JENBACH, Austria, November 08, 2025 — INNIO Group has signed a contract with KMW (Kraftwerke Mainz-Wiesbaden AG) for a new 54-MW peaking power plant. A total of twelve modular energy systems from INNIO are intended to be operated at the site. Part of the plant’s capacity is expected to be available for the “Green Rocks” data center, which is being built by KMW and Norwegian data center operator Green Mountain. INNIO’s decentralized energy solutions serve as backup in case of a blackout due to grid failure.
The power plant is scheduled to be commissioned by the end of 2027. “The partnership between INNIO and KMW is a strategic milestone for energy supply in Mainz. It combines efficiency with future viability and is designed to support the operation of our data center even in the event of a blackout,” said KMW board member Oliver Malerius.
“With our innovative energy solutions, we secure the power supply for critical infrastructure and data centers, enabling dynamic AI development not only in the U.S., but also right here in the heart of Europe,” said Thomas Seeber, managing director Sales Data Center at INNIO Group.
INNIO’s energy systems for the KMW power plant offer a sustainable alternative to traditional diesel generators, with up to 95% lower nitrogen oxide emissions. Their output can be flexibly adjusted to meet specific power needs. Furthermore, these systems are “Ready for H2”.