MacLean Power Systems (MPS), backed by existing financial sponsors Blackstone and Centerbridge Partners, has agreed to acquire Delta Star, a North American provider of power transformers and mobile substation solutions, for an undisclosed sum.
The deal follows MPS’s merger with Blackstone-owned Power Grid Components earlier this year and will enable the combined group to offer a comprehensive portfolio of engineered components and solutions across electric transmission, distribution and substation infrastructure, MPS said.
Funds affiliated with Blackstone Energy Transition Partners, Blackstone Capital Partners and Centerbridge Partners are expected to make substantial additional equity investments to fund the transaction, which is expected to close in the fourth quarter of 2026.
Founded in 1908, Delta Star provides engineered-to-order power transformers, mobile and unitised substations, auxiliary trailers and related field services. The company operates three manufacturing campuses in Lynchburg, Virginia; San Carlos, California; and Saint-Jean-sur-Richelieu, Quebec, Canada.
Steve Scharnhorst, CEO of MPS, and Mike Plaster, president, said, “At MPS, every decision starts with our customers and the challenges they face in building, maintaining, and modernising the grid. 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.
“Just as importantly, Delta Star brings a team that shares our commitment to safety, quality, reliability, and doing the right thing for the customer every day.”
Jason Greene, president and CEO of Delta Star, said: “MPS shares our commitment to quality, innovation, and serving the evolving needs of the electrical grid. 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.”
JP Munfa, senior managing director, and Mark Zhu, managing director, at Blackstone, said: “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.
“Its leading power transformer and mobile substation solutions further strengthen MPS’s capabilities, and we are excited to work to help accelerate the combined company’s continued growth.”
David Foley, global head of Blackstone Energy Transition Partners, said: “We continue to see significant demand for investment across dependable power infrastructure.
“This combination with Delta Star enhances MPS’s ability to deliver critical equipment and solutions that help utilities, data centres, power generation providers, and other customers meet evolving needs while strengthening the safety, reliability and efficiency of the North American electric grid.”
Conor Tochilin, senior managing director at Centerbridge, said: “We are thrilled that Delta Star is joining MPS and look forward to working with Delta Star’s employees and customers going forward.
“Delta Star shares MPS’s strong commitment to innovation, quality, and customer service, which will enable the combined business to enhance its offerings and better serve customers as it grows.”
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