🇺🇸 Transformer Industry — United States

The US is a massive, 60 Hz market in the middle of a transformer supply crunch. Grid hardening, renewables, data-centre load growth and ageing infrastructure are driving demand for both liquid-filled and dry-type distribution and power transformers, with a strong emphasis on ANSI/IEEE compliance and short lead times.

Grid & utilities

Confirmed manufacturing plants & facilities (15)

+5 more sourced plant records in this market.

Transformer manufacturers

50 manufacturers tracked in the United States census — the same unique-company count as the figure above. All United States manufacturers →

+36 more on the country page.

Current tenders & procurement (6)

• Mankato–Mississippi River 345 kV Transmission ProjectEXPECTED · Xcel Energy
• Big Stone South to Alexandria 345 kV Transmission LineEXPECTED · Xcel Energy, Otter Tail Power, Great River Energy (co-developers)
• SOO Green HVDC LinkEXPECTED · SOO Green HVDC Link LLC (Direct Connect)
• Maryland Piedmont Reliability ProjectEXPECTED · PSEG
• Manning–Metcalf 500 kV Transmission Line ProjectEXPECTED · Viridon (CAISO-selected project sponsor)
• Southline Transmission ProjectEXPECTED · Southline Transmission LLC

Recent transformer contract awards (2)

• Beckham County–Potter 345 kV Project
• SouthCoast Wind

Component & material suppliers in this market

Components & accessories directory

Business activity

Sourced company developments and transformer-relevant projects with a footprint in this market. An item is shown because it references the company or project — it is not an independently verified award or scope unless the source confirms one.

See the Intelligence hub for the full activity feed.

Projects & intelligence

• AEP Ohio files $840m transmission filing with PUCO for New Albany AI data centre cluster (4× 765/345 kV autotransformers)

  American Electric Power filed regulatory application for four 765/345 kV, 750 MVA autotransformers and associated 765 kV switching station to meet 3.2 GW of hyperscale computing demand in Central Ohio…

• DOE closes up to $3.26bn loan to AEP Texas — ~100 transmission projects, up to 41 GW of new load

  Energy Dominance Financing loan (announced 8 Jul) backs ~100 transmission projects/upgrades spanning ~2,800 miles incl. reconductoring and new lines; AEP Texas has agreements supporting up to 41 GW of…

• LUMA energises three new power transformers in Puerto Rico — orders placed years ahead due to lead times

  New units at Sabana Llana (Carolina), Crea (Bayamón) and Mora (Isabela) substations serve ~782,500 customers, funded via DOE/FEMA; LUMA notes utilities must now order transformers years in advance — a…

• Transformer and breaker backlogs persist despite reshoring progress

  Despite ~$2bn directed toward North American transformer production expansion (new capacity online by 2028), backlogs for transformers and breakers persist as demand keeps outpacing reshored supply — …

• ~$2bn directed to North American transformer capacity (online by 2028)

  Hitachi Energy, Siemens Energy and others expanding, but new capacity won't relieve the current shortage before 2028.

Upcoming events

• IEEE PES Transformers Committee — Fall 2026 18 Oct 2026 · Fort Lauderdale, USA · Official site
• CEATI Transmission & Distribution Conference 2026 17 Nov 2026 · Denver, USA · Official site
• POWERGEN International 2027 18 Jan 2027 · Salt Lake City, USA · Official site

Technical context

• 765 kV / 500 / 345 / 230 / 138 / 69 kV transmission; 60 Hz
• ANSI / IEEE / NEMA standards (IEEE C57 series)
• Distribution transformers (pole-mounted, pad-mounted, dry-type) widely used
• Data-centre and renewables load growth driving 138–345 kV demand
• RDIs and regulatory focus on transformer supply security and lead times

Frequently asked

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