Hitachi Energy Breaks Ground on $457M Virginia Transformer Factory, Largest in US, Amid Data-Center Grid Crunch
- Data Centers Grid Connection & Reliability News
Marin Holt
- 0
- 5 minutes read
- Investment: $457 million
- New jobs: 825 (Halifax County, VA)
- Product: large power transformers
- Production start: around 2029
- Transformer lead times: up to 3 years
Hitachi Energy broke ground on June 29 on a $457 million expansion of its South Boston, Virginia factory that the company and state officials describe as the largest US facility dedicated to large power transformers, the grid backbone equipment now in critically short supply as AI data centers strain the electricity system. The project adds about 825 jobs in Halifax County, roughly doubling a site that has built transformers since 1968, and is expected to reach production around 2029. Governor Abigail Spanberger, Senators Mark Warner and Tim Kaine, and Representative John McGuire attended the ceremony.
Large power transformers step voltage up and down between generation, the high-voltage grid, and end users, and they have become one of the tightest bottlenecks in US grid buildout. Lead times now stretch up to three years from order to delivery. Data centers are projected to account for roughly 44% of US electricity load growth from 2023 to 2028, and an ICF analysis cited by Hitachi projects national power demand rising 21% by 2030 and 39% by 2035.
Virginia anchors that demand. Northern Virginia hosts the world’s largest concentration of data centers, putting transformer supply at the center of the state’s grid-connection queue. The South Boston plant will produce transformers for high-voltage transmission, power generation, industrial sites, and data centers.
The expansion is the cornerstone of a broader investment of more than $1 billion in US grid-equipment manufacturing that Hitachi Energy first outlined in September 2025, which also covers a transformer-components plant in Alamo, Tennessee, dry-type transformer capacity in Bland and Atkins, Virginia, and high-voltage components near Mount Pleasant, Pennsylvania. To house the incoming workforce, 136 residential units are being built on land donated by Halifax County.
Why It Matters
Transformers, not chips or turbines, are increasingly the item that gates when a new data center or generator actually connects. Domestic capacity of this scale is one of the few levers that shortens multi-year lead times and cuts reliance on imported units sitting in even longer queues. For developers in PJM and the Virginia load pocket, more US supply eventually eases a hard constraint on interconnection. The near-term caveat is timing: with production not expected until about 2029, the groundbreaking does little for projects trying to energize in the next two to three years.
Critical Perspective
Hitachi Energy is putting $457 million into what it calls the largest US large-power-transformer plant, adding 825 jobs but not reaching production until around 2029. That timeline lands after the sharpest phase of the crunch it targets, with data centers driving roughly 44% of US load growth from 2023 to 2028 while rivals including GE Vernova race their own grid-equipment expansions to the same late-decade finish line. The push echoes TSMC’s Arizona chip fab, subsidized to cure a shortage yet slipping its production start by years even as the immediate scarcity was met through other means. If transformer lead times still run up to three years, what serves the data centers and generators stuck in the queue between now and 2029?
