Granite State Solar Logo

Granite State Solar

Is This Your Business?
star star star star star
error This company may not service all states.
See states serviced
LAST UPDATED: May 4th, 2023

Since 2008, Granite State Solar has been serving the resident of New Hampshire to provide solar power solutions. 

Based in Boscawen, New Hampshire, the company installs solar panels and related photovoltaic equipment on both roof mounts and ground mounts on homes, school buildings, and commercial buildings. 

Granite State aims to save customers money and provide a green way to power homes and businesses — without the high-pressure sales tactics that often accompany solar sales. 

Top Ranked Companies


The Good

  • Customized Solar
  • Installation Process
  • Equipment Brands
  • Solar Warranty 
  • Fixed-Rate Financing 
  • Local Expertise 

Customized Solar

A solar energy system shouldn't be a one-size-fits-all solution. Granite State's crew evaluates your specific needs and tailors what type of system will suit you best based on your home size, energy usage, and geographic location. 

Within your proposal, you’ll be shown the full system cost, production, warranty coverage,  and government incentives.

Installation Process

The evaluation, design, and installation steps are carefully executed according to what is best for your individual situation, so you can be confident you will maximize your solar energy system's potential rather than getting a cookie-cutter version. 

In addition, a Granite State Solar professional will take the time necessary to complete every step in the process, ensuring that everything is done correctly and thoroughly. You won't have to worry about someone cutting corners or taking shortcuts in the conception, design, or installation phase of the project.

Granite State Solar is committed to providing services with experienced, skilled professionals. You can be sure an expert in the solar energy field will be handling your solar energy system.

Equipment Brands

Granite State Solar doesn't skimp on the materials and products it uses. Every piece of the system is carefully crafted at the highest possible level of quality. The solar panels, inverters, mounting systems, and junction boxes are from exclusively state-of-the-art, cutting-edge brands. 

The company’s leading equipment brands include the following:

  • Qcells
  • CanadianSolar
  • REC
  • Tesla Powerwall 
  • Enphase
  • SolarEdge

Solar Warranty

Solar installation through Granite State Solar includes a workmanship warranty of 12 years. That means that certain aspects of the solar installation, typically including roof mounting work, is guaranteed for 12 years at the company’s expense if there are problems. 

All of the company’s solar panels come with a 25-year manufacturer’s warranty. 

Fixed-Rate Financing

With Granite State Solar’s lending partner, the company can offer fixed-rate solar financing for up to 12 years. This option is for qualified customers only.  

Local Expertise

While there can be benefits to working with a nationwide solar company, there are benefits to working with a smaller, localized company like Granite State Solar. 

Years of experience working with New Hampshire residents and municipalities can benefit new customers. 

As a small company, Granite State Solar claims it has low overhead costs and can therefore pass savings along to customers. 

And since the business covers its own design, sales, installation, system monitoring, and customer service, you won’t have to worry about dealing with multiple points of contact. Granite State Solar will even coordinate with your utility company and all state and city municipalities for permitting on your behalf. 


The Bad

  • No Solar Lease Option 
  • Needs System Monitoring Details
  • Needs Customer Reviews 

No Solar Lease Option

There are certainly pros and cons to either purchasing or leasing a solar power system, but with Granite State, you'll only get one option.

If you want Granite State to provide your solar power, you’ll need to be prepared to purchase the system, because there are no lease or PPA (power purchase agreement) options. This means any repairs or maintenance needed on the system will be your responsibility. 

That being said, a solar purchase will benefit you more in terms of investing in energy that you now own and potentially adding value to your home. 

Needs System Monitoring Details

Granite State Solar doesn’t describe what if any online monitoring is included with a solar panel installation. 

Needs Customer Reviews

While there are a handful of reviews on this page, we need more verified reviews from past and current customers to accurately compare Granite State Solar to competing companies in terms of customer satisfaction. 

If Granite State Solar has done a solar project for you, please consider leaving a review below. 


The Bottom Line

Granite State Solar excels in local expertise, workmanship warranty, and equipment brands. If you are not in a position to buy your system, or if you simply don't prefer to make the purchase, you’ll need to choose a different company offering leasing or PPA options. 

Overall, Granite State Solar seems like a good solar company for New Hampshire residents to consider. However, we need more reviews to be able to confidently recommend this company. 

View Best Solar Companies

Was this content helpful?
thumb_up Yes thumb_down No

Star Rating


star star star star star

2 Reviews

Review Breakdown

5 grade


4 grade


3 grade


2 grade


1 grade


Sentiment Criteria


star_border star_border star_border star_border star_border


star_border star_border star_border star_border star_border


star_border star_border star_border star_border star_border


star_border star_border star_border star_border star_border

Filter by:


Sort by:

star star star star star

Fred Telschow Orlando, FL

Love these guys. No pressure, to the point. They came to the table with answers to all of my questions addressed any of my concerns and delivered what I asked for. It's companies such as Granite State Solar that make Solar Successful for everyone. BTW they do have online remote monitoring of the system and with current financing out of pocket cost is $0.00 10/10

6 years ago

star star star star star

Justin New York, NY

BestCompany can rate these guys 1.7/10 all they want, but if you're looking to outright buy your solar panels, look no further than GSS. I had my panels installed through them last year and couldn't be happier. Erik and his team were fantastic; they were very professional and helpful through the whole process.

6 years ago