NEW YORK: MacLean Power Systems said Wednesday it has signed definitive agreements to acquire Delta Star Inc., a move that significantly expands its presence in the power transformer and mobile substation market.

The acquisition follows MPS’s combination with Power Grid Components earlier this year and will allow the company to offer a comprehensive portfolio of engineered components and solutions for electric transmission, distribution and substation infrastructure, the company said in a statement.

Financial terms were not disclosed. The transaction is expected to close in the fourth quarter of 2026, subject to customary closing conditions and regulatory approvals.

Delta Star, founded in 1908 and headquartered in Lynchburg, Virginia, provides engineered-to-order power transformers, mobile and unitized substations, auxiliary trailers and related field services. The company employs more than 1,400 people across the U.S. and Canada and operates three manufacturing campuses in Virginia, California and Quebec.

Its customers include electric utilities, data centers, and industrial and renewable energy companies, supporting grid modernization and the growing demand for reliable power infrastructure across North America.

“At MPS, every decision starts with our customers and the challenges they face in building, maintaining, and modernizing the grid,” Steve Scharnhorst, CEO of MPS, and Mike Plaster, president, said in a joint statement. “Delta Star brings highly respected power transformer and mobile substation capabilities, which complement our existing portfolio and strengthen our ability to support customers across the full power delivery network.”

Jason Greene, president and CEO of Delta Star, said the transaction creates new opportunities for the company’s employees and customers.

“MPS shares our commitment to quality, innovation, and serving the evolving needs of the electrical grid,” Greene said. “Together, we will be well positioned to build on Delta Star’s strong foundation and continue delivering the reliable power solutions our customers depend on.”

MPS’s existing financial sponsors — funds affiliated with Blackstone Energy Transition Partners, Blackstone Capital Partners and Centerbridge Partners — are expected to make substantial additional investments to fund the acquisition.

“Delta Star has a long track record of serving electric utilities and other customers across North America with a high degree of innovation, quality, and trust,” said JP Munfa, senior managing director, and Mark Zhu, managing director, at Blackstone.

David Foley, global head of Blackstone Energy Transition Partners, added that the combination enhances MPS’s ability to deliver critical equipment and solutions for utilities, data centers and power generation providers.

Conor Tochilin, senior managing director at Centerbridge, said the combined business will be better positioned to enhance its offerings as it grows.

Jefferies, JPMorgan, Barclays and UBS served as financial advisors to MacLean Power Systems, with Vinson & Elkins LLP and Blake, Cassels & Graydon LLP serving as legal advisors. Wells Fargo served as financial advisor to Delta Star, with Hunton Andrews Kurth LLP, Johnson Legal Group P.C. and Woods Rogers serving as legal advisors.

MacLean Power Systems is a manufacturer of engineered products for transmission, distribution and substation infrastructure. Delta Star is a North American provider of power transformers and mobile substation solutions. Blackstone is the world’s largest alternative asset manager, with over $1.3 trillion in assets under management. Centerbridge Partners has approximately $49 billion in assets under management as of June 30, 2026.