Underground Systems

Underground Systems has been a leader in engineering services and advanced technology products for electric power transmission and distribution systems for over 45 years. Our expertise spans underground high-voltage power cable system design, installation, rating, and operation, supported by the largest technical staff in North America dedicated to this field. We collaborate directly with electric utilities, cable manufacturers, and asset operators to deliver engineered solutions that optimize grid reliability and capital utilization. Our Bethel, Connecticut headquarters houses state-of-the-art facilities for computer systems, real-time data acquisition, and comprehensive testing, including electrical, chemical, and mechanical analysis. With manufacturing and testing locations in Connecticut, New Jersey, and New York, we provide turnkey solutions from specification and design to emergency maintenance and R&D.

Our commitment to innovation is demonstrated through pioneering technologies like dynamic ampacity ratings, real-time monitoring systems, and advanced pressurizing plants. We maintain rigorous quality control programs and offer specialized training to ensure clients maximize system performance and longevity. Our technical disciplines cover heat transfer, fluid dynamics, electrostatics, and integrated systems, enabling us to address complex challenges in underground power delivery. With a proven track record in critical transmission circuits and 24/7 emergency response capabilities, we serve as a trusted partner for utilities seeking to enhance system performance and asset lifecycle management.