The Scale-Up Question

If you spend any time discussing Aduro Clean Technologies with a thoughtful investor, you eventually arrive at the same objection. It usually sounds like this:

“This is a binary, pre-revenue, scale-up bet on chemistry that hasn’t been proven at commercial scale, with first real revenue in the back half of the decade, in a sector where the graveyard is full of companies whose bench results didn’t survive the jump to continuous operation.”

That is a fair, well-informed summary. It’s also, in my view, the right thing to worry about. Not the TAM, not the policy tailwind, not the analyst price targets, the scale-up gate. If the chemistry doesn’t hold when you go from kilograms an hour to thousands of tonnes a year, nothing else on the page matters.

So rather than wave that concern away, I want to take it head-on: what the risk actually is, what evidence we have so far, why management and many long-term holders weigh it lower than the sector’s track record would suggest, and, just as importantly, where the risk genuinely still lives.

Let me be clear up front about my bias: I own the stock, it’s a large position, and I’m involved with the company in an advisory capacity. Read everything below with that in mind, and do your own work.

First, name the gate honestly

Here’s what we actually have as of now, and what we don’t.

What we have is the June 2026 data from the Next Generation Process (NGP) Pilot Plant: 86% liquid hydrocarbon recovery over the steady-state window, with 85% of that liquid landing in the C20-and-below carbon range, the band associated with naphtha-cracker feed. The number I care about most isn’t the yield, though. It’s that steady-state conditions were re-established within roughly two hours after deliberate operating changes. That’s the first real evidence that the process is controllable in continuous operation, not just repeatable in a batch flask. Separately, an independent third-party steam cracker processed the oil and reported ethylene and propylene yields comparable to fossil feedstock.

What we do not have is the thing that actually clears the gate: sustained, continuous operation at commercial scale. The pilot runs in multi-day campaigns at roughly 10 kg/hr. The First-of-a-Kind (FOAK) plant planned for Chemelot is designed for about 10,000 tonnes per year and will need to run for weeks at a time. That jump, solid handling, heat transfer across a physically larger reactor, and feedstock consistency when the input is real-world contaminated garbage rather than curated test batches, is precisely where the clean-tech graveyard gets filled.

I don’t think that risk is retired. What I think the pilot data does is move the risk from one category to a smaller one: from “the chemistry is unproven” to “the chemistry is proven, but unproven at scale.” Those are genuinely different things to underwrite. The first is a science bet. The second is an engineering bet. Engineering bets fail too, but they fail less often, and for more diagnosable reasons, than science bets.

Why is the chemistry itself the de-risked part

The strongest reason to weigh the science bet as largely settled is the distance already travelled.

Aduro has been developing this chemistry since 2011. It went from vial-scale batch reactors to a continuous-flow plastic reactor commissioned in 2023 with hundreds of runs on polyolefins to today’s continuous NGP pilot. The single hardest transition in all of chemical process development, moving a reaction out of a batch flask and proving it works in continuous flow, is the one Aduro has already made.

Aduro’s technical team has spoken to this progression of risk directly. On a recent facility tour, Aduro’s Birendra Adhikari identified the biggest scaling risk as the transition from small vials to the next-generation continuous system and characterized the subsequent step, from pilot to commercial unit, as proportionally lower risk.1Chief Scientist Anil Jhawar has made the same point: that the chemistry itself is proven, and that he doesn’t see the core process chemistry as the technology risk; the remaining work is chemical engineering, not chemistry.1

To understand why the chemistry scales so predictably, it helps to contrast it with the sector’s default: pyrolysis. Pyrolysis relies on thermal energy, essentially baking the plastic in a massive oven. Like baking a pizza, heat distribution is naturally uneven. Scaling up to a larger oven doesn’t solve the problem of uneven heat transfer; it just leaves you with burned edges and an undercooked center (or, in chemical terms, unpredictable, messy yields).

Aduro’s hydrochemolytic process, by contrast, is a water-based, catalytic reaction. Think of it less like baking a pizza and more like cooking pasta in boiling water. Water is a superior heat conductor, creating a far more even reaction environment. Scaling it up is closer to using a bigger pot; the chemistry behaves the same way. The technical team has gone so far as to describe the process as getting simpler and cleaner as it moves toward commercialization, rather than more fragile.2

Why the engineering bet is smaller than it looks

Three structural features make the remaining scale-up more tractable than the sector average.

1. The equipment is off-the-shelf, not custom. This is the one most people miss. Aduro isn’t inventing a novel machine and hoping it scales; it’s running its proprietary chemistry inside proven, commercially available hardware. Company representatives have addressed this directly, describing the equipment as standard rather than exotic and framing the differentiator as the core process itself rather than a custom-built machine; they’re not reinventing the wheel in hardware.2 The technical team reiterated on a recent tour that they rely on off-the-shelf equipment of the kind regularly used in petrochemical operations.1 Standard equipment has known scaling curves. Custom equipment doesn’t.

2. The absolute jump ahead is a more understandable kind of jump. Going from roughly a couple of hundred tonnes/year of pilot throughput to 10,000 TPA at FOAK is a big step in magnitude. But it’s a step within continuous-flow operation using standard unit operations, not another format change. The genuinely treacherous transition is behind them. What remains is scale-up engineering: bigger vessels, more robust feed handling, sustained runtime. Hard, capital-intensive, and not guaranteed but a category the process-engineering world knows how to attack.

3. They’re not scaling alone, and the partners are the ones who scale for a living. This is where the counterparties stop being logos on a slide and start being risk-reducers:

• External engineering scale: Company representatives have noted that Aduro is working with established external engineering firms that have built commercial units many times the size of what Aduro is constructing at the pilot scale.2
• Shell GameChanger: Beyond funding, graduation from this program provided third-party technical validation and market direction from a major industry stakeholder engaged with the scale-up path.3
• Siemens: Supplies the industrial automation and control system (SIMATIC PCS neo), chosen to ensure that control strategies developed at the pilot scale translate directly to larger-scale facilities.
• Ortessa Groep: Signed a non-binding MOU (June 17, 2026) to evaluate a dedicated feedstock logistics center at Chemelot sourcing, sorting, cleaning, and delivery of specification-ready feedstock directly targeting the single most underrated scale-up killer: inconsistent input.
• TotalEnergies: Working alongside Aduro through technology evaluation and cooperation arrangements.

None of these relationships guarantees anything. The Ortessa arrangement is a non-binding MOU, not a signed supply contract, and I’d hold you to reading it that way. But the collective signal matters: the companies that would actually do the scaling engineering, automation, feedstock logistics, and petrochemical integration are in the room and engaged, not being pitched cold.

The part that keeps me honest

Here’s what I’m not claiming.

I’m not claiming FOAK will run clean for weeks on real-world contaminated waste. That is still the gate, and it is still unproven at that scale. Feedstock variability, trace-contaminant accumulation on reactor walls over long runs, and solids-handling at higher throughput are real, and a multi-day campaign window doesn’t prove a 30-day run. The whole reason the NGP pilot exists is to surface these problems before FOAK, and the development timeline for genuinely new industrial processes is measured in years, not quarters.

I’m also not claiming an information edge. Everything above is from public filings, press releases, independent research, and public corporate updates. My proximity to the company doesn’t give me a clearer view of the FOAK outcome than you can get from the same disclosures, and if it ever did, I couldn’t act on it or post about it anyway.

What would actually change my mind on this specific question:

1. The pilot fails to sustain steady-state as campaign lengths extend toward continuous operation (e.g., recurring fouling, coking, or control instability on longer runs).
2. FOAK slips materially or is redesigned in a way that signals the current process economics don’t hold at 10,000 TPA.
3. The feedstock logistics and pre-treatment work (Ortessa and others) reveal that real-world contaminated input degrades yields below the economics the licensing model needs.

Any one of those would tell me the engineering bet is harder than I currently think.

So where does that leave the scale-up worry?

Roughly here: the science bet, does this chemistry work in continuous flow? has largely been answered, and answered across increasingly realistic feedstocks. The engineering bet can it run for weeks at 10,000 TPA on real garbage? has not, and won’t be until FOAK actually operates. What’s changed over the past year is that the risk has migrated from the first bucket to the second, and the second is being de-risked with standard equipment and industrial partners rather than improvised alone.

“Unproven chemistry in a founder’s lab” and “proven chemistry being scaled inside standard equipment with Siemens, Ortessa, and Total engaged” are different risk profiles. Both can fail. But if you’re going to underwrite a pre-revenue hard-tech name at all, the second is the version you want to be underwriting, and it’s the version I think is actually on the table here.

That is not the same as saying it’s derisked. It’s saying the nature of the remaining risk is narrower, more diagnosable, and more heavily supported than the “bench-to-continuous graveyard” framing implies. Whether that’s enough for you depends entirely on your tolerance for a binary that won’t fully resolve until the back half of the decade.

For me, it is. For plenty of sensible people, it won’t be and watching this one from the sidelines until the FOAK gate clears is a perfectly rational call. You’d give up meaningful upside for a lot less uncertainty, which, for most portfolios, is the right trade.

This is not financial advice. I own shares of $ADUR, which represent ~30% of my portfolio, so I am biased. This piece is for informational and educational purposes only, is not a recommendation to buy or sell any security, and I am not a registered investment advisor. All figures are drawn from Aduro’s public disclosures, press releases, and independent third-party research, and are point-in-time as of writing. Do your own work.