Hitachi Energy Commits $528 Million to a Mississippi Transformer Plant That Ships Nothing Until 2029

Hitachi Energy will spend $528 million on a transformer factory in Gallman, Mississippi. The Mississippi Development Authority announced the deal on September 15. The site covers 45 acres at the Copiah County Industrial Park, about 6.5 miles from the company’s existing Crystal Springs works. Construction starts late in 2026. The plant will not ship a transformer until 2029.

The two announcements do not agree on how many people the plant will employ. MDA’s release counts 654 jobs, and AccelerateMS repeats that figure. Hitachi Energy’s own release says “over 700.” Neither side explains the gap. The existing Copiah County operation employs 475 people and builds small power transformers.

Mississippi pays part of the bill. MDA supports the project through the Mississippi Flexible Tax Incentive program, known as MFLEX. It also funds site development and infrastructure work. Copiah County adds its own assistance. Neither release puts a dollar value on any of it.

A fourth plant in the same program

Gallman is the largest piece of a roughly $1.5 billion US expansion that Hitachi Energy has announced plant by plant. The company put $457 million into a large power transformer factory in South Boston, Virginia. That one runs in 2028 with 825 jobs. Alamo, Tennessee, gets $106 million and more than 100 jobs by mid-2027. Westmoreland County, Pennsylvania, took $70 million in 2025. Together the four projects account for more than 1,600 jobs.

Governor Tate Reeves announced the deal from the G20 Energy Abundance Ministerial in Houston. “Hitachi Energy could’ve made its largest investment in America anywhere in the country, but the company chose Mississippi,” he said. Hitachi Energy CEO Andreas Schierenbeck framed it as a grid play rather than a jobs one. He called the investment “our largest ever in the U.S.” and tied it to “building the grid infrastructure that will help power America’s growth.”

Why It Matters

Transformer lead times now run as long as four years, according to pv magazine USA. That is the constraint developers actually hit. It is also why a factory announcement reads as grid news and not as economic development news. The problem is the calendar. A plant that starts production in 2029 does nothing for an interconnection queue in 2026. The first units off the Gallman line arrive roughly when a transformer ordered today would arrive anyway.

The second thing worth watching is what the new capacity actually builds. TD World reports the plant will “primarily focus on increasing the output of power transformers manufactured in Mississippi.” No release names a voltage class, a MVA rating, or an annual unit count. That matters. Doubling output from a base of 475 workers who build small power transformers is not the same as adding large power transformer capacity. The large units are where the US shortage bites hardest, and they are what the South Boston plant targets.

Mississippi already hosts grid equipment manufacturing. Siemens Energy broke ground on a high-voltage switchgear plant in Pearl, which mgrid covered last year. The state now bets a second time that federal pressure to build grid hardware at home holds long enough to fill both plants.

Critical Perspective

Two things in this announcement do not survive a close read. The first is the job count. Mississippi’s development agency says 654. Hitachi Energy says over 700. That is a 7 percent spread on the headline public benefit of a project the state is helping to fund, and neither release says which figure counts the 475 people already working in Copiah County. A reader cannot tell whether 654 is net new hiring or a different accounting of the same plant.

The second is what MFLEX costs. MDA names the incentive and says it is also paying for site development and infrastructure. It attaches no number to either. Copiah County’s contribution is described the same way. The investment figure is precise to the million. The public share of it is not stated at all.

There is a third gap that matters more for the grid than for Mississippi. The releases say output will more than double, and TD World quotes the company saying the plant will “primarily focus on increasing the output of power transformers manufactured in Mississippi.” No voltage class. No MVA rating. No annual unit count. The existing site builds small power transformers, and the US shortage that drives the four-year lead times is worst in large units. Until someone names the product, “doubling output” is a claim about the factory, not about the queue.

Sources

• Mississippi Development Authority, “Hitachi Energy bringing its largest transformer manufacturing investment in U.S. to Mississippi” (Sept. 15, 2026)
• Hitachi Energy press release (Sept. 15, 2026)
• T&D World, “Hitachi Energy Selects Mississippi for $528M Transformer Factory” (Sept. 16, 2026)
• pv magazine USA, “Hitachi Energy commits $528 million for Mississippi transformer factory” (Sept. 17, 2026)

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