Two groups of transformer manufacturers are active in the U.S. electric power industry.
Large power transformer manufacturers include the global Big Three equipment suppliers to the electric power industry (Hitachi Energy, GE, Siemens), along with specialist power transformer manufacturers including Delta Star, HICO America, Hitachi, Hyundai, MEPPI, Pennsylvania Transformer, Virginia Transformer, and WEG.
Distribution transformer manufacturers include the Big Three, plus several North American-owned companies including ERMCO, Howard Industries, Eaton, Central Maloney, Maddox, Hammond HPS, Schneider Electric and Carte International and several others.
Domestic sales of power transformers from 30 MVA and up were well over $2 Billion in 2025. The Newton-Evans chart below shows what we believe is the dollar value range of actual unit shipments of power and distribution transformers for 2025. The “bookings level” for 2026 and for the next few years remains above these estimated shipment values, due in large part to the extended lead times for unit delivery of power transformers.
Our newly revised chart attempting to show the transformer demand–supply imbalance curves over the 2025-2030 years follows. Note our belief that the extended delays in transformer deliveries will ease over the coming few years as more and more new and updated transformer manufacturing facilities come on line in the U.S. There is good news in light of the announced 27 new U.S.-based transformer manufacturing facilities or major plant addition announcements made by more than 20 manufacturers over the recent 24 months.
Findings from the new transformer market overview series include estimates of 2025 shipments of power and distribution transformers and the combined revenues of transformer services with transformer monitoring and diagnostic equipment. The estimated shipment values are shown in the slide below.
summary reviews and highlights from completed studies
