Substation Construction

We offer complete design build services for your substation project

Sentry’s engineering, construction, and supply systems provide our customers with the safest and most cost effective substations built with efficiency, environmental responsibility, and quality. We have multiple crews specifically dedicated to substation construction. While providing superior service, we also maintain a safety culture which guarantees the safety of all workers and surrounding communities. We proudly serve utility companies, electric cooperatives, and municipalities.

Sentry Electrical Group offers complete design build services for your substation project. Our team members work closely with the interconnecting utility to fully understand the requirements for physical interconnection, relay and protection, and communications.

Project managers spend initial time up front to better understand the customers needs and safety considerations to ensure the adequate level of design and redundancy is included in the overall design. Our procurement department performs a manufacturing review of the design as it is developed so that steel and equipment are optimally manufactured.

During and After Construction

During construction, our safety advisors and site inspectors complete multiple safety and quality assurance checks to help the construction flow smoothly and to make sure the substation will successfully perform as designed throughout its expected useful life.

Once construction is complete, each piece of equipment is field tested and checked to make sure all connections are properly installed and the equipment is safely and properly functioning.

The collaboration of engineering, construction and material suppliers provides our customers with the safest, most efficient, and cost effective substations.

Our Services Include

Greenfield construction

Substation upgrades

Up to and including 345 kV construction

Full service including testing and commissioning

Foundation construction

Trenching and conduit

Complete design build services

Constructability review

Manufacturing review

Quality assurance checks

Field testing all equipment

Connection and functionality verification

Commissioning of high-voltage substations and related equipment

Construction services to utilities, municipalities, electric cooperatives, and industry

Substations up to 345 kV.

Substation design/build and upgrades

GIS, SVC, and HVDC installation

Steel erection and bus welding

Installation of equipment, including switches, metal-clad switches, circuit breakers, instrumentation, SCADA, and control panels

Power transformer relocation, assembly and degasification

24/7 emergency and storm response

Substation interconnections from civil and foundations to control and protection systems

Utility switchyards

Transmission interconnects