Hitachi Energy‘s Mississippi transformer plant, announced at a cost of $528m, will be the company’s largest single investment in the United States and is expected to more than double its overall transformer production capacity when it opens in 2029. The facility will be built in Gallman, on a 45-acre site at the Copiah County Industrial Park, according to the Office of Governor Tate Reeves.
The Gallman plant will be more than twice the size of Hitachi Energy’s existing facility in Crystal Springs, located about 6.5 miles away. Construction is due to begin later this year, with transformer production scheduled to start in 2029. Once operational, manufacturing will be transferred from Crystal Springs to Gallman; the Crystal Springs site will then be repurposed for warehousing, training and other operational activities.
What the Gallman plant will produce
The new facility will manufacture transformers in the 10 MVA to 160 MVA range, designed for voltages up to 230 kV, according to Utility Dive. That puts the plant’s output squarely in the small-to-medium power transformer category, equipment that forms a critical layer of grid infrastructure between large transmission systems and end users.
The project is expected to create more than 700 jobs. State support is part of the picture: the Mississippi Development Authority is providing assistance through the Mississippi Flexible Tax Incentive, known as MFLEX, the Governor’s office confirmed.
Hitachi Energy CEO Andreas Schierenbeck said: ‘This investment in Mississippi, our largest ever in the US, reflects our long-term commitment to American manufacturing and building the grid infrastructure that will help power America’s growth for decades to come.’
US Energy Secretary Chris Wright welcomed the announcement. ‘America needs more affordable, reliable and secure electricity generation, and this new investment by Hitachi will help make that happen,’ he said.
Part of a broader $1.5bn US manufacturing push
The Hitachi Energy Mississippi transformer project is the centrepiece of a wider US manufacturing programme that now totals about $1.5bn. The company, a wholly owned subsidiary of Japan’s Hitachi, has committed capital across several states in recent months.
In South Boston, Virginia, a $457m expansion of its large power transformer factory broke ground in June and is projected to create 825 jobs. In Alamo, Tennessee, Hitachi Energy announced a $106m expansion in August 2025 that is expected to generate more than 100 jobs. A further $70m is being invested in Westmoreland County, Pennsylvania, to expand high-voltage grid equipment production. Across all four projects, the company expects to create more than 1,600 jobs in total.
Hitachi Energy said the additional capacity is intended to address what it described as rapidly growing demand for electricity across the US. The company cited the expansion of advanced manufacturing, industrial electrification, data centres and other energy-intensive industries, as well as the continued modernisation and expansion of the national power grid, as the forces driving that demand.
The scale of the Gallman commitment reflects how quickly grid equipment has become a priority investment category. Transformer lead times have stretched considerably in recent years as utilities race to upgrade ageing infrastructure, and domestic manufacturing capacity has struggled to keep pace with order volumes.
With the Mississippi plant alone adding more than 700 roles and the broader programme set to surpass 1,600 jobs nationally, the economic footprint of Hitachi Energy’s US expansion is substantial. The state of Mississippi’s use of its MFLEX incentive programme to support the Gallman project suggests local authorities moved quickly to secure the investment in competition with other potential sites.
Production at the new Gallman facility is scheduled to begin in 2029, the date by which Hitachi Energy expects the manufacturing transfer from Crystal Springs to be complete.
