Dashiell is a leading national provider of high and medium voltage electrical services to the electric utility, power generation, industrial, and renewable energy industries.

Day Electric is a National Leader in Commercial Solar Repowering and O&M. They are a family-owned and operated Solar O&M provider in the Central Virginia region with almost 2 decades of experience.

Daylight Electric has a commitment to completing the electrical project on time and within the budget, while providing only the highest quality workmanship to their own exacting standards. They offer the clients prompt, professional and friendly service on all types of electrical projects.

Decatur Industrial Electric provides electro-mechanical repair solutions to a variety of industries throughout the Midwest. They pride themselves on being a strategic partner in reliable solutions to the customers; they understand when a plant has unplanned production downtime it can cost hundreds of thousands of dollars.

Decker Electric is an electrical contractors in Wichita, Kansas providing residential, commercial, and industrial electric service. The company was founded more than thirty years ago with the belief that treating customers well and providing the highest quality service is how to cultivate long term business relationships

Delco Electric Inc., a family owned and established in 1979, is an award-winning commercial electrical contractor, specializing in negotiated design build and design assist projects of any size. With over 35 years of experience in the construction industry, Delco Electric has assembled a team of dedicated professionals to become one of Oklahoma’s premier electrical contractors.

Delphian Systems invented SecuRemote® technology as a response to OEM needs for eliminating the complexity of adding secure mesh networks and mobile/cloud connectivity to existing products. They combine powerful technology with user-friendly software to create simple, secure, and complete wireless solutions for diverse IoT applications.

Deltrol Corp. is a world leader in the development and manufacture of electromechanical controls and hydraulic systems and components. The organization's business units are structured into three divisions, Deltrol Controls, Deltrol Fluid Products, and Fluid Power and Controls Co., Ltd.

Detroit® is the industry-pioneering original equipment manufacturer of state-of-the-art engines, axles and transmissions specifically designed for integrated, optimized performance and efficiency inside Freightliner and Western Star Trucks. The Detroit® product portfolio has expanded to include advanced safety systems and telematics, delivering a total trucking solution.

Denier know them as a people-oriented company. Family owned and operated since 1942, they put a great deal of care in the selection and training of each employee. Their partnership with the users is a trust that only bright, motivated, experienced individuals can guarantee.

Denney Electric Supply was founded in 1938 on simple principles: fast, friendly service for residential, industrial, and commercial contractors.

DENT Instruments designs and manufactures data loggers and energy meters for today's energy professionals. Their products are often the first step in developing strong energy strategies, for maintaining peak operations, and for lowering operating costs.

Design Electric, Inc. is an electrical contractor serving the Central and Western Virginia area. As such, they provide electrical construction and maintenance services, primarily for commercial, institutional and industrial clients.

Devard's Air Conditioning & Heating, Plumbing and Electrical offers affordable, reliable, energy-efficient, commercial and residential plumbing, air conditioning, heating and air conditioning units for the Dallas - Ft. Worth area with their '100% customer satisfaction policy', which is their company motto and what has led to their success.

Diamond Electric Mfg. Corporation is recognized as a globally renowned company in safe, reliable and cost competitive automotive electrical components.

Diodes Incorporated is a renowned global manufacturer and supplier of high-quality semiconductor products to the world’s major companies in the automotive, industrial, computing, consumer electronics, and communications markets. Their broad range of application-specific solutions and solutions-focused sales, coupled with worldwide operations of 32 sites, includes engineering, testing, manufacturing, and customer service,

Direct Energy gives customers choice, simplicity, and innovation where energy, data, and technology meet. They make energy work harder for home and business customers across North America. They empower customers with simple solutions to track, understand, and control the electricity and natural gas they use.

DEP is pioneering a sustainable future that is accessible and affordable to businesses of all sizes. Its focus on local energy generation, a direct current (DC) backbone infrastructure, and DC loads produce systems that are more resilient, reliable, and energy-efficient than any others on the planet.

Dispel LLC is a developer and distributor of secure remote-access and operational-management solutions. Dispel products are designed to supercharge every aspect of the facility operations. The Dispel Zero Trust Engine will help them grow, secure systems, and deliver more units at a lower cost, with products that achieve goals even faster when used together.

Electric cooperative serving over 38,000 accounts in 7 counties including Jones, Jasper, Forrest, Wayne, Perry, Covington, and Clarke. The association provides reliable and affordable electric power to its members. The association is governed by a seven-member board of directors and has 92 full-time employees.

DKD Electric has committed to providing the highest level of expertise to its customers. As a pioneer in the electrical contracting industry, they have set the standards with their highly skilled team and vast amount of experience.

Dominion Electrical Supply Company, Inc. has providing electrical contractors, remodelers, building managers, and homeowners with electrical supplies, switchgear solutions, commercial lighting, residential lighting, and more. Family-owned and operated by the Sharlin and Krooth families, Dominion strives to be the electrical distributor of choice in the D.C. metropolitan area.

Dominion Energy is committed to sustainable, reliable, affordable, and safe energy and to achieving net-zero carbon dioxide and methane emissions from power generation and gas infrastructure operations by 2050.

DP Electric (DPE) has a long history as a dedicated trade partner. The company, founded by Dan Puente in 1990, has become one of the leading, full-service electrical contracting firms in Arizona. DPE has developed markets and technologies to become a pioneer in Aviation, Corporate Office, Healthcare, Mission Critical, Hospitality, Higher Education, Medium Voltage, and Renewable Energy.

Dreisilker Electric Motor and Appliance Service by Henry Dreisilker , the company specialized in commercial motor repair and sales. As the business grew Mr. Dreisilker re-focused the core competency of the business towards industrial large scale motor re-manufacturing.

Dremel has developed a number of high speed corded and cordless Rotary-Tools. Every tool has specific features that makes it unique in its class. Dremel has been empowering creativity since 1932 by building intuitive products and an ecosystem of versatile solutions that are trusted, ingenious and of persistent quality.

DRM Electrical is Milwaukee's choice for electrical contractors for construction, repair work, cabling, networks and inspections. They meet the needs of their clients for every project by working hard and use their years of industry experience.

DTE Energy is a Detroit-based, diversified energy company involved in the development and management of energy-related businesses and services nationwide. Built on a strong utility base, DTE Energy's largest operating subsidiaries are DTE Electric and DTE Gas. Together, these regulated utility companies provide electric and/or gas services to more than three million residential, business, and industrial customers throughout Michigan.

Duke Energy is one of the energy holding companies in the United States. Its Electric Utilities and Infrastructure business unit serves approximately 7.5 million customers located in six states in the Southeast and Midwest. Their Commercial Renewables business unit operates a growing renewable energy portfolio across the United States.

Founded in 1960 in Rochester, New York, Dynalec's first product was a ship’s entertainment center manufactured for the U.S. Navy. In 1973, as customer demand and product line grew, they moved 35 miles east to larger facilities in Sodus, New York, located in the Northern tier of New York’s famous Finger Lakes region.