Business Details
11 Years
experience
Your Trusted Solar Panel Services in Chelmsford, MA
DeFreitas Enterprises offers comprehensive turnkey solar installations, construction services, and offgrid energy solutions. Established in 2015, we specialize in engineering, procurement, and construction of solar photovoltaic systems ranging from small residential setups to large-scale commercial projects. Our team provides full-service support, including design, permitting, installation, and long-term system monitoring. We also offer custom construction services like solar-covered pergolas and decks. With over 1,000 kW of solar installations completed across Massachusetts, New Hampshire, and Rhode Island, our experienced professionals prioritize sustainable energy solutions tailored to client needs.Our partnerships with industry leaders like Generac and Enphase Energy ensure access to cutting-edge technology for solar + storage + generator systems. We maintain transparency throughout the process, from initial consultation to project completion, and provide financing options to support accessible renewable energy adoption.
Services
Solar Installations
Construction Services
Offgrid Energy Systems
Battery Storage
Generator Installations
Details
- Year established: 2015
Highlights and features
- We offer turnkey solar solutions from design to installation since 2015
- Our team includes certified engineers and experienced solar installers
- We serve Massachusetts, New Hampshire, and Rhode Island with local expertise
- We partner with LG, Enphase, and Generac for premium solar components
- We provide financing options through Mass Solar Loan and third-party programs
Services
Solar Installations
We design and install custom solar photovoltaic systems for residential and commercial properties. Our turnkey solutions include site assessment, 3D modeling, permitting, and installation of grid-tied or offgrid systems. Using premium LG panels and Enphase microinverters, we optimize energy production while maintaining aesthetic appeal.
Construction Services
Our construction team builds solar-integrated structures like pergolas, decks, and ground mounts. These custom designs combine functionality with renewable energy generation, featuring options for translucent bifacial solar panels that maximize light capture while enhancing outdoor spaces.
Offgrid Energy Systems
We create fully offgrid energy solutions combining solar arrays, battery storage, and backup generators. Partnering with Generac and Enphase, we engineer systems that provide reliable electricity for homes and businesses without utility grid dependence, with scalable storage capacity.
Battery Storage
We integrate advanced battery storage systems from Generac and Enphase to store solar energy for nighttime use or grid outages. Our solutions include partial and whole-home backup options with smart transfer switches that optimize energy distribution during power interruptions.
Generator Installations
We install standby generators compatible with solar + storage systems to ensure continuous power during extended cloudy periods. Our solutions work with existing transfer switches and support hybrid systems that automatically supplement battery reserves when needed.
People
Alexander DeFreitas
President & Chief Engineer
UMass Lowell mechanical engineering graduate with 10+ years solar industry experience. Founded DeFreitas Enterprises in 2015 to bring renewable energy solutions to the Northeast US. Specializes in system design and engineering analysis.
David Shanahan
Sales Manager
Joined in 2019 with background in home energy auditing. Transitioned to installation expert with 2+ years field experience. Graduated from UMass Amherst in 2017 with environmental focus and practical expertise in residential solar applications.
Kyler Gallant
Head of Research
UMass Lowell chemical engineering graduate supporting product research since 2014. Part-time researcher driving long-term sustainability strategy. Currently pursuing Master's in Engineering Management while contributing to technology evaluation and system optimization.
Questions
What solar services do you offer?
We provide complete solar installations including system design, permitting, equipment supply, and installation for residential and commercial properties.
Which areas do you serve?
We operate throughout Massachusetts, New Hampshire, and Rhode Island with plans to expand to other states upon request.
How does the solar installation process work?
The process includes initial consultation, 3D system design, proposal review, contract signing, permitting, structural engineering, installation, and final inspections.
Do you offer financing options?
Yes, we offer Mass Solar Loan programs for MA residents and third-party financing options for clients in other states.
Can you install offgrid systems?
Yes, we specialize in offgrid solutions combining solar panels, battery storage, and backup generators for complete energy independence.
What construction services are available?
We build solar-integrated structures including pergolas, decks, and ground mounts with optional bifacial solar panel installations.
Reviews (3)
Kyler Gallant
May 27, 2021
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Defreitas Enterprise's is the rare company I feel compelled to leave a review for. Removed a tree safely with some additional experiences we all benefited from. If you're questioning the Enterprise's merits I will say they are improving the universe.
Shawn Heath
Oct 07, 2020
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Alex and team are very professional and will do the job with utmost care and concern for the customer. Ive had DeFreitas Enterprises contracted for two solar systems and I can say with absolute certainty that I am thoroughly impressed with the work performed.
Tim Weydt
Jul 16, 2017
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Alex is very professional and provides exceptional service. He walks you through every step of the process and is very approachable. I was looking for a smaller local solar panel installer with a more personal experience.. Alex-Sun provided that, and more! I would recommend Alex-Sun to anyone looking to "go solar" in MA or NH.
