United States
Transformers & Switchgear
in Seattle.
ETS delivers IEEE C57-compliant power transformers, distribution transformers, switchgear and package substations to utilities, EPC contractors, oil & gas operators, renewable developers and data-centre projects across Seattle. Triple-certified manufacturing (IEC, ANSI/IEEE, UL) supports utility-grade procurement with witnessed FAT, ISO/IEC 17025 testing and turnkey delivery.
Market context
Local grid, utilities, climate and procurement.
Seattle is supplied by Seattle City Light (SCL) — the 10th-largest publicly-owned utility in the US and the first major US city utility to achieve carbon-neutral electricity (2005, sustained). SCL operates 13.2/26.4 kV at MV and 115/230 kV at transmission, with bulk supply from Skagit and Boundary hydro complexes (1,200 MW combined) and BPA federal hydropower. The grid runs in the Western Interconnection's Pacific Northwest sub-area. Demand drivers include the Microsoft and Amazon HQ data-centre clusters, the Port of Seattle shore-power conversion (eliminating diesel APUs at all cruise/container berths by 2030), Sound Transit Link light-rail traction, and the Boeing Renton/Everett facilities. Specifications follow IEEE C57.12.00 with SCL's pad-mount Standard 6014 (stainless-steel enclosure, IEEE C57.12.28-tamper-resistant), copper windings and ester-fluid mandatory for vault installations. Coastal salt-fog and high rainfall (940 mm/yr) drive C5-M corrosion class. Tender hints: SCL uses a closed QPL — pre-qualification requires three Pacific Northwest reference projects.
Utility partners in Seattle
Other markets in United States
Nearby cities we serve.
Product catalogue
Recommended products for Seattle.
A curated portfolio of transformers and switchgear matched to local utility specifications, standards and project drivers.
Frequently Asked Questions — Seattle
For projects in Seattle, ETS quotes 16–20 weeks for distribution transformers (11–33 kV, up to 5 MVA) and 22–28 weeks for power transformers (33 kV and above, up to 60 MVA), inclusive of witnessed Factory Acceptance Testing to Seattle City Light specifications and ex-works delivery. Express slots are sometimes available for repeat customers — confirm at quote stage.
Operating elsewhere?
See our markets in other regions.
Procuring for Seattle?
Regionally compliant transformers and switchgear delivered to Seattle with witnessed FAT and on-site commissioning.