The Preferred Manufacturer of Grid Solutions in the USA

The largest, American-owned medium transformer manufacturer in North America providing superior, innovative client solutions.

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Years of experience in Engineering and Manufacturing


Years of service from Delta Star’ current, longest serving employee


Inventions patented through Technological Advances

Superior Components, Engineering, & Service



We Design And Manufacture Our Critical Components In-House.

  • Tank Fabrication
  • De-Energized Tap Changers and Switches
  • Preventive and Series Autotransformers
  • Control Cabinets
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Industry-Leading Expertise & Software

  • TRDO
  • ELMAG-3D
  • TELAX-2D
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Field Service

Our Field Service Team Can Service All Your Equipment

  • 50 Techs with 300+ combined years of experience
  • Service any manufacturer’s equipment (765kV and below)
  • Trained in accordance with OSHA requirements
  • Multiple locations to ensure service call support
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Delta Star Advantage

Delta Star is an industry leader providing superior, innovative client solutions that meet the energy needs of the future.

The Leader In Mobile Power Solutions

Delta Star is the premier manufacturer of mobile substations, recognized for their unparalleled compact, durable and reliable over-the-road design.

Critical Infrastructure Support

National Defense

Department of Energy Report

Providing Peace of Mind

Our work supports the functions of critical infrastructure for public health and safety as well as community well-being.

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Powering National Security

If a single Delta Star mobile substation can keep a U.S. fighting force up to full power, imagine what we can do for you.

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Rapid Restoration of Electric Service

The Department of Energy has reported that MTS systems serve a vital role in protecting the Nation’s electrical infrastructure.

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