Harris Electric expanded again in the late 1930s when Vic Sundholm joined the firm. Soon, industrial design and large vessel wiring emerged as two other services for which Harris Electric became known.

Hatzel & Buehler was one of the first electrical construction companies in the US. The firm provides electrical design, construction, engineering, integration, and maintenance services. Projects range from simple service calls to complex, multi-phased design-build projects nationwide.

Hawkeye Electric is a commercial, residential, and industrial electrical contractor located in Cedar Rapids and Dubuque, Iowa.

Hayward Tyler designs, manufactures and services performance-critical electric motors and pumps for high-pressure, high-temperature applications in the harshest environments across the global energy industry.

Helios Electric delivers tailored solutions to meet their complex needs during all phases of electrical engineering and construction. Utilizing over 30 years of experience in industrial, utility, commercial, and mission-critical systems, they recognize the needs of discerning customers and know what it takes to get the job done right for them.

Hellman Electric Corporation is one of the metropolitan region's largest heavy construction commercial and industrial electrical contractors. The firm is a member of the International Brotherhood of Electrical Workers, Local Union 3, and is recognized as a pioneer in electrical construction for heavy construction projects.

Hexagon Energy is an independent energy development firm. We believe that the path to a clean energy future requires a range of new sources and technologies. They develop projects across six diverse energy solutions with one common goal—powering a clean future.

HIGHPOINT ELECTRIC are a commercial and industrial contractor dedicated to providing the best in electric installations, engineering, construction, controls and communications throughout Michigan. Because they are exceptionally well diversified, they can provide clients with total turnkey electrical solutions through their expertise in engineering, construction, controls and communications.

Hilscher-Clarke Electric Company is a full-service electrical contractor, with more than 100 years of experience in the commercial, industrial, and residential markets

HIPOWER SYSTEMS builds and customizes backup generators, diesel generators, natural gas generators, and alternative bi-fuel generator sets from 8kW to 3MW with a complete range of accessories, including automatic transfer switches, paralleling switchgear, UL tanks, enclosures, and power distribution equipment.

Hitachi commits to helping achieve a sustainable world and people's well-being by utilizing their breadth of digital and green technologies. Since its founding in 1910, Hitachi has responded to the expectations of society and its customers through technology and innovation. They work to apply their expertise in information technology (IT), operational technology (OT), and a wide variety of products to advance social infrastructure systems.

Hitachi Industrial Equipment creates synergies among Industry related business units and promptly offers one-stop solutions to dynamic market changes along with the diversification in demand that is taking place in the Americas.

Hitachi-Comark is a highly specialized company with more than 50 years of continuous activity and experience in the field of high power RF Technology.

Hitachi Vantara are a globally renowned company in powering global, mission-critical digital and industrial environments. They guide customers from what’s now to what’s next by solving their digital challenges. Services provided include - Enterprise Storage Solutions, Internet of Things, Big Data, Flash Storage, Cloud Infrastructure, Content Mobility, Digital Transformation, and Storage Software Solutions.

HoloBuilder, Inc. is a San Francisco-based construction technology company that designs, develops, and sells enterprise SaaS software. HoloBuilder offers reality-capturing solutions for progress documentation and construction project management.

Homer Electric Association, Inc. (HEA) is a member-owned electric utility serving the central and southern areas of the Kenai Peninsula in Alaska. The Cooperative provides affordable, reliable, quality energy services to its members and is governed by a nine-member elected Board of Directors.

Honeywell is a Fortune 100 company that invents and manufactures technologies to address tough challenges linked to global macrotrends such as safety, security, and energy. With approximately 110,000 employees worldwide, including more than 19,000 engineers and scientists, it has an unrelenting focus on quality, delivery, value, and technology in everything it makes and does.

Horsepower Electric has grown into one of the tri-state region’s largest and most established electrical contracting powerhouses.

By combining our estimating experience with our in-house Engineering Department, Howell is able to provide the highest quality electrical construction for the most efficient cost in the shortest construction schedule possible.

HSI Sensing provides custom and standard switching and sensing solutions. HSI Sensing manufactures reed switches and proximity sensors. These devices complete electrical circuit paths when magnetism is placed close to the switch or sensor. Their production process is precise and known for making the most difficult types of switches.

Hubbell Commercial Construction brands provide innovative and cost-effective electrical products with superior customer service for commercial, industrial, MRO, OEM, and residential markets.

Hugh O’Kane Electric Company has delivered telecommunications installation, electrical maintenance services, and electrical contracting for businesses and institutions in the New York City area. HOK’s technicians are knowledgeable about NYC’s electric and telecommunications infrastructure, and the expansion of 5G and Wifi services in NYC.

Huston Electric, Inc. is a privately owned, fourth-generation, full-service electrical contracting company with divisions specializing in design-build and service work. Huston Electric, Inc. has three locations, Kokomo, Westfield and Lafayette, IN, to better serve our customers. Huston Electric, has three other Divisions, Huston Sign & Services, Huston Technologies and Huston Generator and Compressors.

Hutaib Electricals are Pune-based manufacturers, supplier, and exporter of outstanding variety of cable trays, raceways draw boxes & industrial fabrications. The company has expertise in manufacturing products like perforated cable trays, ladder type cable trays, trunking cable trays / raceways, basket trays / wire mesh cable trays, junction boxes, raceways boxes and their accessories, such as bends, elbows, tees, cross, reducers, and many more.

Hyliion is committed to creating innovative solutions that enable clean, flexible and affordable electricity production. The company’s primary focus is to provide distributed power generators that can operate on various fuel sources to future-proof against an ever-changing energy economy.

Hypower is a general contractor specializing in commercial and industrial electric, electrical service, and utility contracting. The company works with some of the general contractors, utilities, developers, and institutions in the United States.

At IDE Electronics International they have been working in the automation industry for more than 30 years.

IES designs and installs integrated electrical and technology systems and provides infrastructure products and services to a variety of end markets, including data centers, residential housing, and commercial and industrial facilities.

Igarashi Motors specializes in the design and manufacture of small, permanent magnet DC motors and gear motors. For over half a century, Igarashi Motors has been dedicated to providing quality product and service to the customers.

At IEC, they work hard for their members and the communities they serve. They support their 38-member distribution cooperatives with an array of services that include job and safety training, government relations, regulatory compliance support, professional development training, and communication.