# GE Vernova and Prolec GE Unveil $375 Million Expansion to Double High-Voltage Transformer Output in North America

> GE Vernova and its 50/50 joint venture partner Prolec GE have announced a comprehensive $375 million investment to expand transformer manufacturing operations across the United States and Mexico, specifically targeting severe lead time bottlenecks for high-voltage (HV) and extra-high-voltage (EHV) substation transformers.

- **Publish Date:** 2026-10-01
- **Category:** transformers-grid
- **Reading Time:** 5 min
- **Original Source Citation:** [GE Vernova & Prolec GE Media Relations](https://www.gevernova.com/news/press-releases/prolec-ge-vernova-375m-transformer-manufacturing-expansion-north-america)
- **Tags:** GE Vernova, Prolec GE, Transformers, Manufacturing Expansion, North America, Lead Times, 765 kV, EHV Substation
- **Canonical URL:** https://voltformer.com/news/ge-vernova-prolec-ge-375m-expansion-us-transformer-manufacturing
- **Markdown Source:** https://voltformer.com/news/ge-vernova-prolec-ge-375m-expansion-us-transformer-manufacturing.md

## Relieving Critical Substation Transformer Supply Deficits

With average procurement lead times for transmission-class power transformers lingering between 120 and 160 weeks across North America, GE Vernova and Prolec GE unveiled major capital expansions on October 1, 2026. The investment increases production footprints across facilities in Monterrey, Shreveport, and Waukesha.

The capacity expansion will double annual manufacturing throughput for single-phase and three-phase autotransformers rated from 230 kV up to 765 kV, directly addressing interconnection backlogs faced by regional transmission operators (RTOs) and multi-gigawatt artificial intelligence data center campuses.

## Automation, High-Permeability Core Lines, and Testing Bays

The capital program installs automated Step-Lap core slitting lines capable of handling ultra-thin laser-scribed grain-oriented electrical steel (GOES), alongside state-of-the-art vertical winding machines and automated vapor-phase drying chambers that accelerate insulation curing by 30%.

Additionally, two new extra-high-voltage test bays equipped with 800 kV lightning impulse generators and partial discharge (PD) acoustic localization suites are being commissioned to ensure compliance with stringent IEEE C57 standards before field shipment.

## Strengthening Grid Modernization and Clean Energy Integration

Executives confirmed that the expanded production lines will begin rolling out initial units in early 2027, prioritizing domestic utility customers and renewable interconnection developers across MISO, PJM, and ERCOT.

This expansion solidifies domestic energy independence, insulating North American grid infrastructure against foreign component bottlenecks and tariff volatility.

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