Solar Thermal Cost in District of Columbia in 2026
Most Solar Thermal projects in District of Columbia cost between $5,500 and $10,000. The typical price is $7,500.
Solar thermal serves hot water rather than the whole electrical load, so systems are smaller.
Labour and materials in District of Columbia run about 18% 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 District of Columbia
| Quality tier | Cost per watt |
|---|---|
| Budget | $1.34 |
| Mid-range | $1.82 |
| High-end | $2.55 |