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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Elysian LLC

PO Box 1573
Pawcatuck , Connecticut 06379
Phone: (860) 373-8658

At Elysian, we see our projects as opportunities to make a meaningful impact on our clients' lives. We strive not just to build high-performance, quality homes but also relationships that will continue for decades. Our network of subcontractors works well together to get projects done on time and on budget with as few complications as possible. We strive to create an atmosphere of excellence among our team. Reliability, transparency, professionalism, trust, and a positive attitude are the primary building blocks of our success. We stand by our word and are determined to conduct ourselves ethically. We love our job. And we only network with other subcontractors that share that love.

Sectors: Commercial, Single Family
Service Area: Connecticut
Professional Specialties: Carpentry/Cabinetry, Design/Build, Passive House, Remodeling/Renovation

Emerald Builders, LLC

PO Box 299
Bowdoinham , Maine 04008
Phone: (207) 841-2775

Emerald Builders is a residential building company serving mid-coast Maine. We focus primarily on building sustainable and energy-efficient homes and buildings. We work closely with our clients, designers, and subcontractors to bring their dreams to reality. We rely heavily on open communication between all parties from conception through project completion to ensure we’ve put out the best possible product for our clients. We pride ourselves on an unwavering commitment to the highest quality craftsmanship and the environment.

Sectors: Multifamily, Single Family
Service Area: Maine
Professional Specialties: Construction Management, Deep Energy Retrofit, Net Zero, Remodeling/Renovation

Emerald House Studio

435 Lancaster Street Suite 360
Leominster , Massachusetts 01453
Phone: (978) 801-0087

We are a women-owned architecture + interiors firm in pursuit of providing sustainable building solutions to the custom residential and business-commercial sectors. We are passionate about fostering close relationships with our clients, and we take a psychological-architectural approach to providing designs that will fit, fill, and fuel their lives and project needs. Our team works closely with a family-owned builder-partner, Downing Construction, Inc. on many projects to offer an integrated design-build delivery method. We currently share a collaborative office space in Leominster, MA.

Sectors: Single Family
WMBE: Women or BIPOC Owned, BuildingEnergy Access Program Participant
Service Area: Maine, Massachusetts, New Hampshire, Vermont
Professional Specialties: Construction Management, Remodeling/Renovation

  Industry Leader NESEA Member  


50 Main St., Ste. 1000
White Plains , New York 10606
Phone: (914) 263-1199

As an integrated energy engineering firm, EN-POWER’s services range from engineering design and implementation to energy consulting, managing, and financing. For all projects, our engineers and analysts focus on energy efficiency and resiliency to maximize project payback and aid long-term facility planning. Our expertise includes traditional HVAC systems, green certifications, code/law compliance (NYC LL87/97), and on-site generation technologies, including PV, CHP, battery storage, and emergency power generators. We assist our clients from all building types in developing a thorough understanding of existing energy-related conditions and developing solutions to improve efficiency and mitigate environmental impacts in their facilities.

Sectors: Commercial, Institutional, Industrial, Multifamily
Service Area: New York
Professional Specialties: Certification/Commissioning, Cogeneration/CHP, Consulting, Deep Energy Retrofit, Energy Auditing, Energy Monitoring, Energy Storage, Engineering, HVAC, Lighting, Mechanical Systems, Photovoltaics, Project Management

Energia, LLC

242 Suffolk St.
Holyoke , Massachusetts 01040
Phone: 413-322-3111

Energia is a socially responsible employee-owned energy services company that provides energy efficiency upgrades for residential and commercial properties. We aim to reduce utility costs and energy use throughout western Massachusetts. Energía’s mission is to create efficient and healthy buildings that transform our communities and environments into thriving places to live and work.

Sectors: Commercial, Multifamily, Single Family
Service Area: Massachusetts
Professional Specialties: Energy Auditing, HVAC, Insulation

Energy Engineering and Design, Inc.

835 East Street
Dedham , Massachusetts 02026
Phone: (781) 775-2698

We are an independent engineering consulting firm that provides comprehensive energy use reduction services for the commercial, education, municipal, federal and industrial sectors. EE&D has the ability to develop a customized facility improvement program that fits your individual needs in the most cost effective way.

Sectors: Commercial, Institutional, Industrial
Service Area: Entire Northeast Region
Professional Specialties: Certification/Commissioning, Community Planning, Consulting, Energy Auditing, Energy Modeling, Engineering

Energy Futures Group

PO Box 587
Hinesburg , Vermont 05461
Phone: (802) 482-2812

Energy Futures Group provides expert consulting services informed by national and international experience in designing and evaluating energy efficiency, renewable energy, and other clean energy programs and policies. We have assisted in the development or engaged in the review of numerous leading programs, including the top 15 states in the ACEEE State Energy Efficiency Scorecard and several countries in Europe. We know what works, what does not, and why.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Consulting, Energy Modeling, Project Management, Public Policy

Energy Infrastructure Partners LLC

194 32nd Street, Floor 2
Brooklyn , New York 00000
Phone: (646) 417-2390

EIP is an MBE-certified implementation and strategic consultant working with utilities and the public sector to support clean energy, including energy efficiency, decarbonization, and renewable energy programs and initiatives. We also provide energy planning, modeling and auditing, retro-commissioning, contractor and workforce training, financial advisory, and all aspects of energy program management.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Consulting, Energy Auditing, Energy Modeling, Engineering, Finance, Incentives

Energy Opportunities

1200 E Camping Area Rd.
Wellsville , Pennsylvania 17365
Phone: (717) 292-2636

Energy Opportunities provides services focused on energy issues and the interface of nature and human enterprises. Founded in 1993, EO is also a part of 7group.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Certification/Commissioning, Community Planning, Consulting, Education, Research

Energy Vision Homes, LLC

15 Forrence Dr.
Hollis , New Hampshire 03049
Phone: (603) 465-2412

Energy Vision Homes is dedicated to enhancing your life through quality, energy-efficient, and sustainably sourced homes. Energy Vision Homes promotes stewardship of our natural resources and environmental quality by educating the public on high-performance buildings that incorporate advanced building components and innovative methods and materials. Our zero-energy homes are tailored to our customers' lifestyles, requirements, and satisfaction.

Sectors: Single Family
Service Area: New Hampshire
Professional Specialties: Design/Build, General Contractor, Healthy Materials, Net Zero, Passive House


455 State Road Pmb# 385
Vineyard Haven , Massachusetts 02568
Phone: (508) 560-3153

Our goal is to make better buildings, improve existing buildings, and rid the Island of Martha’s Vineyard from fossil fuels. Our experience has taught us that having responsibility from initial design to project completion is vital to success. Our services include solar, HVAC, energy storage, EV charging, building efficiency design, and consulting.

Sectors: Single Family
Service Area: Massachusetts
Professional Specialties: Architecture/Design, Consulting, Energy Storage, HVAC, Photovoltaics

EnviENERGY Studio

100 Summer Street, Suite 1600, Boston MA
Boston , Massachusetts 02210
Phone: (857) 263-5630

enviENERGY Studio is a woman-owned sustainable design consulting firm specialized in assisting public and private sector clients to design high-performance buildings. We have experience in higher education, laboratories, offices, libraries and galleries, campuses, industrial facilities and warehouses, and multi-family housing at the regional and national levels. As an adapter and active advocate of the Architecture 2030 challenge, we are well-aligned to create economically and environmentally responsible buildings in the most cost-effective and socially-responsible manner.

Sectors: Commercial, Institutional, Industrial, Multifamily
WMBE: Women or BIPOC Owned
Service Area: Entire Northeast Region
Professional Specialties: Certification/Commissioning, Energy Auditing, Energy Modeling, Healthy Materials, Net Zero, Passive House


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 at one of our organization membership levels. Learn more.