Affiliated Businesses

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Tech Pro Power Group

Established in 2019, TechPro Power Group is a family of best-in-class companies providing electrical, instrumentation and control testing and start-up and commissioning services as well as electrical test equipment rental, sales, calibration and repair to the power, oil & gas, process industries and other industrial end markets. Its holdings include Technical Diagnostic Services, LLC (TDS) and Potomac Testing, Inc.


Potomac Testing

A TechPro Power Group company, Potomac Testing, Inc., established in 1985, has earned its position as the mid-Atlantic leader in comprehensive low and medium voltage electrical equipment services: from NETA acceptance and maintenance testing, planned and emergency field services, power quality and engineering studies, to retrofitting and refurbishment of electrical equipment.


Sentinel Power Services

Sentinel Power Services, Inc. was founded in December 1998 as a breaker repair shop for industrial clients in the greater Tulsa, Oklahoma area. In 2002 Sentinel transitioned to being a solutions provider by expanding its capabilities to include electrical equipment testing, commissioning, and troubleshooting, as well as large motor expertise. Sentinel continued to evolve by adding full-service engineering capabilities. Sentinel was acquired by TechPro Power Group in 2022 not only expanding geographical reach, but service and engineering capabilities.