Delta Star to be Acquired by MacLean Power Systems

(Lynchburg, VA – September 1, 2026) – Delta Star, Inc. (DSI) an industry-leading manufacturer of power transformers and mobile substations, today announced that it has entered into a definitive agreement to join MacLean Power Systems (MPS), creating a unique portfolio to serve the North American utility market in an era of unprecedented demand due to growing power consumption, electrification, aging infrastructure, and evolving power supply. The transaction is expected to be completed in the fourth quarter of 2026. 

Founded in 1908, DSI was formed to manufacture devices required by the electrical industry in the generation, transmission, and distribution of electrical energy. DSI’s current portfolio includes power transformers, mobile substations, modular substations, mobile circuit switchers, mobile breakers, and field services.

All of DSI’s transformers are designed and manufactured to customer specifications with manufacturing facilities in Virginia, California, and Quebec.

“This is an important milestone in Delta Star’s journey and an exciting development for our company,” said Jason Greene, president and chief executive officer of Delta Star. “MacLean Power Systems is a premier brand in our industry with a rich history of providing reliable, high-quality solutions that support the electrical power grid. Together we can better serve our customers during a time of rapidly growing electrical infrastructure needs due to unprecedented, explosive growth.”

Founded in 1986, MacLean Power Systems (MPS) is a leading manufacturer of customer-driven, highly engineered solutions for the construction, maintenance, repair, and upgrade of critical electrical transmission substation, and distribution infrastructure.

MPS offers a comprehensive portfolio of industry-leading products – switches, pole line hardware, conductor hardware, insulators, arresters, connectors, anchors, instrument transformers, crossarms, controlled switching devices, and related components – delivered with best-in-class lead times. From emergency restoration to full-scale electrical grid buildouts, MPS is a trusted partner for utility operators. MPS delivers innovative, easy-to-install products that help reduce grid operating costs and drive long-term reliability.

“We look forward to partnering with Jason and the Delta Star management team to continue to build on an impressive 100+ year history,” said Steve Scharnhorst, chief executive officer of MacLean Power Systems. “DSI is an exceptional business with a well-earned reputation for quality, reliability, and engineering excellence. Its highly complementary portfolio, technical and engineering excellence, and deep customer relationships make DSI a strong fit with MPS. We look forward to welcoming Delta Star’s dedicated employees to our team and to supporting Delta Star’s continued growth by expanding capacity and working together to deliver even greater value to our shared customer base.”

Terms of the transaction were not disclosed.

Advisors

Wells Fargo served as the exclusive financial advisor and Hunton Andrews Kurth LLP served as legal counsel to Delta Star on the transaction. DSI was also advised by legal counsel at Johnson Legal Group, P.C. and Woods Rogers. 

About Delta Star, Inc.

Founded in 1908, Delta Star, Inc. is recognized as an industry leader in pursuit of continuously improving the performance, delivery, and reliability of power to meet the energy needs of the future. DSI’s more-than 1,400 employees are committed to providing peace of mind through reliably connecting people in communities throughout North America to one of life’s most basic needs – electricity.

About MacLean Power Systems

MacLean Power Systems, a Blackstone portfolio company, is a leading manufacturer of engineered products and solutions used in the maintenance, repair, upgrade, and construction of transmission, distribution, and substation infrastructure. LEADING THE WAY™ in innovation, MPS is dedicated to keeping the power infrastructure performing optimally by supplying world-class solutions to fulfill the needs of customers who maintain electrical services to consumers worldwide. Learn more at www.macleanpower.com.

About Blackstone Energy Transition Partners

Blackstone Energy Transition Partners is Blackstone’s strategy for control-oriented equity investments in energy-related businesses, a leading energy investor with a successful long-term record, having committed over $29 billion of equity globally across a broad range of sectors within the energy industry. Blackstone Energy Transition Partners’ investment philosophy is based on backing exceptional management teams with flexible capital to provide solutions that help energy companies grow and improve performance, thereby delivering more reliable, affordable and cleaner energy to meet the needs of the global community. In the process, Blackstone Energy Transitions Partners builds stronger, larger scale enterprises, create jobs and generates lasting value for its investors, employees and all stakeholders. Further information is available at https://www.blackstone.com/our-businesses/blackstone-energy-transition-partners/.

About Blackstone
Blackstone is the world’s largest alternative asset manager. Blackstone seeks to deliver compelling returns for institutional and individual investors by strengthening the companies in which the firm invests. Blackstone’s over $1.3 trillion in assets under management include global investment strategies focused on real estate, private equity, credit, infrastructure, life sciences, growth equity, secondaries and hedge funds. Further information is available at www.blackstone.com.

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Media Contact
Asa Keimig
Director of Corporate Communications & Marketing
akeimig@deltastar.com