NESEA Business Member Directory

The NESEA Business Member Directory includes all organizations that are NESEA Business, Academic, and Non-Profit/Government Members.  Please let people know that you learned about their services from the directory.

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Garland Mill

273 Garland Road
Lancaster , New Hampshire 03584
Phone: (603) 788-2619

Garland Mill small Design+Build firm located at the base of Mt. Cabot in Lancaster NH. We specialize in the design and construction of high performance buildings. Net Zero and DERs have become particular sweet spots, but we are excited to pursue any building project that integrates exceptional energy performance with beautiful and durable craftsmanship. While the heart of our business is the design and construction of high performing buildings, the soul of our business resides in our old water powered sawmill that has been in continuous operation since 1856. When the mill isn't running we use it to produce clean energy with a small hydro and a 30 kW solar electric array.

Sectors: Commercial, Single Family
Service Area: Maine, New Hampshire, Vermont
Professional Specialties: Architecture/Design, Building Envelope, Building Supply, Carpentry/Cabinetry, Construction Management, Deep Energy Retrofit, Design/Build, General Contractor, Net Zero, Passive House, Photovoltaics, Project Management, Remodeling/Renovation, Timber Framing

George Penniman Architects, LLC

PO Box 338
Essex , Connecticut 06426
Phone: (860) 227-3445

George Penniman Architects is a full-service, client-oriented firm working on large and small scale residential projects, as well as small commercial and institutional projects throughout New England. Our work is characterized by its contextual nature, high performance building practices and environmental stewardship. George Penniman is a Certified Passive House Designer/Consultant and LEED for Homes professional.

Sectors: Single Family
Service Area: Connecticut, Maine, Massachusetts, New York, Rhode Island
Professional Specialties: Architecture/Design, Landscape Design, Net Zero, Passive House

GF55 Architects

225w 39th St. Fl. 9
New York , New York 10018
Phone: (212) 352-3099

Founded in 1984, GF55 is dedicated to the practice of architecture. We use context as an organic approach to design. The classic principles of durability, utility, and delight serve as a foundation for creative expressions. Modern solutions are anchored by precedent. Recognized for our attention to detail and swift execution, our methodology is results-oriented without prejudice to project type or scale.

Sectors: Commercial, Institutional, Multifamily
Service Area: New York
Professional Specialties: Architecture/Design

Global Wholesale Supply

P.O. Box 538
Grasonville , Maryland 21638
Phone: (760) 521-8854

Global Wholesale Supply is the North American distributor of Steico wood fibre insulation products. Steico is the largest fiberboard manufacturer in the World and provides a full line of products from rigid insulation to flexible wood fibre batts to blown in insulation. Global Wholesale and Steico promote healthy, vapor open wall systems for healthy homes.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Indoor Air Quality, Insulation

GOGO Charters Boston

137 Newbury St., 6th FL.
Boston , Massachusetts 02116
Phone: (617) 206-3898

GOGO Charters is a private group transportation service that operates 24/7 in and around the state of Massachusetts. We provide minibus, charter bus, motorcoach and shuttle rentals for corporate conferences, business seminars, airport trips, emergency evacuations, personal group trips and more. Simply contact us at 617-206-3898 and a representative will provide you with a free, no-obligation trip quote.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Massachusetts
Professional Specialties: Transportation

  Midsize NESEA Business Member  

Granite State Solar, LLC

57 Ryan Rd.
Bow , New Hampshire 03304
Phone: (603) 369-4318

Granite State Solar is an award-winning solar panel installation company, in business since 2008. We design, sell, and install customized photovoltaic energy systems to best meet your needs and yield optimal financial results. We offer roof- and ground-mounted solar systems, solar carports and canopies, as well as backup battery energy storage. Our resilient energy solutions conserve energy and save money all while reducing your carbon footprint. With our customer-centric approach, our goal is to provide the best solar experience in New Hampshire. That means we work as your energy consultants, answering all your questions and promise no hard sales, ever.

Sectors: Multifamily, Single Family
Service Area: New Hampshire
Professional Specialties: Energy Storage, Photovoltaics, Solar Parking Structures

Graphite Studio

235 Triangle Street
Amherst , Massachusetts 01002
Phone: (413) 835-0008

A small design firm focusing on high performance housing, deep energy retrofits, net zero homes, Passive new construction and existing buildings in Western New England. Licensed architect (NH, VT, ME) and Passive House consultant.

Sectors: Single Family
Service Area: Maine, Massachusetts, New Hampshire, Vermont
Professional Specialties: Architecture/Design, Building Envelope, Deep Energy Retrofit, Net Zero, Passive House, Remodeling/Renovation

Greentech Renewables

2 Toelles Rd. Units 6, 7 & 8
Wallingford , Connecticut 06492
Phone: (203) 269-8064

CED Greentech East serves East of the Mississippi in the ever-expanding solar industry. We work closely with installers and have both excellent service and extensive experience in the electrical and photovoltaic fields. Our goal is to meet your project requirements at a competitive price, and to manage and deliver your system in a timely and professional manner. Our stock of material and accessories will help complete your jobs without any holdups! Greentech personally handles daily deliveries throughout the region, ensuring that your complete system arrives on time and at no additional cost to you! We get low freight rates through our corporate account and your order will be shipped out same day!

Sectors: Institutional, Industrial, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Building Supply, Community Planning, Education, Electrical, Energy Auditing, Incentives, Photovoltaics

Gregorio Sustainability

Phone: (301) 467-8058
Service Area:

Gryphon Doors by New Frameworks

1 Mill St. Ste. 160
Burlington , Vermont 05401
Phone: (802) 448-2206

Gryphon doors are a high-performance harmony of natural innovation and timeless construction; a guardian for your home, equal parts care and courage.

Gryphon is built by New Frameworks, a worker-owned cooperative of natural builders, architectural designers, permaculture practitioners, gardeners and family people – we know the landscape well. We began building these doors in 2012 for our own projects — improving the design at each step until 2019 where we are now proud to make them available for your next high-efficiency building project.

Sectors: Multifamily, Single Family
Service Area: Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont
Professional Specialties: Affordable Housing, Architecture/Design, Building Envelope, Building Supply, Carpentry/Cabinetry, Deep Energy Retrofit, Design/Build, Healthy Materials, Net Zero, Passive House

Hardwick Post & Beam

272 Fleming Rd., PO Box 225
Hardwick , Massachusetts 01037
Phone: (413) 477-6430

We are a company of craftspeople. For 33 years we have designed and built beautiful, custom, timber frame structures for clients in Massachusetts, New England, and across the United States. A family company in its second generation of leadership, we have been employing a group of timber framers year-round for more than three decades, and are committed to our people. We are very eager to work with architects and builders who are in the front line of cutting-edge energy sustainability and who want to pair their product with the beauty and tradition of a timber frame.

Sectors: Commercial, Institutional, Single Family
Service Area: Connecticut, Massachusetts, New Hampshire, Vermont
Professional Specialties: Construction Management, Design/Build, Timber Framing

HELM Construction Solutions

139 Main St #602
Brattleboro , Vermont 05301
Phone: (802) 225-8933

HELM offers innovative business consulting, coaching, project management, and training services. Our experienced team members work with owners, designers, and builders to create high-performance buildings and businesses throughout North America. HELM's purpose is to revolutionize the construction industry, centering the triple bottom line principles of planet, people, and prosperity to become a catalyst for climate justice.

Sectors: Commercial, Multifamily, Single Family
WMBE: Women or BIPOC Owned
Service Area: Entire Northeast Region
Professional Specialties: Construction Management, Consulting, Design/Build, Living Building Challenge, Net Zero, Passive House, Project Management


The NESEA Business Member Directory is the premier referral resource for consumers and professionals looking for high-performance building and renewable energy professionals in the Northeast.

A listing in this directory results in increased visibility and referrals for our member organizations. The NESEA Business Member Directory is published online and in print (fall issue of BuildingEnergy magazine, circulation 3500). If you would like to be included in the directory, join NESEA today as at one of our organization membership levels. Learn more.