High-voltage substation construction and transformer installation through 500kV across the Western United States.
For nearly five decades, ESS International has been one of the most highly respected electrical substation contractors in the West. Hundreds of successful projects for some of the largest utilities in the country.
ESS International Corporation, Electrical Substation Specialists, has been one of the most highly respected electrical substation contractors in the western United States since 1978. We build substations through the 500kV level and install extra-high-voltage apparatus, including large power transformers, for electric utility companies across 17 states.
We have completed hundreds, if not thousands, of successful projects for some of the largest utilities in the West. Our work spans greenfield substation construction, transformer installation and servicing, and complete decommissioning of retired equipment.
We only build one way, with an uncompromising focus on safety, quality, and precision. When failure isn't an option, utilities call ESS.
From greenfield construction to decommissioning, we deliver complete substation solutions at every voltage level.
Complete greenfield and brownfield substation construction from 69kV to 500kV. Steel erection, bus work, equipment installation, grounding, conduit, cable, and commissioning.
Field assessment, on-site oil reconditioning with a mobile degasifier, and servicing, plus EHV installation up to 600MVA at the 525kV class.
Turn-key removal, recycling, and disposal of retired electrical equipment. Complete site remediation and environmental compliance.
Substations for industrial facilities, data centers, mining operations, and large campus environments requiring dedicated high-voltage service.
From rural utility expansions to the largest infrastructure projects in the West, ESS delivers substation construction at every scale.
We've built substations for the West's largest electric utilities since 1978. Deep relationships across every major service territory in the region.
From 69kV distribution substations to 500kV transmission, the highest voltage class in the Western Interconnection, we build at every level.
From Arizona to Washington, we mobilize across the West. Industrial campuses, data centers, renewable interconnection, defense installations.
Whether it's a new build, expansion, transformer install, or decommissioning, we've done it before and we deliver on schedule. Let's talk about your project.
From the desert Southwest to the Pacific Northwest, ESS has built substations and installed transformers for utilities across the entire western grid. Our teams mobilize to wherever the work is, and we've been doing it since 1978.
Our deep familiarity with western state regulations, utility interconnection requirements, and regional permitting processes means fewer delays and faster energization.
A sampling of completed projects. Hundreds more across nearly five decades of continuous operation.
"We only build one way, with a focus on quality and safety. That's why our client list contains some of the biggest names in the industry."
ESS International Corporation