Hyliion ($HYLN) going the SpaceX route: Can a Pentagon pipeline unlock the commercial market?

Is a 300% surge justified, and should you invest in Hyliion right now?

While Bloom Energy ($BE) is out there racking up real, multimillion-dollar contracts to deploy fuel cells for data centers, retail investors have driven Hyliion Holdings ($HYLN) up over 300% year-to-date. The crowd’s logic is painfully simple: AI demands gigawatts of power, the grid is fried, so you buy anything with the word “generator” on its presentation slides.

The irony is that $HYLN is essentially a zombie company that just threw in the towel and killed off its legacy powertrain business for heavy trucks. They are currently touting a $400 million backlog, but if you actually crack open their financial filings, this entire “pipeline” consists of non-binding LOIs, meaning entirely unbacked promises. Commercial revenue is flat zero, and the business is keeping the lights on solely through R&D life support thrown their way by the Pentagon.

And yet, in a market where software moats are evaporating and AI image generators are eating Adobe’s lunch, investors are desperate for a moat in the physical world. $HYLN promises the KARNO linear engine, which pipes 800V DC power straight into AI racks and handles multi-fuel switching from gas to diesel on the fly.

Let’s dive in and see whether there is real, tangible hardware here, or if we’re just looking at another venture-backed simulacrum living on government subsidies.

History

The story of Hyliion is a textbook saga of a venture-backed startup smashing face-first into the brutal reality of heavy manufacturing, only to slickly rebrand itself just in time to ride the AI wave.

The company stumbled onto the public markets in 2020 via a SPAC merger at the absolute peak of the “green tech” bubble, back when retail investors were throwing cash at any EV truck maker capable of coasting down a hill. Founder Thomas Healy. then not even 30 years old, promised Wall Street a revolution: electrified and hybrid powertrains for Class 8 heavy-duty trucks. The game plan was simple: take existing rigs from Peterbilt or Kenworth, rip out the diesel engines, drop in their proprietary battery packs and software, and sell them to logistics fleets.

FuelCell Energy (FCEL) Is Surfing a Data Center Wave It’s Not Actually On

But reality proved far more cynical than their pitch decks. Over the next eight years, Hyliion hit every conceivable wall: capital expenditure hell, regulatory bottlenecks, and a total refusal from fleet operators to buy heavy batteries that slaughtered payload capacity and required a charging infrastructure that flat-out didn’t exist.

By late 2023, the writing was on the wall. The project was dead. Having burned through hundreds of millions of investor dollars and locking in massive losses, management made the only logical move left, they completely liquidated the powertrain business. They spent the first quarter of 2026 scrapping old machinery and selling off legacy assets, leaving them with nothing but a tiny, non-recurring credit on the balance sheet.

In any rational universe, this is where the story ends in chapter 11. But Healy had one final card to play. Back in 2022, they had quietly scooped up the rights to the KARNO technology from GE Additive for pennies on the dollar, a compact linear generator originally designed for aerospace applications.

When Silicon Valley suddenly woke up to the realization that training massive LLMs was about to break the US power grid, Hyliion pulled off an emergency pivot. They repackaged General Electric’s aerospace tech into a sleek enclosure, slapped the label “modular power plant for data centers” on it, and marched back to retail investors with a fresh mantra: “Forget trucks. We are here to feed NVIDIA chips.”

Investors took the bait, and the zombie stock rose from the grave.

NVIDIA’s Robotics Push: The Stocks Worth Buying Right Now