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About Us

CapitalTristate provides electrical products, lighting, and services to contractors, builders, and end-users in the Mid-Atlantic States. We service our customers from 43 locations throughout Maryland, Pennsylvania, West Virginia, and Virginia and from our new 220,000 square foot headquarters and CDC in Upper Marlboro, Maryland. Our mission is to be the electrical distributor of choice.

Our Commitment

CapitalTristate delivers excellence in service, products from the finest manufacturers of electrical products, and extensive application expertise. We are built on the fundamental concept of being the best at those things that are important to the success of our customers and their customers. By making CapitalTristate a good place to work, we attract, grow and retain extraordinary people who are the best at what they do and who enjoy doing it.

An Invitation

We invite you to take the time to visit the other sections of our site. There you can learn about the services we provide, examine the products we distribute, open an account and contact the people who do it. And, if you are interested, you can explore the opportunities available for energetic, motivated people at CapitalTristate.

Thanks for the time you have spent with us. Please come back.  

Sonepar Code of Conduct 

"Compliance is everyone's responsibility at Sonepar, every day in everything we do."

- Philippe Delpech, CEO of Sonepar