Blackstone announced that funds affiliated with Blackstone Energy Transition Partners and other Blackstone funds have acquired Alliance Technical Group, a provider of environmental testing, monitoring and compliance services for energy and industrial customers.
Alliance Technical Group, founded in 2000 and headquartered in Decatur, Alabama, employs more than 2,200 people across more than 60 offices and laboratories in the U.S. and Canada, according to the announcement. The company provides services including source and laboratory testing, continuous emissions monitoring systems and leak detection and repair to help facilities meet regulatory requirements and improve operational performance using data-driven insights.
Blackstone positioned the deal as aligned with its energy transition strategy, which targets control-oriented equity investments in energy-related businesses expected to benefit from rising electricity demand and broader decarbonization and compliance needs. Financial terms were not disclosed.
Harris Williams and RBC advised Blackstone, with Kirkland & Ellis serving as legal advisor. Piper Sandler advised Alliance, with Jones Day as legal advisor.
KEY QUOTES
“Blackstone’s investment is a testament to our strong organic and strategic growth as a trusted market leader in the testing, inspection and compliance sector. With our partners at Blackstone, we look forward to continuing to scale and support our customers in navigating a complex, evolving regulatory landscape.”
Chris LeMay, Chief Executive Officer, Alliance Technical Group
“Alliance is a clear market leader in emissions testing and monitoring, providing mission-critical services that directly support customers’ compliance and operational performance. Chris and the ATG management team have built a diversified platform with a strong reputation for technical quality and reliability. Together, we are excited to leverage Blackstone’s scale and resources to help support ATG’s continued growth, serving its existing and new customers across the power, energy and industrial sectors.”
Darius Sepassi, Senior Managing Director, and Mark Henle, Managing Director, Blackstone
“Our investment strategy focuses on identifying leading businesses that we believe are positioned to disproportionately benefit from the growing demand for electricity and the broader energy transition. We are excited to back Alliance, which plays a critical role in helping energy and industrial facilities operate safely, efficiently, and in compliance with environmental regulations.”
David Foley, Global Head, Blackstone Energy Transition Partners

