The Leader in Turnkey Unitized Substations

Delta Star unitized substations are manufactured in North America and custom-engineered for a wide range of equipment and ratings options providing utilities with greater capability and operating flexibility. Built for fast deployment and industry-leading reliability, our unitized substations feature best-in-class designs and components.

  • Self-contained, compact design
  • Robust, lightweight construction
  • Designed for maximum efficiency and reliability
  • Arrive fully assembled and ready to install
Unitized Substations Engineered for Multiple Applications
Engineered for resiliency and performance, our unitized substations are equipped to handle a broad range of applications and environments.
Emergencies & Planned Outages
Maintain power to customers during any emergency or scheduled outage.
Seasonal & Temporary Loads
Meet increased energy demand and protect against asset overload.
Special Projects
Provide power on demand for projects, maintenance, integrations or industrial customers.
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Our Substation Capabilities

TYPE MVA (TOP RATING) HV kV
Unitized Substations <100 25-230
Auto Transformer <100 15-230
Voltage Regulator 7 5-69
HV Circuit Trailer - <230
HV Breaker Trailer - <230
LV Breaker Trailer - <69
Cable Reel Trailer - -
Capacitor Bank Trailer - -
Related Mobile Solutions
Beyond mobile substations, Delta Star offers a complete lineup of made-to-order mobile solutions designed to maximize uptime and provide utility support
Mobile Substations
Deployment-ready substations mounted on trailers or skids that combine peak performance with easy mobility.
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Trailer Solutions
Circuit switchers, breakers, switch gear and other auxiliary support mounted on heavy-duty trailers and built to your specifications.
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Field Service
Our expert field technicians offer rapid response times and nationwide coverage on installation, maintenance and repair projects.
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