Best Clean Energy Companies Suppliers in United States

General Atomics

🇺🇸 United States

1955

More than 10000 people

Manufacturer/Service Company

High capacity factory

Established brand

Large enterprise group

ODM manufacturer

Shipments

Key customer

PETRON CORPORATION

Key market

🇺🇸 United States

Description

General Atomics is a leading privately held energy and defense corporation headquartered in San Diego, California. Founded in 1955, the company has grown into a vertically integrated global innovator with over 14,000 employees, specializing in high-technology research, development, and manufacturing. The organization operates through several specialized divisions, including Aeronautical Systems (GA-ASI) and Electromagnetic Systems (GA-EMS), serving major government and commercial clients such as the U.S. Air Force, U.S. Navy, and various international utilities. The company's extensive product portfolio is centered on four primary pillars: Unmanned Aircraft Systems, Energy, Defense, and Commercial Products. General Atomics is a pioneer in Remotely Piloted Aircraft (RPA), notably the Predator, Reaper, and Avenger series, as well as advanced airborne sensors and tactical reconnaissance radars. In the energy sector, the company maintains a 65-year legacy in nuclear innovation, operating the DIII-D magnetic fusion research program and developing TRIGA research reactors, alongside next-generation modular helium reactor designs. As a major contract manufacturer and OEM, General Atomics provides critical defense technologies including the Electromagnetic Aircraft Launch System (EMALS) and Advanced Arresting Gear (AAG) for aircraft carriers. Their capabilities extend to satellite systems, laser technologies, high-voltage capacitors, and radiation monitoring systems. With a 120-acre main campus and global facilities, the company maintains rigorous quality standards, including Nuclear Quality Assurance-1 (NQA-1) certification, to support its end-to-end engineering and technical support services.

Energy Systems and Products

Commercial Products

Dynapower Company, LLC

🇺🇸 United States

1963

101-200 people

Manufacturer/Service Company

Established brand

OEM manufacturer

Product customization

Patented technology

Shipments

Key customer

NEWEN SYSTEMS

Key market

Asia

Description

Dynapower Company, LLC, a part of Sensata Technologies, is a leading US-based manufacturer and service company specializing in energy storage and power conversion systems. Established in 1963, the company operates a 150,000 square-foot vertically integrated facility in South Burlington, Vermont, where it designs, manufactures, and tests its products. With 101 to 200 employees, Dynapower has deployed over 45,000 power conversion units and delivered 2 gigawatts of clean energy systems globally, with products installed on five continents and in over 60 countries. The company is ISO 9001 and UL certified, and ITAR registered, ensuring high quality and compliance. Dynapower's core product lines include Hydrogen Power Systems (electrolyzer power supplies, fuel cell inverters), Energy Storage Systems (utility scale, behind the meter, DC coupled, for EV charging), Rectifiers (SCR, switch mode, high power, controls), Transformers, and Frequency Converters. They offer both standard and custom-engineered solutions, ranging from 10 kilowatts to 50 megawatts, serving diverse markets such as hydrogen production, e-mobility, industrial applications (metal finishing, mining, steel, chlor-alkali), and government/defense. Dynapower also provides extensive aftermarket services, including 24/7 technical support, field service, preventative maintenance, repairs, and upgrades.

Trax Industrial Products Corp

🇺🇸 United States

1978

5-10 people

Manufacturer/Wholesaler/Distributor

Established brand

OEM manufacturer

Product customization

Industry association member

Key customer

AIRBUS

Description

Trax Industrial Products Corp, established in 1978 and based in Loomis, California, is a custom manufacturer, wholesaler, and distributor specializing in environmental control and containment solutions. With a team of 5-10 employees and an estimated annual revenue between $500,000 and $4.9 million, the company has evolved from a manufacturing representative to a full-fledged manufacturer operating a factory since 1998. They are recognized as an industry leader in airflow management and containment solutions, serving a global customer base that includes prominent organizations like MIT, NASA, Boeing, and Siemens. Trax Industrial Products Corp offers a comprehensive range of custom-fabricated products, including data center containment solutions (hot aisle/cold aisle curtains), cleanroom curtains (softwall, portable, hardwall), laser barrier curtains, industrial curtain walls, plastic strip doors, and airport draft curtains. They also provide bulk roll materials, back flow covers, welding screens, and air doors. All products are custom manufactured using high-quality flexible vinyl materials, with test data available for anti-static and flame spread properties. The company emphasizes custom fabrication to meet specific customer application needs and holds a BBB Accreditation.

EIG Global Energy Partners

🇺🇸 United States

1982

101-200 people

Service Company/Manufacturer

Established brand

OEM manufacturer

Product customization

Key customer

AFFILIATED MANAGERS GROUP

Key market

🇺🇸 United States

Description

EIG Global Energy Partners is a prominent investment firm and service provider specializing in the global energy and infrastructure sectors. Headquartered in Washington, D.C., with a significant international presence across six continents, the company operates as an independent partnership with a history dating back to 1982. The firm manages over $24 billion in assets and has committed more than $51 billion to hundreds of projects across 44 countries. Their core expertise lies in private investments, including private credit, private equity, and infrastructure funds, where they provide customized capital solutions ranging from senior debt to common equity for energy-related projects. In addition to its investment activities, the organization maintains a strong focus on energy management and technical services. Operating with a team that includes specialized investment professionals and engineers, the company provides independent consultancy, energy contract procurement, and utility revenue recovery. They serve a diverse client base including educational institutions, healthcare facilities, and large-scale industrial corporations like Saudi Aramco and Toyota. The firm is also involved in the manufacturing sector, specifically focusing on non-domestic cooling and ventilation equipment. This includes the production of industrial ventilators, fans, and aeration systems for commercial applications. By combining financial expertise with technical manufacturing and energy monitoring capabilities, the company helps clients optimize energy consumption, achieve carbon savings, and manage complex infrastructure assets.

A Conversation with R. Blair Thomas: Navigating the Energy Landscape

SUNPLUS OPTIMUM INC

🇺🇸 United States

2022

51-100 people

Manufacturer/Trading Company/Distributor

OEM manufacturer

ODM manufacturer

Product customization

Multinational enterprise

Key customer

THE ENERGY PANAMA

Key market

Europe

Description

SUNPLUS OPTIMUM INC is a premier American solar energy manufacturer and distributor headquartered in Albany, New York. Established in 2022, the company has rapidly emerged as a significant force in the renewable energy sector, specializing in the production of high-efficiency photovoltaic (PV) modules, advanced energy storage systems (ESS), and solar inverters. Operating with a global production capacity of 6.5GW for modules and 2GWh for LFP batteries, the company serves developers, contractors, and EPCs across North America, South America, and Western Europe. The company's extensive product portfolio features cutting-edge solar technologies, including N-type, HJT, TOPCon, and Shingled solar cells. Their PV modules, which range from 400W to 800W, include specialized options such as the LYCHEE N Series, bifacial panels, and Building Integrated Photovoltaics (BIPV) like solar cell roof tiles. For energy storage, SunPlus offers residential and commercial LiFePO4 battery packs, including liquid-cooled systems and modular 5kWh units that are parallelizable for large-scale utility use. Their inverter line encompasses microinverters, string inverters, and hybrid systems. SunPlus emphasizes quality and supply chain reliability, manufacturing products under Bloomberg Tier 1 guidelines and maintaining CSA and UL certifications for seamless integration into the American market. As a contract manufacturer (OEM/ODM) with a domestic assembly presence, the company leverages four strategic warehouse facilities in California, New Jersey, and Texas to ensure efficient distribution. With a dedicated team of 51 to 100 employees, SUNPLUS OPTIMUM INC is committed to empowering the solar revolution through precision-crafted, high-performance energy solutions.

SUNPLUS 15KW On-grid Solar System Kit for Home and Commercial Energy Use$1600

SUNPLUS 15KW Grid tie Solar Power System for Home and Industrial Energy Use$1600

SUNPLUS 15KW Solar Energy System with High Efficient N-Type Monocrystalline Panels for Grid-Tied Applications$1600

SUNPLUS 15KW Solar Energy System with N-Type Solar Panels for Home and Commercial Solar Use Applications$1500

SUNPLUS 15KW On-grid solar system Storage System for Home Energy Storage With 30 Years Performance Warranty$1500

SUNPLUS 15KW On-grid Solar System with Tier 1 solar panels battery storage for Residential Energy Solution$1600

Sunplus 10-30KW Complete On-Grid Solar Energy System MPPT Controller Monocrystalline Silicon Solar for Home Roof Mount$3000

SUNPLUS Premium 15KW On-Grid Solar Kit /550W N-Type PV Panels for Energy Storage in Homes & Businesses$1600

SUNPLUS 15KW On-grid Solar Power System /Monocrystalline N-Type Panels with Battery Backup for industrial energy storage$1600

SUNPLUS 15KW On-grid Solar System of Tier 1 Solar Panel with LiFePO4 Lithium Battery solar batteries energy storage$1600

CF Technologies, Inc.

🇺🇸 United States

1989

11-50 people

Manufacturer/Service Company

Established brand

OEM manufacturer

ODM manufacturer

Product customization

Shipments

Key customer

STANDARD ROLLING MILLS LIMITED

Key market

🇺🇸 United States

Description

CF Technologies, Inc. is a specialized manufacturer and engineering services provider headquartered in Boston, Massachusetts. Founded in 1989, the company is a recognized leader in supercritical fluid processing, offering turnkey systems integration and custom manufacturing for critical fluid technologies. With over 35 years of expertise, they specialize in CO2 extraction, fractionation, separation, and chromatography systems, serving a diverse clientele that includes the U.S. Department of Energy, NASA, and major research universities like MIT and Princeton. The company operates a comprehensive facility in Hyde Park, MA, featuring in-house engineering, fabrication, and welding shops. Their core product line includes ASME Code Stamped and National Board Certified pressure vessels, notably the proprietary DurOLok quick-acting closure vessels. CF Technologies provides scalable solutions ranging from bench-scale and pilot-scale extractions to full production systems. Their technical capabilities extend to the design of heat exchangers, storage tanks, and welding skids, as well as providing toll processing and process engineering consulting. As a process innovator, CF Technologies is active in sustainable technology development, including rare earth element purification and the conversion of waste streams into biofuels. The company holds an extensive patent portfolio and maintains rigorous quality standards, including ASME and CRN certifications. They primarily serve the clean technology, environmental services, and specialized machinery sectors, focusing on delivering custom-engineered solutions for complex chemical and process engineering challenges.

Aerogel systems, Extraction and Fractionation systems, parts cleaning systems

4,500 psi pilot scale research and production system with fractionation, separation and CO2 recirculation

Cannon Water Technology, Inc.

🇺🇸 United States

1985

201-300 people

Trading Company/Manufacturer/Distributor/Service Company

Established brand

OEM manufacturer

Own brand

Product customization

Shipments

Key customer

SIPROFISA SISTEMAS Y PROCESOS DE FILTRAC

Key market

North America

Description

Cannon Water Technology, Inc. is a US-based manufacturer, distributor, trading company, and service provider specializing in commercial and industrial water treatment solutions. Founded in 1985, the company operates with 201-300 employees and holds ISO 9001 certification. They offer a comprehensive range of water treatment chemicals, equipment, and services, including custom manufacturing and contract manufacturing roles. Their extensive product portfolio covers water treatment chemicals (biocides, boiler, cooling water, sanitization), various types of pumps (metering, diaphragm, peristaltic), and a wide array of water treatment equipment such as flow meters, water quality meters, reverse osmosis systems, UV light disinfection systems, boiler and cooling tower water treatment systems, chemical storage tanks, level sensors, process analyzers, filtration systems, and remote monitoring software. Cannon Water Technology, Inc. provides solutions for diverse applications including cooling towers, steam boilers, and closed hydronic systems, serving industries such as chemical processing, food and beverage, general manufacturing, metal, mining, oil & gas, pharmaceutical, and power generation. They also offer engineering and technical support, building custom solutions, and distributing products from numerous recognized brands.

Twist II Clean Filters

Alkegen

🇺🇸 United States

1891

5001-10000 people

Manufacturer/Distributor

High capacity factory

Established brand

Large enterprise group

Own brand

Shipments

Key customer

DISTRIBUIDORA REICOTEX LTDA

Key market

🇺🇸 United States

Description

Alkegen is a global leader in high-performance specialty materials, formed through the merger of industry pioneers Unifrax and Lydall. Headquartered in the United States, the company operates a massive global footprint with over 60 manufacturing facilities and a workforce of approximately 9,000 employees. Alkegen is a vertically integrated manufacturer specializing in mission-critical solutions that enhance energy efficiency, pollution control, and fire safety across diverse sectors including automotive, aerospace, energy, medical, and industrial manufacturing. The company's extensive product portfolio is organized into several core divisions. Their Battery Products include advanced in-cell solutions like SiFAB (silicon fiber anode material) and Inovion, alongside in-pack thermal barriers and electrical protection systems for electric vehicles. In the realm of insulation and fire protection, Alkegen offers industry-leading brands such as Fiberfrax, Insulfrax, and FyreWrap, providing high-temperature ceramic fiber blankets, aerogel insulation, and fire-rated enclosures. Their Filtration and Catalysis division delivers high-efficiency media, industrial filter bags, and catalytic filter candles designed to remove pollutants from industrial gases. Alkegen maintains rigorous quality standards, holding certifications such as IATF 16949 and ISO/TS 16949:2002. With a history of innovation dating back to 1891 through its legacy brands, the company continues to drive advancements in material science, including PFAS-free filtration solutions and cryogenic insulation. Their global trade network serves major international markets across North America, Europe, South America, and Asia, supporting a prestigious client base that includes global automotive OEMs and industrial leaders.

Energy Storage Systems

Sigma Thermal, Inc.

🇺🇸 United States

2007

51-100 people

Manufacturer/Distributor/Service Company

Product customization

Multinational enterprise

Eco-friendly supplier

OEM manufacturer

Shipments

Key customer

CONG TY TNHH NANG LUONG XANH IDEMITSU VIET NAM

Key market

🇺🇸 United States

Description

Sigma Thermal, Inc. is a leading manufacturer and turnkey systems integrator specializing in industrial process heating systems. Founded in 2007 and headquartered in Marietta, Georgia, the company operates a dedicated manufacturing facility and maintains a global presence with offices in Houston, India, Dubai, and the United Kingdom. Sigma Thermal provides a comprehensive range of engineered solutions, including thermal fluid heating systems, electric process heaters, direct-fired heaters, and process bath heaters. The company is also a specialist in sustainable energy solutions, offering biomass energy systems and industrial waste heat recovery systems designed to optimize plant efficiency. As an ISO 9001:2015 certified organization, Sigma Thermal adheres to rigorous quality standards, with products designed to meet ASME Section VIII, CE, UL, CSA, and PED requirements. Their capabilities extend beyond equipment manufacturing to include custom automation and safety control systems, burner management, and extensive aftermarket support such as field services, retrofits, and technical training. The company serves a diverse array of industries, including oil and gas, petrochemical, power generation, food and beverage, and aerospace. Through its family of brands, including FlareTec and GTS Energy, Sigma Thermal delivers deep engineering expertise and practical field experience to support complex industrial heating applications worldwide.

Catalyst Product Development Group, Inc.

🇺🇸 United States

1999

11-50 people

Manufacturer/Service Company

Established brand

OEM manufacturer

ODM manufacturer

Product customization

Key customer

CREATIVE PERSPECTIVE

Key market

🇺🇸 United States

Description

Catalyst Product Development Group, Inc. is a vertically integrated manufacturer and product development firm headquartered in Indianapolis, Indiana. Founded in 1999, the company operates from a 28,000-square-foot design and manufacturing center, specializing in mind-to-market solutions for diverse industries including medical devices, aerospace, automotive, telecommunications, and consumer electronics. As an ISO 9001:2015 certified organization, they provide a comprehensive suite of services ranging from industrial design and mechanical engineering to rapid tooling and injection molding. The company distinguishes itself through its 100% Made in the USA production, offering in-house creative design, materials expertise, and state-of-the-art tooling. Their manufacturing capabilities include plastic injection molding, electrical discharge machining (EDM), and additive manufacturing. Catalyst PDG is particularly adept at project acceleration, providing rapid prototyping, pilot production, and short-run manufacturing to help clients achieve faster speed-to-market. They also specialize in the development of connected devices and IoT technology, assisting clients with data collection and real-time dashboard integration. With a team of approximately 30 to 50 professionals, Catalyst PDG serves as an extension of client internal resources, having developed products for over 1,200 companies, including global brands such as Kraft Heinz, Goodyear, Eli Lilly, and ThermoTek. Their facility is equipped with multiple injection molding presses and advanced CNC equipment, allowing them to manage entire programs from initial concept and intellectual property development through to final assembly and deployment.