US power generation firm Rehlko has secured 1.25GW of natural gas engine capacity from Innio Group to support growing power demand in the data center market.

Innio will deliver the capacity over the next three years to RehIko’s Clarke Energy subsidiary, which the company has said will underpin its growing pipeline of projects across the data center market.

Exact details on the capacity and configuration of the gas engines were not disclosed. Innio offers a range of gas engine configurations primarily through its Jenbacher and Waukesha gas engine brands. Its Jenbacher brand offers engines with capacities ranging between 250kW and 10.6MW.

"This agreement strengthens our ability to support customers making long‑term investments in data‑center infrastructure and flexible power generation. Securing multi‑year supply enhances visibility and confidence in delivery at a time when demand is being driven by structural, rather than cyclical, market forces," said Brian Melka, president and CEO of Rehlko.

Dr. Olaf Berlien, president and CEO of Innio, commented: "With this framework agreement, we are strengthening our partnership with Rehlko and creating long‑term planning certainty in a market with rapidly growing demand. It ensures that our customers can continue to rely on proven technology and dependable execution even in highly critical applications such as data centers and grid‑stabilization projects."

Based in Wisconsin, RehIko was formerly known as Kohler Energy, rebranding in September 2024. Kohler Company first announced plans to carve out its energy business in November 2023. Businesses within the separated portfolio include Power Systems, Engines, Home Energy, Kohler Uninterruptible Power, Clarke Energy, Curtis Instruments, and Heila Technologies.