Years in business

> 2


Review score is above industry average of 3.96



NABCEP qualified installer


Solar panel cost calculator

Latest Critical Mass Solar reviews

Latest review

Kevin over 1 month

More than half of the solar salespeople we talked to don't actually know how the system works. The person who does is never there in person. Anytime you ask a question, you get a guess or they say they have to ask the project mgr. This is not the case with Freddy. As the owner of the company and his own solar system, he is knowledgable. There is no project mgr because he is the project mgr. Here are some stats... Our national grid bill is usually around $350 per month which is more than the cost of our solar loan. Our first bill after the install was $72 only have 19 days of solar. Our next month was $-44.07. If you are looking at leasing, you are looking at the wrong option. If you are looking at another company, you are looking at the wrong company. The company is Critical Mass Solar. Freddy, call me if you need help convincing a client.

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Critical Mass 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

$11,324 - $13,840

Average payback time

Annual power production

8,747 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.

0¢ kWh

If you don't get solar

42¢ kWh

Forecast average MA electric rates over the next 25 years

Installers description for their business

Critical Mass Solar is a Massachusetts-based company that provides experienced solar panel installation at competitive rates. From acquisition to installation and implementation, our goal is to support you, our customer, in achieving financial independence in regard to utility costs, while simultaneously promoting environmental sustainability. It’s in this that we empower our customers to take control of their energy utilization while fostering a cleaner carbon footprint, which makes for a better environment for our children and their children.

Brands sold



33 Leighton Street, Pepperell MA, 01463


(click to reveal) ..9852


Critical Mass Solar

Office locations

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33 Leighton Street, Pepperell MA, 01463

Service locations

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Accreditations and affiliations

Better Business Bureau UL Certification

Service Types

Residential solar - Grid tied

Small commercial solar - Grid tied

Residential solar - Hybrid solar systems

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