Top 25 energy efficiency companies in the US

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Delve into the dynamic landscape of the top 25 energy efficiency companies in the US as of 2025. These industry leaders, from Carlisle, Pennsylvania's Energy Smart Home Improvement to California's IoEnergy, specialize in pioneering energy audits, HVAC systems, and retrofitting. Iconergy in Colorado and Verdius Energy in Georgia represent strongholds in energy transition and efficiency technologies, impacting residential, commercial, and industrial sectors. Discover the unique investment strategies and sustainability-focused practices that position these firms at the forefront of the energy efficiency sector, addressing opportunities for substantial energy savings and carbon footprint reduction across diverse geographic areas.

PLEMCo logo

PLEMCo

🇺🇸 info@pacltg.com Santa Ana, CA 92705, US

Specializing in renewable energy semiconductor manufacturing, PLEMCo offers innovative energy and water conservation solutions, including EV charging infrastructure and photovoltaic design, aimed at reducing costs and carbon footprints for businesses and government entities across the U.S. Their expertise in energy efficiency and comprehensive service offerings, from investment-grade audits to retro-commissioning, positions them as a leader in the clean energy sector.

renewable
energy
conservation
lighting
audits
solar
charging
retrofitting
infrastructure
water
efficiency
recycling
Company size: 11-50
Founded: 2003
Energy Smart Home Improvement logo

Energy Smart Home Improvement

🇺🇸 20 Beech St Unit B

Specializing in residential energy efficiency, this firm offers innovative solutions such as energy audits, retrofitting, and new construction assistance to enhance home comfort, reduce energy bills, and lower carbon footprints. Their commitment to budget-friendly services and exceptional customer support distinguishes them in the construction industry.

energy efficiency
home comfort
energy audits
retrofitting
insulation
air sealing
weatherization
energy savings
building envelope
duct testing
window replacement
EnergyStar
Company size: 2-10
Minify Energy logo

Minify Energy

🇺🇸 213 4th St E 4th Fl. Saint Paul, Minnesota 55101, US

Minify Energy specializes in energy efficiency solutions within the real estate sector, offering services such as energy assessments, project management, and utility bill audits to help clients reduce energy consumption and environmental impact. Their innovative approach emphasizes transparency and practicality, making them a dedicated partner for building owners and property managers seeking sustainable energy practices.

energy efficiency
project management
renewables
LED lighting
solar
sustainability
utility audit
energy assessments
HVAC
building automation
water conservation
smart controls
Company size: 2-10
Founded: 2018
Verdius Energy logo

Verdius Energy

🇺🇸 Atlanta, US

Verdius Energy specializes in providing innovative energy efficiency solutions within the architecture and planning industry, focusing on city-mandated benchmarking, energy assessments, and management. Their expertise in HVAC, lighting, and building automation systems, along with a commitment to resource efficiency, positions them as a key partner in energy transition planning and high-efficiency retrofitting.

energy efficiency
energy management
benchmarking
energy audits
HVAC
lighting
heat pumps
building automation
retro-commissioning
utility rebates
resource efficiency
water efficiency
Company size: 2-10
Founded: 2020
CMC Energy Services logo

CMC Energy Services

🇺🇸 550 Pinetown Road Suite 340

A woman-owned energy efficiency firm specializing in innovative solutions for energy conservation, focusing on enhancing sustainability and environmental health. With nearly 40 years of experience, it offers comprehensive services including energy audits, program management, and training to help utilities meet energy efficiency goals and foster better customer relationships.

energy efficiency
energy conservation
sustainability
energy audits
program design
energy management
training
certification
building science
utility programs
environmental services
Company size: 201-500
Founded: 1977
Blue Planet Energy Solutions logo

Blue Planet Energy Solutions

🇺🇸 6540 Lusk Blvd C204

Blue Planet Energy Solutions specializes in providing innovative energy services, including the design and implementation of energy savings projects, retrofitting, and energy management systems. Their focus on cutting-edge energy-efficient technologies, such as LED lighting and advanced controls, helps businesses significantly reduce energy costs and enhance sustainability.

energy services
energy management
energy conservation
power generation
energy supply
risk management
LED lighting
lighting controls
energy savings
retrofitting
energy infrastructure
Company size: 11-50
Founded: 2010
Eco Performance Builders logo

Eco Performance Builders

🇺🇸 5063 Commercial Cir. Unit C Concord, Ca 94520, US

Eco Performance Builders specializes in energy retrofits and green building within the construction industry, focusing on enhancing home performance for improved energy efficiency, comfort, safety, and health. Their certifications and participation in energy upgrade programs highlight their commitment to innovative, sustainable practices.

construction
home performance
energy retrofits
energy audits
HVAC
green building
insulation
energy efficiency
Company size: 11-50
Founded: 2010
Energy Squared, LLC logo

Energy Squared, LLC

🇺🇸 5 Independence Way Suite 360

Energy Squared, LLC is a full-service design firm specializing in mechanical, electrical, plumbing, and refrigeration (MEPR) consulting, with a strong focus on energy efficiency and renewable energy solutions. Leveraging a team of licensed professionals and extensive expertise, it offers innovative design services and energy audits tailored for multifamily residential, commercial, and refrigerated facilities, ensuring cost-effective and sustainable project outcomes.

mechanical design
electrical design
plumbing design
refrigeration design
energy consulting
building performance
renewable energy
energy audits
LEED services
energy modeling
cost-effective solutions
sustainable design
Company size: 51-200
Founded: 2009
LewLew, Inc. logo

LewLew, Inc.

🇺🇸 1717 Pennsylvania Avenue, NW Suite 1025

LewLew, Inc. specializes in renewable energy semiconductor manufacturing and energy management consulting, offering innovative solutions for water and energy conservation. Their unique approach includes no-cost building assessments and a retrofitting program that guarantees savings without upfront capital, enabling clients to significantly reduce energy costs.

renewable energy
energy management
semiconductor manufacturing
energy conservation
building assessment
energy efficiency
cost reduction
retrofitting
solar energy
natural gas
energy solutions
Company size: 2-10
Founded: 2014
Ecovative logo

Ecovative

🇺🇸 4400 Colley Ave Suite 2

Ecovative specializes in sustainable construction solutions, offering customized project team support to enhance building performance through energy audits, conservation strategies, and green energy initiatives. The focus on third-party testing and comprehensive guidance on certifications and incentives positions it as a leader in energy-smart planning and execution.

sustainable planning
energy audits
conservation
green energy
clean energy
energy reduction
commissioning
code compliance
building science
resiliency
HVAC design
design consulting
Company size: 2-10
Founded: 2009
Carleton Energy Consulting logo

Carleton Energy Consulting

🇺🇸 818 6th Avenue New York, New York 10001, US

Carleton Energy specializes in environmental services, focusing on compliance with Local Laws 87 and 84 while offering innovative energy efficiency solutions. Their unique approach includes a comprehensive suite of services, such as advanced boiler management and real-time utility monitoring, positioning them as a leading provider in energy management within the real estate sector.

energy
efficiency
compliance
benchmarking
boiler
management
monitoring
retrofitting
utility
conservation
systems
software
Company size: 11-50
Founded: 2012
Smart Building Systems, Inc. logo

Smart Building Systems, Inc.

🇺🇸 1456 McLendon Dr. Suite C

Smart Building Systems, Inc. is an engineering and technology consulting firm specializing in energy efficiency and sustainability services, offering innovative solutions such as energy modeling, building commissioning, and renewable energy generation. With a focus on creating "Smart Buildings," it provides clients with expert resources to enhance operational efficiency and achieve LEED certification.

engineering
energy
sustainability
commissioning
LEED
renewable energy
energy efficiency
program management
retro-commissioning
energy modeling
audits
consulting
Company size: 11-50
Founded: 2006
Going Green Nrg co logo

Going Green Nrg co

🇺🇸 1399 S Garfield Ave Loveland, Colorado 80537, US

Specializing in energy conservation, this entity focuses on maximizing energy efficiency through innovative lighting retrofitting and water regulation solutions. Their expertise includes retrofitting various lighting systems and implementing advanced water-saving technologies, aimed at helping clients leverage incentives to enhance property efficiency and reduce costs.

energy efficiency
lighting retrofitting
water conservation
electric vehicle charging
thermostats
flush systems
electrical appliances
building retrofitting
energy conservation
incentives
Company size: 11-50
Founded: 2023
Zerodraft Maryland logo

Zerodraft Maryland

🇺🇸 York Rd Timonium, Maryland 21093, US

Zerodraft Maryland specializes in environmental services focused on enhancing energy efficiency for residential, multifamily, and commercial properties. By leveraging innovative products and techniques, the firm aims to minimize energy costs and environmental impact, having conducted over 20,000 energy audits to date.

energy efficiency
energy audits
insulation
air sealing
blower door testing
duct leakage testing
utility rebates
commercial lighting
home performance
retrofitting
multifamily housing
residential consulting
Company size: 11-50
Founded: 2008

Specializing in environmental services, this firm offers comprehensive energy consulting and efficiency contracting, focusing on building diagnostics to enhance home comfort, safety, and energy efficiency. Their unique approach includes detailed energy analyses and access to various funding programs, enabling significant cost savings and reduced carbon footprints for homeowners.

energy efficiency
building diagnostics
energy consulting
home assessment
energy analysis
insulation
air sealing
funding incentives
energy consumption
carbon footprint
home audits
Company size: 2-10
Founded: 2010
Building Energy logo

Building Energy

🇺🇸 1570 South Brownell Road Williston, VT 05495, US

Building Energy specializes in providing comprehensive energy solutions within the construction industry, focusing on sustainable practices such as energy audits, insulation, and the installation of solar electric systems and heat pumps. Their innovative "whole systems approach" aims to significantly reduce the carbon footprint of buildings through a combination of conservation, efficiency, and renewable energy integration.

energy audits
solar electric
insulation
heat pumps
energy retrofits
renovations
construction
weatherization
sustainability
carbon reduction
Company size: 11-50
Founded: 2007
Newman Consulting Group, LLC logo

Newman Consulting Group, LLC

🇺🇸 Farmington Farmington, MI, US

Specializing in renewable energy semiconductor manufacturing, this firm focuses on enhancing building efficiency through energy audits, retrofitting, and certification services, aiming to reduce costs and environmental impact while improving occupant comfort and productivity. Their innovative approach includes partnering with various organizations and providing comprehensive project management for energy-efficient building design and certification.

renewable energy
semiconductor manufacturing
energy audits
LEED certification
energy efficiency
indoor air quality
commissioning
retro-commissioning
energy star
power purchase agreements
PACE financing
building design
Company size: 11-50
Founded: 2002
Iconergy, Ltd. logo

Iconergy, Ltd.

🇺🇸 1905 Sherman Street Suite 1040

Iconergy specializes in environmental services by providing innovative energy management solutions aimed at optimizing energy usage and enhancing sustainability for building owners. With a focus on energy efficiency, renewable energy systems, and tailored strategies, it delivers comprehensive services from energy audits to project development, ensuring significant cost reductions and minimal environmental impact.

energy management
energy efficiency
renewable energy
energy audits
retrofitting
performance contracting
sustainability
energy analysis
project development
financing options
commissioning
environmental impact
Company size: 11-50
Founded: 2010
Vert Energy Group logo

Vert Energy Group

🇺🇸 333 City Blvd. West, 17th Floor Orange, CA 92868, US

Vert Energy Group specializes in energy efficiency and engineering services, providing comprehensive solutions for energy benchmarking compliance, audits, and upgrades. Renowned for its technical expertise and innovative strategies, it delivers cost-effective and environmentally sustainable energy management solutions tailored to meet the needs of both private and government entities.

energy efficiency
energy audits
building upgrades
energy compliance
project management
sustainability
energy engineering
energy savings
commercial real estate
green building
energy solutions
pilot programs
Company size: 11-50
Founded: 2009
Advanced Efficiency Worx logo

Advanced Efficiency Worx

🇺🇸 224 N George St York, Pennsylvania 17401, US

Specializing in residential building construction, this firm focuses on enhancing home and business efficiency through innovative solutions in insulation, windows, doors, and energy audits, ultimately helping clients save money and reduce energy consumption. Their unique approach emphasizes measurable improvements in energy conservation and utility savings.

residential construction
energy efficiency
insulation
windows
doors
weatherization
lighting
energy audits
utility savings
HVAC
energy conservation
cost savings
Company size: 11-50
Founded: 2017
RICH ENERGY SOLUTIONS, LLC logo

RICH ENERGY SOLUTIONS, LLC

🇺🇸 1418 NEW RD Northfield, New Jersey 08225, us

Rich Energy Solutions, LLC specializes in energy conservation within the construction industry, focusing on reducing overall energy consumption and expenses through a comprehensive, whole-building approach. Their innovative strategies position them as a leader in energy efficiency solutions.

energy conservation
energy efficiency
building optimization
cost reduction
sustainability
holistic approach
resource management
Company size: 11-50
Founded: 2010
Energy 350, Inc. logo

Energy 350, Inc.

🇺🇸 1033 SE Main St. Suite 1

Energy 350, Inc. specializes in energy efficiency consulting and services, focusing on optimizing building systems to reduce costs and environmental impact. Their innovative approach includes detailed energy studies and customized solutions for complex systems, making them a valuable partner for businesses seeking to enhance energy performance and leverage incentive programs.

energy efficiency
energy studies
retro-commissioning
strategic energy management
energy consulting
building systems
technical analysis
HVAC controls
industrial refrigeration
cost savings
incentive programs
energy performance
Company size: 51-200
Founded: 2011
Grace Energy Services logo

Grace Energy Services

🇺🇸 London , Ohio 43140, US

Grace Energy Services specializes in providing licensed electrical services for commercial and industrial sectors, focusing on retrofitting and installing energy-efficient lighting solutions. Their innovative approach includes LED upgrades and comprehensive energy audits to significantly reduce lighting energy consumption.

electrical services
energy efficiency
lighting upgrades
LED
retrofitting
energy audits
commercial lighting
industrial lighting
Company size: 2-10
Founded: 2015
M3 Services logo

M3 Services

🇺🇸 835 Central Ave. #301

M3 Services specializes in providing energy-efficient solutions in the HVAC and electrical sectors, focusing on energy reduction and indoor air quality enhancement through innovative technologies. As a Service-Disabled Veteran Owned Small Business, it offers cost-effective upgrades and comprehensive contracting services, leveraging utility incentives to drive significant energy savings and improve environmental health in various facilities.

energy efficiency
HVAC
electrical
indoor air quality
energy audits
solar
retrofitting
construction
energy reduction
smart thermostats
building management
utility incentives
Company size: 11-50
Founded: 2019
Sunwave USA Holdings, Inc. logo

Sunwave USA Holdings, Inc.

🇺🇸 100 Cambridge St 14th Floor

Sunwave USA Holdings, Inc. is an innovative energy management firm in the oil and gas industry, specializing in helping clients optimize energy consumption and reduce costs through a range of services, including energy audits, LED lighting solutions, and building upgrades. Their focus on energy efficiency and conservation positions them as a dynamic player in promoting sustainable energy practices.

energy management
conservation
LED lighting
HVAC
natural gas
electricity
energy audits
building upgrades
green energy
Company size: 51-200

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