Years in business

> 13


Review score is above industry average of 3.97



NABCEP qualified installer


Solar panel cost calculator

Latest Granite State Solar reviews

Latest review

LarryNH over 1 month

These folks did an excellent job on the install, in and out in two days and everything handled very professionally.<br />The system has been working for us for a couple of years now with no problems at all and is exceeding our expectations. The system was designed to match our average energy usage and it is doing exactly that. We enjoy our $12 monthly electric bill (that is the connection charge that Eversource charges us) and are actually running an energy credit with them as we are generating slightly more power than we are using.

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All Granite State Solar reviews

Granite State Solar prices

This installer does not publish their standard system prices on the net.

As such we have used average pricing from the installers service areas as a proxy for what this company would most likely charge for a solar system.

System size


Average cost per watt


Net cost of system

$15,648 - $19,126

Average payback time

Annual power production

12,084 kWh

Levelized cost of solar energy

Levelized cost per kWh is the cost of the solar system divided by the total number of kWh produced by a solar system over it’s lifetime.

6¢ kWh

If you don't get solar

29¢ kWh

Forecast average NH electric rates over the next 25 years

Installers description for their business

Granite State Solar is an award-winning solar panel installation company, in business since 2008.

We provide leading-edge products with innovative custom system designs that best meet your solar energy needs. We never engage in high-pressure sales tactics or play pricing games, meaning you’ll get a great deal right from the start.

All the work—from the initial site assessment to installation and maintenance beyond—is done by our certified technicians, electricians, and engineers, never subcontracted. We are honored to be voted the Best of Business for Solar for three years, including in 2020.

Our staff members at Granite State Solar look forward to the opportunity to create a custom design quote for your PV solar or high-efficiency HVAC project.

Brands sold



57 Ryan Road, Bow NH, 03304


(click to reveal) ..4318


Granite State Solar

Office locations

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57 Ryan Road, Bow NH, 03304

Accreditations and affiliations

Top 100 solar installers

Service Types

Residential solar - Grid tied

Small commercial solar - Grid tied

Residential solar - Hybrid solar systems

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