Solar Thermal Cost in Honolulu, HI in 2026
Most Solar Thermal projects in Honolulu, HI cost between $6,000 and $11,000. The typical price is $8,000.
Solar thermal serves hot water rather than the whole electrical load, so systems are smaller.
Labour and materials in Honolulu run about 33% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Panel efficiency and inverter type
- Roof complexity and mounting hardware
- Main panel upgrade if the busbar cannot take the backfeed
- Battery storage, which is priced separately
Usually included
- Panels, inverters and racking
- Design, permitting and interconnection
- Installation and commissioning
Usually extra
- Battery storage
- Roof repair or replacement before install
- Utility interconnection fees in some territories
Unit prices in Honolulu, HI
| Quality tier | Cost per watt |
|---|---|
| Budget | $1.44 |
| Mid-range | $1.97 |
| High-end | $2.75 |