Rehlko Secures 1.25 GW Engine Deal to Power Surging AI & Data Centers

MILWAUKEE, WI – April 09, 2026 – In a strategic move to address the voracious energy appetite of the world's expanding digital infrastructure, energy resilience firm Rehlko has entered into a multi-year framework agreement with INNIO Group. The deal secures approximately 1.25 gigawatts (GW) of gas engine capacity over the next three years, a critical supply line aimed squarely at the accelerating power demands of data centers and the growing need for flexible grid support.

The agreement positions Rehlko and its in-house delivery platform, Clarke Energy, to capitalize on what its leadership calls a structural shift in energy markets. With the rise of artificial intelligence driving unprecedented data center growth, this deal provides crucial supply certainty in an increasingly constrained global market for power generation equipment.

Fueling the Digital Expansion

The timing of the agreement is no coincidence. The global economy is in the midst of a digital transformation that is fundamentally reshaping energy consumption patterns. The engine of this change is the data center—the vast, power-intensive facilities that house the computing infrastructure for cloud services, streaming media, and, most significantly, artificial intelligence.

Industry projections paint a stark picture of this demand. The International Energy Agency (IEA) estimates that global electricity consumption by data centers could more than double by 2030, potentially reaching nearly 1,000 terawatt-hours. This surge is creating immense pressure on traditional power grids, many of which are already struggling to keep pace with demand and integrate renewable energy sources. Data center developers are increasingly facing long delays for grid connections, forcing them to seek reliable, on-site power solutions to meet aggressive construction and operational timelines.

Rehlko's agreement directly targets this challenge. By securing a long-term supply of gas engines, the company can provide hyperscale, colocation, and enterprise data center operators with a clear, predictable path to powering their multi-phase expansions. This move transforms the conversation from one-off projects to a standardized, repeatable deployment model for hybrid power solutions.

"This agreement strengthens our ability to support customers making long-term investments in data-center infrastructure and flexible power generation," said Brian Melka, President and Chief Executive Officer of Rehlko. "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."

Guardians of a Strained Grid

Beyond serving the direct needs of data centers, the 1.25 GW of capacity plays a vital role in the broader energy transition. As grids worldwide incorporate more intermittent renewable sources like solar and wind, the need for dispatchable power—sources that can be turned on and off quickly to ensure stability—has become paramount.

Gas engines are exceptionally well-suited for this role. Their ability to start up rapidly and adjust output makes them ideal for balancing the grid, filling gaps when renewable generation dips, and preventing blackouts. This capability is essential for maintaining the high-reliability power that both modern society and critical infrastructure like data centers depend on.

Furthermore, the industry is evolving toward more integrated and sustainable solutions. The gas engines supplied under this agreement are increasingly being deployed in hybrid configurations alongside Battery Energy Storage Systems (BESS). This combination offers the best of both worlds: BESS provides instantaneous response and can store excess renewable energy, while gas engines offer long-duration, reliable power. This hybrid approach is emerging as a critical enabler for building resilient, low-carbon microgrids that can operate independently of the main utility grid if necessary.

Dr. Olaf Berlien, President and Chief Executive Officer of INNIO Group, commented on this dual role, stating, "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."

A Partnership Built on Certainty

The strategic core of the deal lies in the long-standing relationship between Rehlko's subsidiary, Clarke Energy, and INNIO. With over 30 years of partnership and a track record of supporting a global installed base of over 10 GW of gas engines, Clarke Energy provides the deep engineering and service expertise needed to execute such a large-scale commitment.

This framework agreement insulates Rehlko from supply chain volatility and provides a significant competitive advantage. It allows the company to offer customers not just hardware, but a comprehensive, integrated lifecycle solution. This includes delivery certainty for multi-phase developments, standardized designs for faster deployment, and long-term contracted maintenance to guarantee uptime and protect asset value.

"By combining secured, multi-year engine allocation with Clarke Energy's scaled global service organization, we are uniquely positioned to offer customers a fully integrated lifecycle proposition," Melka added. "This includes not only delivery certainty, but multi-year contracted maintenance tailored to the core engine platform - protecting uptime, performance and asset value throughout the life of the plant."

For customers planning billion-dollar infrastructure investments, this level of predictability is invaluable. The agreement enables them to align power generation availability with construction schedules, regulatory approvals, and long-term operational strategies, removing a major variable from their complex planning processes. By securing a foundational component of the energy infrastructure, Rehlko and INNIO are not just selling engines; they are enabling the continued growth of the digital world and reinforcing the energy grid that supports it.