United States
Transformers & Switchgear
in Chicago.
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 Chicago. 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.
Chicago is supplied by ComEd (Commonwealth Edison, Exelon subsidiary) on a 12/34.5 kV MV grid stepped down from 138/345 kV transmission. ComEd serves 4 million customers across northern Illinois, with Chicago itself driving demand through the downtown 'Loop' high-density network — one of the few US cities still operating a 4 kV legacy network alongside the modern 12 kV system. Procurement is shaped by the O'Hare International Airport modernisation programme, the Lincoln Yards and 78 development corridors, the Climate & Equitable Jobs Act mandate (100% clean energy by 2050) driving distribution-network upgrades, and the data-centre cluster in Aurora and Elk Grove Village. Specifications follow IEEE C57.12.00 / C57.12.34 with ComEd's PA-PR-1 material spec adding low-noise NEMA TR-1 Level B limits for urban units, partial-discharge testing and PCB-free certification. Tender hints: ComEd procures via Exelon's central sourcing organisation; multi-year framework agreements dominate.
Utility partners in Chicago
Other markets in United States
Nearby cities we serve.
Product catalogue
Recommended products for Chicago.
A curated portfolio of transformers and switchgear matched to local utility specifications, standards and project drivers.
Frequently Asked Questions — Chicago
For projects in Chicago, 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 ComEd 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 Chicago?
Regionally compliant transformers and switchgear delivered to Chicago with witnessed FAT and on-site commissioning.