Solar installer

Granite State Solar

Installed solar on 115 homes since 2023 in New Hampshire. Installing since 2013. Latest install on record: July 2025.

Homes since 2023: 115
Median price: $2.89/W
Typical system: 8.9 kW
Leased or PPA: 0%

Price

Homes that bought their system from Granite State Solar paid a median $2.89/W installed, and the middle half paid $2.68/W–$3.10/W (52 systems since 2023, before incentives). That's $0.69 a watt below the New Hampshire median of $3.58/W.

Where it installs

Counties with homes it installed since 2023, busiest first.

Hillsborough County, NH · 32 Merrimack County, NH · 25 Rockingham County, NH · 19 Grafton County, NH · 10 Belknap County, NH · 9 Carroll County, NH · 7 Strafford County, NH · 5 Cheshire County, NH · 3 Sullivan County, NH · 3

By state

State	Homes	Median
New Hampshire	115	$2.89/W

Homes installed since 2023.

Installed prices and installers from public installation records: Lawrence Berkeley National Laboratory’s Tracking the Sun (systems installed through 2025) and state program files from California, New York, New Jersey, Connecticut, Illinois and Oregon, which run into 2026. Prices are in dollars per watt of panel capacity (DC), before rebates and tax credits, for homes that bought their system; leased systems and systems with batteries are left out.