Hospitals, colleges, schools and other institutions have their own unique set of needs and demands when it comes to electrical systems.

Hospital administrators, purchasing managers, engineering supervisors are always looking for ways to slash their operating costs. They’ve trimmed maintenance staffs and are looking for products that require less maintenance, last longer and cost less to install.

Lighting equipment, motors and other electrical loads can account for over 30% of a building's energy usage. We can help you and your customers benefit from energy-efficient retrofits, often saving tens of thousands of dollars a year with a two- to four-year payoff.

You can also turn to Dominion Electric for information about code compliance, plus GFCI equipment, back-up generators, data handling systems, and low-voltage wiring systems for intercoms, fire alarms, security systems, and smoke detectors.

And when it’s time to get the job done, we can help you save time and reduce labor costs with our job site cart and floor-to-floor solutions, while making  your job a little (or a lot) easier.

With an inventory of more than $26 million, 250 brands, and 1,000 vendors, we can get you the parts you need, when and where you need them, and at the right price.

Our fleet of 34 vans, trucks and flatbed delivery vehicles leave every weekday morning between 4 and 6 a.m. to deliver product throughout the D.C.–Maryland-Virginia area. Or you can stop by one of our 10 counters or three lighting showrooms on your way to the office or the jobsite. Click here for a list of locations.

Related Products


Voltage Drop

Helps determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an electrical circuit.

Configurator Plus™
Web App

Save by switching to LED. This tool uses the bulb you have now to calculate potential savings and offers an energy-efficient LED alternative.

Conduit Fill

Conduit Fill is the percentage of area inside the conduit taken up by the cable(s). Get quick and easy results per NEC® guidelines.

SIMpull® Cable
Pull Calculator

Helps to estimate and manage cable installation projects. Provides the ability to alter data that indicates tension or sidewall pressure.

MCAP® Cost

Quickly and easily illustrates the potential labor cost savings when using MCAP® cable in place of traditional MC cable.

Hubbel Twist-Lock®

Quickly identify and choose a specific Twist-Lock device and view related products. Detailed product information is available.

Submittal Builder

Browse or search for products to add, create a list, and use it to create a submittal. Share your list by email, or add it to your shopping cart.

Kellems® Gripulator®

Identify and choose a specific Kellems Mesh Grip, Cord Connector or liquidtight product. Detailed product information is available.

Wire Bundle
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Determines the wire bundle outside diameter when using wires of different sizes. Provided by MB Cable Company of New Jersey.


George Mason Science Building

Potomac High School

Ft. Belvoir Hospital – Twilight

Ft. Belvoir Hospital – Lobby

Eastern View High School – Gym

Riverside Doctor’s Hospital

Eastern View High School – Auditorium

Duke Ellington School of the Arts – Exterior

Duke Ellington School of the Arts – Interior

Duke Ellington School of the Arts – Theater

Children’s Hospital OR


Dominion Electric Supply Company, Inc. serves a number of markets. Click a photo for more information plus links to product groups, calculators and tools (apps), manufacturers, and projects.

Nestle Building w Permission

Commercial Construction

Offices, factories, warehouses, retail

Residential Market

Residential Construction

Houses, apartment buildings, condos



Schools, colleges, hospitals, clinics

White House


Government buildings, structures

Spy Museum

Recreation & Leisure

Parks, hospitality, private museums

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