How much do solar panels cost in Hawaii?

In Hawaii, solar panel installation averages about $2.7 per watt. For a typical $150 monthly electric bill, a 2.4 kW system (6 panels) costs approximately $6,480 before incentives, or $4,536 after the 30% federal tax credit.

Is solar worth it in Hawaii?

Yes — with 5.82 peak sun hours per day and 46.6¢/kWh electricity rates, solar in Hawaii typically pays for itself in 2.5 years. The rating is Excellent.

Solar Panel Cost & Savings in Hawaii (2026)

Quick Hawaii Solar Facts

5.82

Peak Sun Hours/Day

46.6¢

Electricity Rate

$2.7

Install Cost/Watt

2.5 yrs

Avg Payback

In Hawaii, a typical 2.4 kW system (6 panels) costs approximately $4,536 after the 30% federal tax credit. With 5.82 peak sun hours per day and 46.6¢/kWh electricity rates, annual savings average $1,830 with a payback period of 2.5 years. Rating: Excellent. Source: NREL PVWatts v8 (PSH), US EIA July 2026 (rates), SEIA/EnergySage Q1 2026 (costs).

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How many solar panels do I need in Hawaii?

For a typical home with a $150 monthly electric bill in Hawaii, you need about 6 panels (2.4 kW system). Your exact number depends on your specific monthly usage and roof orientation.

What solar incentives are available in Hawaii?

Every US homeowner qualifies for the 30% federal Investment Tax Credit (ITC) through 2032. Many states also offer additional incentives — check our main calculator's Incentives tab for Hawaii-specific rebates, tax credits, and net metering policies.

Is Hawaii a good state for solar?

Hawaii has 5.82 peak sun hours per day (U.S. average: 4.98). With electricity at 46.6¢/kWh (U.S. average: 18.83¢/kWh), solar in Hawaii typically pays for itself in 2.5 years. Overall rating: Excellent.