Business Details
11 Years
experience
Your Trusted Solar Panel Services in Chelmsford, MA
DeFreitas Enterprises offers comprehensive turnkey solar installations for residential and commercial clients. Established in 2015, we specialize in engineering, procurement, and construction of photovoltaic systems ranging from small-scale installations to large-scale projects. Our team provides full-service support including design, permitting, utility applications, and long-term system monitoring. We also offer custom construction services for pergolas, decks, and ground-mounted solar systems. Our offgrid division integrates battery storage and generators from industry leaders like Generac and Enphase Energy to create self-sufficient power solutions.With over 1,000 kW of installed capacity across Massachusetts, New Hampshire, and Rhode Island, we combine technical expertise with personalized service to help clients achieve energy independence. Our engineers and installers bring extensive experience in renewable energy systems, ensuring each project meets the highest standards of quality and performance.
Services
Solar Installations
Construction Services
Offgrid Energy Storage
Energy Storage Solutions
Generator Installations
Details
- Year established: 2015
Highlights and features
- We have over 8 years of experience in solar energy systems since 2015
- We offer complete turnkey solar solutions from design to installation
- Our team includes certified mechanical and chemical engineers
- We provide custom construction services with solar integration options
- We partner with industry leaders Generac and Enphase Energy
Services
Solar Installations
We design and install complete photovoltaic systems for residential and commercial properties. Our turnkey solutions include system design, permitting, equipment procurement, and professional installation. With experience ranging from small 12-panel installations to large 3,000-panel systems, we provide customized solar solutions that maximize energy production and cost savings while meeting local regulations and utility requirements.
Construction Services
Our construction team builds custom outdoor structures including pergolas, decks, and ground-mounted solar installations. We specialize in integrating solar technology into functional designs, offering options with translucent bifacial solar panels that provide both shade and energy generation. All projects are custom-built to meet specific property requirements while maintaining aesthetic appeal and structural integrity.
Offgrid Energy Storage
We create complete offgrid power solutions combining solar panels, battery storage, and backup generators. Our systems enable homes and businesses to operate independently from the electrical grid using renewable energy sources. We work with industry-leading components from Generac and Enphase Energy to design reliable systems that maintain power during outages and in remote locations without grid access.
Energy Storage Solutions
We install advanced battery storage systems that work with solar panels to store excess energy for later use. Our solutions from Generac and Enphase Energy provide backup power during outages and enable greater energy independence. Systems can be configured for partial home backup or complete whole-home energy storage, with options to integrate standby generators for extended power needs.
Generator Installations
We install and integrate standby generators with solar and battery systems to create comprehensive power solutions. Our generator installations work with both Generac and Enphase Energy systems to provide reliable backup power during extended cloudy periods or high energy demand situations. We ensure proper system sizing and compatibility to create seamless transitions between solar, battery, and generator power sources.
People
Alexander DeFreitas
President & Chief Engineer
Alexander DeFreitas, a lifelong Chelmsford resident, founded DeFreitas Enterprises after earning his Mechanical Engineering degree from UMass Lowell. With extensive solar industry experience, he leads engineering and project development while ensuring technical excellence across all installations.
David Shanahan
Sales Manager
David Shanahan, also from Chelmsford, joined the company in 2019. After transitioning to installation work, he brings hands-on experience to sales. A UMass Amherst graduate, he previously worked as a home energy auditor and combines technical knowledge with customer service expertise.
Kyler Gallant
Head of Research
Kyler Gallant, a Chelmsford native, leads research initiatives while pursuing his Master's in Engineering Management. With a Chemical Engineering background from UMass Lowell, he focuses on product innovation and long-term sustainability strategies that drive the company's technological advancements and market positioning.
Questions
What solar services do you offer?
We provide complete solar installations for homes and businesses, including system design, permitting, equipment procurement, and professional installation. Our services range from small-scale projects to large commercial systems.
Do you offer offgrid energy solutions?
Yes, we create complete offgrid power systems combining solar panels, battery storage, and backup generators using components from Generac and Enphase Energy for reliable energy independence.
What construction services are available?
We build custom pergolas, decks, and ground-mounted solar installations with optional solar integration using translucent bifacial panels that provide both shade and energy generation.
Do you provide energy storage options?
Yes, we install battery storage systems from Generac and Enphase Energy that work with solar panels to store excess energy for backup power during outages or at night.
What areas do you serve?
We serve Massachusetts, New Hampshire, and Rhode Island, with potential expansion to other states upon request for solar installations and energy solutions.
Is financing available for solar projects?
Yes, we offer financing options through partners including the Mass Solar Loan program for Massachusetts residents and third-party loan programs for Rhode Island and New Hampshire clients.
