Solar Thermal Cost in 2026
Most Solar Thermal projects in the United States cost between $4,800 and $9,000. The typical price is $6,500.
Solar thermal serves hot water rather than the whole electrical load, so systems are smaller.
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 the United States
| Quality tier | Cost per watt |
|---|---|
| Budget | $1.21 |
| Mid-range | $1.65 |
| High-end | $2.31 |
Solar Thermal costs in major metros
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