About Us



Underground Systems, Inc. (USi) specializes in providing engineering services and advanced technology products for electric power transmission and distribution systems and has been successfully supporting the utility industry for over 45 years. USi has the largest and most experienced technical staff in North America for underground transmission HV power cable system and accessory design and engineering.

Our technical specialists are recognized experts with extensive experience in the various aspects of underground high voltage power cable system design, installation, rating and operation. We work directly with electric utilities, power producers, cable manufacturers, high voltage cable installation and service companies, architect engineers and high voltage transmission cable asset operators to provide advanced solutions and engineered products to optimize the operation and performance of their power cable system assets.

Company Offices & Laboratories

Corporate headquarters for USi are located in Bethel, Connecticut. In-house computer systems incorporate the latest equipment and techniques, capable of providing complete user facility management services including real-time data acquisition, daily data repository backup services, and detailed on-line and off-line data analysis for numerous utility companies. Our modern facilities include manufacturing and testing facilities in Bethel, CT, Milford, CT, and Randolph, NJ, and a satellite office in Ronkonkoma, NY.

USi’s manufacturing, research and testing facility in Milford, CT houses a well-equipped electrical testing and chemical analysis laboratory for gas, fluid, and solid dielectrics. The laboratory also performs high voltage and mechanical testing, as well as dissolved gas in oil analysis and soil thermal property testing.

About Us
3A Trowbridge Drive,
Bethel, Connecticut
06801 USA
Tel:  +1.203.792.3444
Fax: +1.203.792.3454

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