Corporate Headquarters:
1765 Greensboro Station Pl.
Tysons, VA 22102
Office: (703) 802-6231
Fax: (703) 421-4670

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M.C. Dean, Inc. offers the industry's most comprehensive package of Energy Services, drawing from over fifty years of experience in the design, construction and maintenance of all levels of power systems. This extensive experience enables us to provide system solutions to clients of all sizes and complexity.

Our capabilities include:

Power Systems Construction
Critical Power
Power Systems Testing and Maintenance
Solar Power & Off-Grid Power Systems

M.C. Dean, Inc. boasts vast experience in the construction of complex power distribution systems. M.C. Dean, Inc. has the proven background and ability to provide assistance with all levels of design and the complete implementation of construction and maintenance projects. Our capabilities in this field include:

High Voltage Line Construction
Substation Structures
Switchgear Installation, Replacement, & Retrofit
  Oil, Vacuum, SF6 Breakers
Transformer Installation & Replacement
  Oil, Silicon, Cast Coil Dry Type
  Network & Loop Type
Bus Duct Feeders
Electronic Metering
Advanced Relaying & Supervisory Schemes

As a part of our high voltage services, we offer the complete installation, splicing, termination and testing of high voltage cabling systems of all insulation types, including lead splices and potheads. Our cable installers are factory-trained and certified to perform both splices and terminations up to 35 kV. Furthermore, we own and operate our own aerial and underground cable installing machinery and equipment.
M.C. Dean, Inc. is also qualified to work with PCB Transformers. Our experience with industrial power distribution projects lead M.C. Dean, Inc. to be one of the industry pioneers in the removal and replacement of PCB contaminated transformers. We have performed or managed all facets of this work since 1983, and we are proud of our reputation in the removal, replacement, remediation, disposal, flushing and retrofilling of PCB contaminated electrical equipment. Furthermore, we are knowledgeable of and strictly adhere to the EPA regulations regarding these hazardous substances.

Additionally, M.C. Dean, Inc. performs a variety of lighting services including indoor, outdoor and specialty lighting projects. M.C. Dean, Inc. can design lighting systems to meet individual facility or client needs.

Outdoor Lighting
  Athletic Field Lighting
Airfield Lighting
Runway Series Loops
Taxiway Guidance
Aircraft Approach Lighting
Parking Lot Lighting
Street Lighting
High Mast Highway Lighting
Ornamental Street Lighting
Electrical Signage

Specialty Lighting
  Exhibit Lighting
Theatre Lighting
Landscape Lighting
Accent Lighting
Advanced Lighting Control
Photoelectric Daylight Dimming
Motion Sensing
Capacitance Sensing
Computer Controlled
Energy Saving Upgrades
Shared Savings & Rebate Programs

M.C. Dean, Inc.'s Critical Power Group's expertise includes engineering, installation, proactive preventive maintenance and design/build services.

The Critical Power Group provides the expertise and services to ensure the integrity of mission critical systems by understanding customer needs and operations. Our menu of services is aimed at ensuring continuous uptime, preventing disruptive and costly outages, and providing effective data center infrastructure support:


Uninterruptible Power Supply Systems (UPS)
UPS and Related Power Equipment Installation
UPS Start-Up & Testing Services
UPS Engineering Specifications
UPS Preventive Maintenance Services
Power System Analysis
UPS Power Quality Surveys and Measurements
Coordination Studies
UPS Emergency Response and Troubleshooting
Professional Engineering Services


M.C. Dean, Inc. maintains a staff specializing in the engineering, testing and maintenance of electrical systems. Every inspection and testing is documented and quality assured by technicians who stand ready to perform any emergency repair services. M.C. Dean, Inc. can dedicate full-time technicians to clients when necessary. The company offers:

  Circuit Breaker Testing & Analysis
Insulating Liquid Sampling, Testing & Analysis
DC Testing of Transformers
AC Testing of Transformers
Gas Testing
Relay Testing & Calibration
System Ground Testing
Cable & Splice Testing - AC/DC Hi-Pot & Megger
CoGeneration System Testing
Testing & Maintenance of Storage Battery Systems
Infrared Scanning
Power Factor Testing & Analysis
Custom Maintenance Programs

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