Solar Panel Cost in Hawaii (2026)
Installed solar in Hawaii runs about $3.40 per watt — roughly 32% above the national average of $2.58/W. With the federal residential tax credit (25D) gone as of 2026, payback here rests on a $0.41/kWh power price and 5.6 daily peak sun hours.
Worked example: a typical $150/month home in Hawaii
A $150/month electric bill in Hawaii works out to about 4,380 kWh a year. Sizing a cash-purchase system to cover 100% of that:
Last updated June 30, 2026
Hawaii solar numbers
- Installed price
- $3.40 / watt
- Electricity price
- $0.41 / kWh
- Peak sun hours
- 5.6 hrs/day
- State incentive
- 0%
- Net-metering value
- 50% of retail
$/W: industry pricing surveys · electricity: U.S. EIA, 12-month average through April 2026 · sun hours: NREL.
Local context: The nation's highest electricity prices make solar compelling even though full net metering ended years ago.
Hawaii credits exported power at about 50% of the retail rate (NEM 3.0-style), so a battery to store and self-use your generation usually improves the return here.
Estimate your own Hawaii system
Adjust the bill, ownership, and battery options below — it's pre-set to Hawaii's pricing and sun hours.
Monthly shape modeled with NREL PVWatts® v8 (NSRDB 2020 TMY) — updated July 18, 2026.
Electricity 41.1¢/kWh — U.S. EIA, 12-month average through April 2026.
Data: U.S. EIA · OpenEI URDB · Google Solar · NREL PVWatts · DSIRE · IRS · ENERGY STAR · industry surveys — see all sources