Are Solar Panels Worth It in Hawaii? (2026)

Yes — solar is clearly worth it in Hawaii. — a 6.0 kW rooftop system in Hawaii pays back in about 3.9 years and delivers $73,145 in net 20-year savings after install cost and the federal tax credit. Fast payback and large lifetime savings put this state in the top tier.

Payback3.9 yrs

Annual savings$4,539

Net install (after ITC)$17,640

20-yr net$73,145

Assumes 6 kW system at $4.20/watt (state avg), 5.7 peak sun hours/day in Hawaii, and 46.62¢/kWh electricity rate (April 2026).

The short answer

Rooftop solar in Hawaii is a strong financial call. Payback is quick, lifetime returns are large, and the federal ITC + local incentives compound.

The 4 things that actually determine "worth it"

Electricity rate. Hawaii: 46.62¢/kWh. National avg: 18.83¢. You’re 148% above average — solar looks strong here.
Sunshine. Hawaii: 5.7 peak sun hours/day. National avg: 4.5. Above average sun — production per kW is high.
Install cost in Hawaii. $4.20/watt (state avg). Above national $3.00/W — market is smaller / labor more expensive.
Incentive stack. Federal ITC 30% applies universally. 35% state tax credit up to $5,000 Net metering: Replaced by CSS (Customer Self-Supply) — no export credit Full incentive breakdown →

Where Hawaii ranks nationally

Across all 51 states, Hawaii ranks #1 of 51 by 20-year net solar savings (1 = best). The top states are dominated by combinations of high electricity rates and high sunshine (CA, HI, MA, NY, CT). The bottom are cheap-power / cloudy-sky states (WA, OR, ID, ND).

See the full national ranking.

Break-even analysis

Your solar system in Hawaii needs to save $17,640 in electricity to pay for itself. At $4,539/year savings, that’s 3.9 years. Panels are warrantied for 25 years and typically last 30+ — meaning 26.1+ years of free electricity after breakeven.

Common objections addressed

“What if I move before payback?”

Homes with paid-off solar typically sell for ~$15,000-$25,000 more than comparable homes without. If you owe money on the panels (loan), the sale is more complex. Cash or fully-paid-off systems recover most or all of the remaining "unused" value at sale.

“Won’t rates drop?”

U.S. residential electricity rates have risen ~4%/year over the past decade. Even if rates flatline, the payback above holds. If rates rise, your solar looks better in retrospect.

“What about hail / storms?”

Solar panels are rated for 1-inch hail at 50 mph. Damage claims are covered by homeowner’s insurance in almost all cases (verify with your carrier).