⚠️ The federal clean-energy tax credits were rolled back in 2026 (solar/battery credits ended Dec 31, 2025; the EV-charger credit June 30, 2026). State & utility rebates are now the main savings.
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Home Battery Cost in Hawaii

Prices, rebates, backup hours, and bill savings for home batteries across Hawaii.

$16,000
Avg Installed Cost
5 hrs/yr
Avg Outages
$0.15/kWh
Time-of-Use Spread
Up to $850
State Rebate

A Typical 13.5 kWh Battery in Hawaii

Backup, cost, and time-of-use bill savings

Installed Cost
$16,000
State Rebate
-$850
Net Cost
$15,150
Backup (essentials)
15 hrs
Avg Outages
5 hrs/yr
Bill Savings/yr
$599
Bill-Savings Payback
25.3 yrs
15-Year Savings
-$4,015

Hawaii Battery Rebates

Federal 25D Credit (Expired Dec 31, 2025)

The 30% federal Residential Clean Energy Credit covered standalone home batteries through December 31, 2025. Batteries installed in 2026 no longer qualify.

Up to $850

Hawaii State & Utility Programs

Hawaii's Battery Bonus pays ~$850/kW for adding storage plus grid-export revenue — and the nation's highest rates make arbitrage valuable. View full rebate detail →

Battery Backup & Savings by City in Hawaii

City Bill Savings/yr Outage Hrs/yr Population Utility
Honolulu$5874 hrs347,397Hawaiian Electric
East Honolulu$5314 hrs49,914Hawaiian Electric
Pearl City$5996 hrs47,698Hawaiian Electric
Hilo$6796 hrs44,186Hawaii Electric Light
Kailua$6154 hrs38,635Hawaiian Electric
Waipahu$6516 hrs38,216Hawaiian Electric
Kaneohe$6114 hrs34,597Hawaiian Electric
Mililani$5154 hrs27,629Hawaiian Electric
Kahului$5235 hrs26,337Maui Electric
Ewa Beach$5194 hrs24,689Hawaiian Electric

Home Battery Savings Calculator

Instant estimate — no email required

A typical home battery (e.g. a Tesla Powerwall) is ~13.5 kWh.

Quick Facts: Hawaii

  • 🔌 Avg outages: 5 hrs/yr
  • ⚡ Electricity: $0.280/kWh
  • 📊 Peak/off-peak gap: $0.15/kWh
  • 🏭 Top utility: Hawaiian Electric
View all Hawaii rebates →