Hyliion Holdings Corp. (NYSE American: HYLN), a leading provider of innovative KARNO^TM Power Modules, today announced it has been awarded a Phase II Small Business Innovation Research (SBIR) contract in the amount of $1.5 million from the U.S. Navy to further develop and refine its scalable multi-megawatt platform for shipboard and stationary military applications.

The newly awarded Phase II contract builds on the successful completion of Phase I, during which Hyliion completed the initial concept design and architectural planning for a multi-megawatt naval-compliant power generator system. Phase II will focus on key enabling technologies for the multi-KARNO Core architecture, including the development of integrated software and power electronics, motion control improvements, and communications systems essential for scaled system operation. Hyliion expects Phase II to commence immediately and continue for a period of 18 months.

“Advancing the scalability and operational control of the KARNO Modules is critical to meeting the Navy’s future energy needs,” said Thomas Healy, Founder and CEO of Hyliion. “This award allows us to lay the groundwork for a highly resilient and efficient power solution that can adapt to mission requirements across both stationary and mobile defense operations.”

During Phase II, Hyliion will focus on the software required to manage and synchronize multiple KARNO Cores, ensuring they can deliver stable, dynamic power in high-demand environments. Additional work includes refining the integrated drive electronics to meet size, weight, power, and cost (SWaP-C) targets, and aligning control schemes with naval operating standards. These innovations are designed to accelerate Hyliion’s timeline to deploy a full multi-megawatt shipboard generator system.

Hyliion’s KARNO Power Module is a linear generator powered by heat rather than combustion. Its external heat generation architecture, enabled by additive manufacturing, is designed to support operation on more than 20 fuel types and produce electricity with high efficiency, low maintenance requirements, and minimal acoustic and thermal signatures—making it well-suited for naval applications.

Phase II development efforts will also align with Hyliion’s commercial 2 MW product roadmap, allowing for shared learnings between defense and civilian applications.

For more information about Hyliion and its modular power generation solutions, please visit www.hyliion.com.

For additional details on the SBIR, please visit https://www.navysbir.com/n24_1/N241-060.htm.

About Hyliion

Hyliion is committed to creating innovative solutions that enable clean, flexible and affordable electricity production. The Company’s primary focus is to provide distributed power generators that can operate on various fuel sources to future-proof against an ever-changing energy economy. Headquartered in Austin, Texas, and with research and development in Cincinnati, Ohio, Hyliion is initially targeting the commercial and waste management industries with a locally deployable generator that can offer prime power as well as energy arbitrage opportunities.

Beyond stationary power, Hyliion will address mobile applications such as vehicles and marine. The Company aims to offer innovative, yet practical solutions that contribute positively to the environment in the energy economy. For further information, please visit www.hyliion.com.

Forward Looking Statements

The information in this press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements, other than statements of present or historical fact included in this press release, regarding Hyliion and its future financial and operational performance, as well as its strategy, future operations, estimated financial position, estimated revenues, and losses, projected costs, prospects, plans and objectives of management are forward looking statements. When used in this press release, including any oral statements made in connection therewith, the words “could,” “should,” “will,” “may,” “believe,” “anticipate,” “intend,” “estimate,” “expect,” “project,” the negative of such terms and other similar expressions are intended to identify forward-looking statements, although not all forward- looking statements contain such identifying words. These forward-looking statements are based on management’s current expectations and assumptions about future events and are based on currently available information as to the outcome and timing of future events. Except as otherwise required by applicable law, Hyliion expressly disclaims any duty to update any forward-looking statements, all of which are expressly qualified by the statements herein, to reflect events or circumstances after the date of this press release. Hyliion cautions you that these forward-looking statements are subject to numerous risks and uncertainties, most of which are difficult to predict and many of which are beyond the control of Hyliion. These risks include, but are not limited to, our status as an early stage Company with a history of losses; our expectation of incurring significant expenses and continuing losses for the foreseeable future; our ability to develop key commercial relationships with suppliers and customers; our ability to retain the services of Thomas Healy, our Chief Executive Officer; the expected performance of the KARNO generator and system; the execution of the strategic shift from our powertrain business to our KARNO business, and the other risks and uncertainties described under the heading “Risk Factors” in our SEC filings including in our Annual Report (See item 1A. Risk Factors) on Form 10- K filed with the Securities and Exchange Commission (the “SEC”) on February 25, 2025 for the year ended December 31, 2024. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. Should one or more of the risks or uncertainties described in this press release occur, or should underlying assumptions prove incorrect, actual results and plans could differ materially from those expressed in any forward- looking statements. Additional information concerning these and other factors that may impact Hyliion’s operations and projections can be found in its filings with the SEC. Hyliion’s SEC Filings are available publicly on the SEC’s website at www.sec.gov, and readers are urged to carefully review and consider the various disclosures made in such filings.

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