Residential Grid-Tie systems can start as low as $5,000 (installed) for a starter system, all the way to $50,000 or more.

$2.50 per watt. This includes all the components including panels, inverters, mountings and electrical accessories.

$1.00 per watt. This usually includes the physical installation of the system and connection to the grid.

Example: A 3 kW system is 3000 watts. So the components will cost $20,000 before rebates, and the installation will cost $6,000.
A 7kw or 7,000 watt solar system will cost $24,500 completely installed before the various tax credits.

$24,500 Total Cost to Install
- 7,350 30% Federal Tax Credit
- 12,250 50% State Tax Credit
= $4,900 total out of pocket

$24,500 Total Cost to Install
- 7,350 30% Federal Tax Credit
= $17,150 total out of pocket