Solar That Works for Your Home.

From rooftop and ground-mounted solar to battery storage, we design solutions around your home, energy usage, and long-term goals.

We Inform. You Decide.

Residential Solar Solutions

Rooftop solar installation on a New England home

Rooftop Solar

Custom solar installations designed to make the most of your home's available roof space.

Ground-mounted solar array at Upswing Farm, Pepperell MA

Ground-Mounted Solar

Flexible solar solutions for properties with suitable land, offering more options for system placement and orientation.

Solar battery storage system for home backup power

Battery Storage & Backup Power

Store solar energy for later use and maintain power to selected circuits during outages with appropriately configured battery systems.

Solar panel maintenance and repair service

Maintenance, Repair & Removal

We provide maintenance, repair, and removal/reinstallation services — including on systems originally installed by other contractors, subject to individual project evaluation.

Why Choose Critical Mass Solar?

Honest Guidance

Straightforward advice, realistic expectations, and no high-pressure sales tactics.

Experienced Professionals

Knowledgeable installation and project coordination, supported by experienced licensed professionals.

Personalized Service

Family-owned and hands-on, from your initial assessment through system activation.

Understand Your Solar Investment

We'll help you evaluate installation costs, potential electricity savings, financing options, and applicable incentives so you can decide what makes sense for your home.

How It Works

01

Free Assessment

We visit your property, review your energy usage, and evaluate your site — no cost, no obligation.

02

Custom Proposal

We design a system sized for your home with clear projections and financing options.

03

Permitting & Installation

We handle all permits, utility interconnection, and installation — clean and on schedule.

04

Monitoring & Support

After your system goes live, we help you understand your production data and answer any questions.

Let's See if Solar Makes Sense for Your Home.

Tell us a little about your property and energy needs. We'll help you explore your options.