Natural gas engines producer INNIO Holding files for an estimated $1.5 billion US IPO
IPO Overview
INNIO Holding, a producer of natural gas engines and power generation systems, filed on Monday with the SEC to raise up to what we estimate could be $1.5 billion in an initial public offering.
Innio Group is a manufacturer of reciprocating gas engines for power generation and gas compression applications. The company operates two segments: Equipment and Services, selling engines under its Jenbacher and Waukesha brands, which range from 200 kW to 10 MW in output and are designed to run on natural gas as well as alternative fuels including hydrogen blends. Its installed base of approximately 44 GW spans industrial, utility, and data center customers across more than five continents. The Services segment, which accounted for approximately 48% of FY2025 revenue, provides parts and maintenance under multi-year contracts tied to the installed base.
The Munich, Germany-based company was founded in 1906 and booked $2.8 billion in revenue for the 12 months ended March 31, 2026. It plans to list on the Nasdaq under the symbol INIO. INNIO Holding filed confidentially on February 9, 2026. Goldman Sachs, J.P. Morgan, Morgan Stanley, BofA Securities, Barclays, Citi, Baird, BNP Paribas, Deutsche Bank, RBC Capital Markets, and UBS Investment Bank are the joint bookrunners on the deal.
About the Company
We are a leading global distributed energy solutions provider that delivers reliable, flexible, transient, decentralized, modular and efficient power. Our reciprocating gas engines convert gaseous fuels, such as natural, renewable and specialty gases, into electricity and heat or compression for a wide array of critical infrastructure, including the grid, data centers and industrial applications. Our solution portfolio is fully focused on gaseous fuels rather than diesel-based solutions. We operate through two primary segments: Equipment and Services. Our Equipment segment addresses the data center, power solutions and compression end-markets through our modular, flexible and highly efficient engine-based solutions, providing high quality power characteristics for their applications. -Our power solutions provide baseload and peaking power to stabilize utility grids and power independent microgrids. -Our compression solutions support the full energy value chain, including gas lift, gathering, processing, storage and transmission, enabling efficient gaseous fuel transport. Our sizable and growing installed base drives our Services segment, as our gas engine solutions require regular maintenance and replacement of parts to deliver reliable performance. The proprietary design of many critical components positions us to capture a substantial majority of the life cycle service and parts opportunity.