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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377 Builders

940 Main Street, Suite 2
Great Barrington , Massachusetts 01230
Phone: (413) 273-7770

We are a member-owned general contracting company based in the Berkshires of Western Massachusetts. Our expertise is in residential and light commercial construction, including additions and full-scale renovations for your home or building. We also specialize in custom cabinetry and sustainable practices. We are a tech-savvy group that uses web-based project management tools which make collaboration an easy and enjoyable experience. We'll present you with the best options to suit your vision and resources whether innovative, traditional, or a blend of both.

Sectors: Single Family
Service Area: Massachusetts
Professional Specialties: Carpentry/Cabinetry, Design/Build, General Contractor, Remodeling/Renovation


1752 NW Market St #430
Seattle , Washington 98017
Phone: (206) 913-2367

Triple Bottom Line Construction (3BLC) is a Seattle based and employee owned general contractor dedicated to work that is socially, economically, and environmentally sustainable. Remodel and new construction with a commitment to social, economic, and environmental sustainability.

Sectors: Single Family
Service Area:
Professional Specialties: General Contractor, Remodeling/Renovation

  Midsize NESEA Business Member  

475 High Performance Building Supply

334 Douglass St.
Brooklyn , New York 11217
Phone: (718) 622-1600

475 High Performance Building Supply provides essential building knowledge and components to building professionals. is a trusted source of free knowledge, and an easy-to-use platform for purchasing high quality European building envelope solutions. Learn about Pro Clima’s complete airsealing system, Lamilux PHI certified skylights, Lunos ductless HRVs, GUTEX wood fiberboard insulation, and Optiwin windows - plus download free Smart Enclosure system details and guide books today.

Sectors: Commercial, Institutional, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Building Supply, Healthy Materials, Insulation, Passive House, Windows

603 Solar

24 Charter St.
Exeter , New Hampshire 03833
Phone: (603) 570-2607

603 Solar is a solar energy service based in Exeter, NH. We wanted to begin a solar company based on the values of integrity and honesty, providing an amazing customer experience and getting people the best return on investment. We pride ourselves on our educative approach to showing people the advantages of solar, and strive to get people the best return on investment.

Sectors: Commercial, Multifamily, Single Family
Service Area: New Hampshire
Professional Specialties: Photovoltaics

  Midsize NESEA Business Member  

A Yard & A Half Landscaping Cooperative, Inc.

26 Thayer Rd.
Waltham , Massachusetts 02453
Phone: (781) 788-8855

A Yard & A Half Landscaping Cooperative was formed in 2013 to preserve and continue to develop a locally-owned, safe, just, and democratic workplace in an industry where workers often face exploitation, wage theft, and hazardous working conditions. Participation in the cooperative is a financial and career investment for members, not just a job. Worker-owners participate in professional development, learning transferable skills and creating economic growth and self-sufficiency. We also share in the profits of our labor, allowing us to reinvest in our own local economy, communities, and families.

Sectors: Single Family
Service Area: Massachusetts
Professional Specialties: Consulting, Landscape Design, Pavement/Masonry

A9 Green

329 Massachusetts Ave., Suite #3
Lexington , Massachusetts 02420
Phone: (781) 357-2454

A9 Green has been conducting Energy Consulting and Home Energy Ratings (HERS Rating) in over 95 cities and towns in Massachusetts since 2009. We work with developers, architects, builders, and homeowners in the Greater Boston and Eastern Massachusetts areas. With expertise in digital 3D and energy modeling, Massachusetts code compliance, and architecture and building science, we provide a variety of services to ensure new homes meet and exceed energy efficiency standards.

Sectors: Single Family
Service Area: Massachusetts
Professional Specialties: Consulting, Energy Auditing, HERS Rater, Passive House

  Midsize NESEA Business Member  

Abode Energy Management

555 Virginia Rd., Suite 202
Concord , Massachusetts 01742
Phone: (339) 707-0918

Abode is a Massachusetts-based energy management and consulting company with expertise in residential building science, energy efficiency, and strategic electrification. Abode has decades of collective experience supporting energy efficiency and home performance programs, both as a participating contractor and a lead vendor. We have industry-leading experience with air source heat pump systems and work with more than 12 municipal light plants and communities providing customer-facing education, contractor recruitment and qualification, and quality assurance programs supporting the adoption of heat pumps.

Sectors: Multifamily, Single Family
Service Area: Connecticut, Massachusetts
Professional Specialties: Building Envelope, Certification/Commissioning, Consulting, Consumer Information, Deep Energy Retrofit, Education, Energy Auditing, Energy Modeling, HERS Rater, HVAC, Incentives, Insulation, Net Zero, Project Management, Public Policy

Ace Energy Services, Inc. – Applied Building Science

89 Turnpike Rd.
Ipswich , Massachusetts 01938
Phone: (617) 221-6281

At Ace Energy Services, we apply our knowledge of building science by focusing on two of the most important components in meeting state energy codes—the building enclosure and mechanicals. We advise on how to make tight building enclosures often assisting with effective air sealing measures. We design and install the most advanced air-source heat pump systems. This combined with implementing a practical ventilation strategy creates energy efficient and comfortable homes. We don’t just test and consult, we implement measures all the way through to satisfactory system operation. This includes building owner or occupant education and instruction.

Sectors: Multifamily, Single Family
Service Area: Massachusetts, New Hampshire
Professional Specialties: Building Envelope, Energy Auditing, HERS Rater, HVAC, Indoor Air Quality

Acorn Energy Solutions, LLC

155 Androvette St.
Staten Island , New York 10309
Phone: (718) 280-1216

Acorn Energy Solutions serves solar developers, contractors, and commercial clients with the necessary services to support renewable and green business projects. We have a team of accessible Design Engineers, Instructors, Professional Engineers, Electricians, and subject matter experts who can discuss your project in detail. We offer Solar Packages for permitting, designing, and IT monitoring solutions.

Sectors: Commercial, Multifamily, Single Family
Service Area: New Jersey, New York
Professional Specialties: Architecture/Design, Consulting, Electrical, Energy Monitoring, Energy Storage, Engineering, General Contractor, Incentives, Photovoltaics, Project Management, Roofing, Solar Parking Structures

Advanced Building Analysis, LLC

2 Woodlawn St.
Amesbury , Massachusetts 01913
Phone: (978) 270-3911

ABA is an industry leader of energy analysis, diagnostic, and verification services in Massachusetts and southern NH. We are an ENERGY STAR partner who helps builders of new single family and multi-family homes meet the challenges of higher energy efficiency standards and cost effectiveness. ABA consults with architects and builders to improve building energy efficiency to meet or exceed program goals established by EPA’s ENERGY STAR, MA Residential New Construction programs, as well as Building Code consultation and verification.

Sectors: Multifamily, Single Family
Service Area: Massachusetts, New Hampshire
Professional Specialties: Certification/Commissioning, Energy Auditing, Energy Modeling, HERS Rater, Passive House

Ai3 Architects, LLC

526 Boston Post Rd.
Wayland , Massachusetts 01778
Phone: (508) 358-0790

Ai3 Architects has been a leader in education design for over 25 years. The firm strives to design the most outstanding educational facilities in the world; facilities which inspire and facilitate learning at the very highest level. Our extensive portfolio includes environmentally conscious design, including net-zero energy buildings, at a large-scale.

Each of our talented team members understands that our tremendous success has been achieved through focus, vision, sacrifice, and passion; and is committed to delivering these same qualities in each of our future endeavors.

Sectors: Institutional
Service Area: Massachusetts, Rhode Island
Professional Specialties: Architecture/Design, Net Zero

Air Barrier Solutions, Inc.

257 Middle Rd.
Crown Point , New York 12928
Phone: (518) 597-4503

We provide air barrier and insulation inspection/audit services, including bulk foam installation, across the U.S. and Canada. All of our projects begin with a state-of-the-art diagnostic evaluation. Customized retrofit plans are developed for each building. Air Barrier Solution's crews and project managers use proprietary, quality assurance, and measurement verification methodologies to complete projects.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Building Envelope, Deep Energy Retrofit, Energy Auditing, Energy Monitoring, Insulation


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.