Great Southwestern Construction has been building substations for the last 30 plus years. Our team of highly experienced project managers, operations personnel and field superintendents work cohesively to ensure that your project is done on time and meeting our high quality standards . We have the right people to design, procure material and construct your substation project.

Xcel Energy Projects
Colorado, New Mexico, Texas

Great Southwestern Construction has performed numerous substation and switchyard projects for Xcel Energy throughout Colorado, New Mexico and Texas. Whether it has been new construction or an addition, we have built stations ranging from 69kV to 345kV to the utmost satisfaction of one of the largest utilities in the Western US.

TIC – The Industrial Company
Beatrice 115kV Substation
Nebraska

This design/build 115kV substation project was for a 250MW natural gas fired combined cycle power station consisting of low profile steel structures and air-insulated electrical equipment connected in a four bay 11 circuit breaker, 1 ½ breaker substation with four outgoing transmission line circuits, one incoming steam turbine generator circuit and two incoming combustion turbine circuits and revenue metering for
electrical output. From our initial design through commissioning, this project required close coordination with the Public Utility to meet specified design criteria and critical completion date and included site work, foundations, substation equipment and controls.

Northern Rio Arriba Cooperative, Inc.
Tierra Substation
New Mexico

Great Southwestern assisted this coop in their first design/build substation. A successful project was accomplished through many hours of informative communication and teamwork with the owner, engineer and project developer. This 69kV/25kV substation included switches, breakers, transformer, switchgear, steel, associated buswork, jumpers, control cable, control building, concrete foundations, fencing, site work and two miles of 69kV double circuit transmission line.

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Switchyards

Public Service Company of New Mexico
Belen Switching Station
New Mexico

This design/build 115kV switching station consisted of engineering and construction of a new substation alongside an existing substation with sequential tie-ins of existing and new transmission lines. The design was a four breaker ring bus station including all foundations, fencing, complete mechanical construction of the station, testing and commissioning. The existing substation was later decommissioned as part of this project.

Under a separate contract Great Southwestern Construction built 2.4 miles of 115kV transmission line servicing this substation which included double circuit 115kV with 795 ACSR conductor on steel poles, direct embed and pier foundations.