6 kWh | 5 kW | $13,000 - $16,000 | 12 years |
Solar + Battery Storage in Hawaii
Solar Only
- Export excess to grid during the day
- Buy power from grid at night
- No backup during outages
- Savings depend on net metering rates
Solar + Battery
- Store excess solar for nighttime use
- Additional 23% savings vs solar alone
- 10+ hours backup power
- Hawaii has high time-of-use rate differentials, making battery storage highly valuable for peak shaving. Homeowners can save $50-$150/month by charging batteries during off-peak hours and discharging during expensive peak periods.
Battery Storage FAQ - Hawaii
The average cost of home battery storage in Hawaii is $1171 per kWh. A typical 10 kWh system costs $11,710 before incentives, or $8,197 after the 30% federal tax credit. Hawaii also offers additional state incentives.
Popular battery systems in Hawaii include Generac PWRcell, Tesla Powerwall 3, Enphase IQ Battery 5P, Franklin WholHome. The best choice depends on your backup needs, budget, and whether you have existing solar panels. The Tesla Powerwall 3 is the most popular choice nationally due to its high power output and competitive pricing.
Yes, Hawaii offers battery storage incentives: Battery storage is virtually required for new solar installations in Hawaii due to grid export limitations. Hawaiian Electric offers grid services programs that compensate battery owners for supporting grid stability. In addition, the 30% federal ITC applies to all battery installations with 3+ kWh capacity.
A typical home battery in Hawaii can provide 10+ hours of backup power for essential loads like lights, refrigerator, WiFi, and phone charging. For whole-home backup during extended outages, you may need multiple batteries or a larger system like the Generac PWRcell.
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