Hyliion Earnings Call: KARNO Progress Amid Cash Burn

Hyliion Holdings Corp. ((HYLN)) has held its Q4 earnings call. Read on for the main highlights of the call.

Hyliion Holdings’ latest earnings call struck a cautiously optimistic tone as management highlighted tangible technical milestones and growing commercial interest around its KARNO generator platform. While revenue remains modest and losses are widening, executives framed 2026 as the bridge from prototype to early commercialization, with certification, execution, and disciplined cash use as the key swing factors.

UL Certification Nears But Key Module Test Remains

Hyliion reported completion of UL testing for its linear electric motor and battery pack, covering two of the three certifications required for KARNO. Initial full power module tests revealed minor refinements are needed, and the company now targets full module UL certification in the second quarter of 2026, a crucial gating factor for broader deployments.

Power Output Rises Toward 200 kW Design Target

Engineers have boosted KARNO’s demonstrated output to 175 kilowatts, up from just over 150 kW previously. Management believes piston, cylinder liner, and thermal optimizations can unlock the full 200 kW design rating by the end of 2026, which will be important for meeting performance specs demanded by commercial and data center customers.

Fuel Flexibility Opens New Commercial And Military Uses

The company showcased dynamic fuel switching between natural gas and propane and successfully ran a KARNO core on diesel while exporting power to the grid. Crucially, the diesel test met Tier 4 final emissions standards without aftertreatment, expanding the platform’s appeal in diesel‑heavy prime power and military applications where emissions and logistics are critical.

Early Deployments Underscore Rising Customer Interest

Hyliion now has five KARNO units on site, including two development systems and three early adopter units. Nearly 500 units sit under nonbinding letters of intent across commercial, data center, and military markets, and management plans to deploy roughly 10 early adopter systems in 2026, including Navy units that will provide real‑world validation.

Modular Multi-KARNO Architecture Targets Megawatt Scale

To address data center and industrial demand, Hyliion has designed a modular architecture that aggregates 200 kW cores into systems scaling in 800 kW increments. The initial 2 MW concept is sized to fit within a 20‑foot container footprint, with a roadmap extending to 800 kW, 1.6 MW, 2.4 MW and beyond for multi‑megawatt use cases.

ABM Partnership Aims To Accelerate Site Deployments

A new strategic partnership with ABM Industries is intended to smooth the path from prototype to field deployment. ABM will support site engineering, system integration, operations, and potential energy‑as‑a‑service offerings, giving Hyliion a channel to reach commercial, industrial, data center, and mission‑critical customers more quickly.

Manufacturing Capacity Builds With Additive Printing

Hyliion is operating more than 30 additive manufacturing printers, most of them in Austin, and has additional machines on order to increase throughput. The company is also testing GE Colibrium laser‑equipped printers aimed at further boosting print speeds, a key lever for scaling production as orders move from prototypes to volume.

Military Pipeline Points To Emerging Revenue Stream

Beyond roughly $20 million of Navy and related contracts already underway, Hyliion has identified $40 million to $50 million in potential new U.S. military opportunities. Management expects around $10 million of total revenue in 2026 from a mix of R&D services and initial commercial deployments, with defense work acting as an early anchor.

Cash Position Solid But Expansion Will Need Capital

The company ended 2025 with $152.4 million in cash and investments, slightly below its $155 million projection, partly due to deferred equipment financing. Net cash used in 2025 was $67.4 million, and management now forecasts a little over $50 million of net spending in 2026, implying a year‑end cash balance near $100 million and likely new capital needs for scaling.

Revenue Still Small As Losses Edge Wider

Full‑year 2025 revenue reached $3.5 million, up 133% from $1.5 million in 2024, but remains entirely tied to R&D services rather than product sales. Net loss widened to $57.2 million from $52.0 million the prior year, while operating expenses were roughly flat at $65.7 million, underscoring the gap between technical progress and financial scale.

Spending Discipline Meets Ongoing Cash Burn

Operating expenses rose just 2% year over year, suggesting some discipline as the company advances KARNO. Even so, cash usage of $67.4 million in 2025 and planned net spending above $50 million in 2026 highlight the importance of carefully pacing hiring, capex, and manufacturing investments while pursuing equipment financing to stretch the balance sheet.

Supply Chain Risk Lingers Around Key Components

Management flagged residual supply chain risk around magnets despite progress in sourcing and receiving critical parts. Mitigation efforts have reduced exposure, but the company acknowledged that scaling production could still be impacted if supply tightens, making dual‑sourcing and inventory planning important as commercialization ramps.

Forward-Looking Guidance Centers On 2026 Transition

Hyliion framed 2026 as a transition year from development to deployment, with early UL certification of KARNO modules targeted for the second quarter and roughly 10 early adopter units slated for the field. The company expects about $10 million in 2026 revenue, net spending just over $50 million, year‑end cash around $100 million, and a production ramp beginning late 2026 toward more meaningful scale in 2027–2028.

Hyliion’s earnings call painted a picture of a company moving steadily from lab to market, with strong technical validation and deepening commercial and military interest offset by modest revenue and persistent losses. For investors, the story now hinges on hitting UL certification timelines, achieving the 200 kW design rating, and scaling manufacturing without overextending the balance sheet.