Thirteen years of Clean6/Xetrov: where is the commercial plant?

At the end of the last chapter I left one question hanging.

What happened when Clean6 tried to turn the vortex idea into a commercial machine?

That sounds like it should be reasonably easy to answer.

The public story of this technology now stretches back more than a decade. There have been companies, brochures, websites, planning applications, environmental permits, partnerships, physical machines and test programs. The technology has had several names and has been proposed for a surprisingly wide range of jobs.

So I went looking for the point where development became commercial operation.

I found plenty of development.

I found physical plant.

I found evidence of testing.

I found proposals for commercial plants.

What I have not found is the thing that matters most: a documented Xetrov/Clean6 installation that progressed into sustained commercial operation, followed by another one demonstrating that the technology could be repeated.

That distinction sits at the centre of this chapter.

The story starts earlier than the company

The earliest public C6 material I have located carries the date 27 November 2012.

That is important because Clean6 Ltd itself was not incorporated until January 2016. The 2012 presentation describes a “C6 Vortex Waste to Energy System”, uses a Clean6 email domain, names Richard Anderson as inventor and major shareholder, and says the technology had been developed “over many years”.

It also contains photographs of what appears to be a substantial fabricated machine: a horizontal refractory-lined chamber on a steel frame with associated ducting and control equipment. This was not merely a concept sketch.

Yet when I tried to trace that machine backwards, the documentary trail stopped.

I have not located the earlier prototypes, development sites, permits, test reports, patents, fabricators or other records that would allow the claimed development history to be reconstructed. Nor have I been able to establish the legal identity of the “C6 Limited” named in the presentation.

There are earlier and overlapping companies associated on the public record with people who later appear in Clean6, but I have found no documentary chain showing that any of them developed or transferred the C6 Vortex.

So the public history begins in an unusual place. In 2012 the machine is already there, photographed and being marketed with detailed performance claims. The development history said to have produced it is not visible in the public record I have found.

What matters for this investigation is what was already being claimed.

The 2012 material described a compact cyclonic waste-to-energy machine capable of operating at up to about 1,700°C, processing up to 1.5 tonnes per hour, accepting a broad range of fuels and producing useful energy.

It also made the remarkable claim that the process produced no bottom ash and no fly ash.

So the basic commercial proposition was already recognisable in 2012.

That gives me a useful starting clock.

Not 2024.

Not 2021.

2012.

Then came Clean6

Clean6 Ltd was incorporated in the United Kingdom on 27 January 2016.

This is the first confirmed corporate vehicle I can trace directly through to today's Xetrov business. Clean6 Ltd eventually changed its name to Xetrov Industries Ltd on 9 December 2024.

There were other associated companies along the way — including C6 Fuel Testing Ltd, Clean6 R&D Ltd, a Swedish Clean6 entity, Xetrov Energy Ltd, Xetrov Services Ltd and others.

Some have clear corporate relationships. Some have obvious names but little public evidence of what they actually did.

I don't think that corporate maze is the important story.

The important point is much simpler.

There is a confirmed corporate line from Clean6 Ltd into today's Xetrov Industries. And across the wider public technology story — from C6 in 2012 to Xetrov in 2026 — many of the headline claims remain remarkably recognisable.

By 2018, archived Clean6 material was describing the horizontal refractory-lined cyclonic machine in considerably more detail.

The familiar selling points were there: very high temperature, compact size, rapid response, broad waste applicability, very low emissions and little or no ash.

The idea was beginning to look like a product.

But an idea that looks like a product is not necessarily a product.

Enter the AR1500

Around 2018–2019 another name appears.

AR1500.

The first direct public use of that model designation I have located is associated with something called Ocean 5.

Ocean 5 is one of the more interesting episodes in this history because it shows how easily the same core machine could become part of a much bigger proposition.

The concept combined a Clean 6 Vortex AR1500 with waste processing, energy generation and water desalination.

Plastic and refuse-derived fuel could be sorted and prepared, fed into the vortex, converted to heat, and that energy could then be used to produce electricity and fresh water.

It was promoted as a modular solution suitable for places facing both waste and water problems.

On paper, it was an appealing combination.

Waste goes in.

Energy and clean water come out.

But I have found no customer installation, site permit, commissioning record or operating Ocean 5 plant.

Project Ocean Ltd was incorporated in August 2018.

It was dissolved in January 2020 without filing accounts.

That does not tell me why the project ended.

It tells me only what the public record shows: Ocean 5 was a documented application of the AR1500 idea, but I have found no evidence that it became an operating installation.

That pattern is going to repeat.

From desalination to power generation

At about the same time, Xetrov Energy was pursuing projects in East Riding in England.

An official council decision dated 4 December 2019 refers specifically to an “AR 1500 Vortex.”

The proposed system would use prepared combustible material and recover energy from the resulting heat.

This is significant because it moves the AR1500 out of brochures and into an official regulatory record.

But this is where terminology starts to matter.

A permit is evidence that somebody obtained permission to do something.

It is not evidence that they subsequently did it.

A planning approval is not a construction record.

Construction is not commissioning.

Commissioning is not routine operation.

And routine operation is not necessarily successful commercial operation.

Those distinctions sound pedantic until a developing technology is being assessed.

Then they become critical.

Pollington: now there was a machine

Pollington is different.

Here there really was physical Clean6/Xetrov plant.

Planning and permit records support that, and in December 2021 a major industrial supplier entered the story.

Siemens announced a partnership with Xetrov for automation and electrical equipment.

The announcement said Xetrov had built and operated its waste-to-energy plant at Pollington.

Siemens was to provide automation, drives, remote I/O, instrumentation and other components for the Clean6 system, extending across equipment including the combustor, hammer mill and boiler, with possible turbine integration.

This matters.

It independently supports the existence of a serious engineering development program. This was no longer just a drawing in a brochure.

There was industrial hardware.

There was control equipment.

There was a prepared-fuel system.

There was heat recovery.

And there was an established industrial technology supplier involved in parts of the system.

But there is another distinction I need to make.

Siemens supplying industrial automation does not mean Siemens certified the combustion technology.

Its announcement repeated a number of Xetrov's performance claims, but it did not contain an independent combustion test, emissions dataset, availability record or commercial acceptance test.

And when I went looking for the normal evidence of sustained operation at Pollington, I hit a gap.

I have not located a public record showing annual waste throughput.

I have not located a public power-export history.

I have not located a customer acceptance record.

I have not located a continuous operating history showing how many hours the plant ran and how many hours it was unavailable.

I have not located a public series of regulator emissions-monitoring results demonstrating operation over time.

I went looking much more widely.

The UK Environment Agency publishes extensive monitoring records for operating waste incinerators. In a separate investigation I searched those records across multiple years and facilities. I found the ordinary evidence trail left by operating incinerators — monitoring returns, exceedances, operating incidents and compliance records. I did not identify an equivalent Xetrov/Clean6 operating history.

There is also a more direct piece of evidence, although I need to describe it carefully.

In July 2026, a resident of Runnymead in Queensland wrote to the Glan Devon project after making his own enquiries with the UK Environment Agency and East Riding of Yorkshire Council. In that email, he reported that Council had advised him that the Pollington site was mothballed, had operated only briefly after being permitted, and had not undergone emissions testing because of that short operating period.

I do not have the original Council correspondence, so I cannot independently verify every part of that account. But it is consistent with what I found elsewhere: a real plant, a permit requiring monitoring, and no public operating dataset showing sustained performance.

The same resident had already asked BYVQ directly for “actual independent emissions data” from operational UK equipment.

BYVQ's response did not provide any.

Instead, it stated that the Xetrov technology and proposed abatement system had been demonstrated to meet IED emission limits and that the project would comply with those limits.

That answers a different question.

A requirement to comply is not evidence that an operating machine has demonstrated compliance.

And there is a particularly interesting description of Pollington in Xetrov's own current public material.

It calls Pollington an “operational pilot.”

That seems the appropriate description based on the evidence I have found.

A real machine.

A real development site.

Evidence of operation.

But a pilot.

That word matters

A pilot plant exists to find things out.

A commercial plant exists to do a job.

The difference is not simply size.

A pilot can demonstrate that the chemistry or physics works. It can test a feed. It can help tune a control system. It can reveal blockages, wear, deposits and unexpected operating conditions.

It can run for a few hours, stop, be inspected, modified and run again.

That is useful engineering.

Commercial operation asks a much harder question:

Can the machine keep doing the job when nobody is running an experiment?

If a commercial plant is supposed to operate 8,000 hours in a year, a successful four-hour test represents 0.05 per cent of that annual operating period.

Even a 100-hour run would represent only 1.25 per cent.

A short test can establish important things.

It cannot establish annual availability.

It cannot reveal every slow deposit build-up.

It cannot tell me the annual refractory replacement rate.

It cannot establish how often an auger jams.

It cannot tell me how the combustion chamber, refractory, residue system and downstream heat-recovery equipment perform after months of operation.

It cannot establish how emissions behave across seasons, fuel changes, startup, shutdown and equipment deterioration.

That is why development evidence and commercial evidence cannot simply be added together and called maturity.

Daventry: another machine, another development program

The next substantial step was Daventry.

In 2022, planning and environmental approvals were obtained for a development involving two Clean6 Vortex units.

The proposed fuels were also becoming more difficult. They included polyurethane dust from the recycling of refrigerators and other appliances; material from waste electrical and electronic equipment (WEEE); automotive shredder residue — the mixed plastics, rubber, foam, fibres and other material left after vehicles are shredded and the recoverable metals removed; and cables and plastics containing persistent organic pollutants (POPs), chemicals that are regulated because they persist in the environment.

These are not simply different names for interchangeable fuels. They can have very different chlorine, metal, mineral, moisture and energy contents.

The design material again depended upon prepared fuel.

Daventry is important because this was not merely another proposed use on a website.

Physical development occurred.

Official 2024 planning material says construction, commissioning and testing were under way.

But notice those words.

Construction.

Commissioning.

Testing.

Not established commercial operation.

The documents described polyurethane testing, followed by planned testing of automotive shredder residue.

That is exactly what I would expect to see in a technology development program.

Try one material.

Measure what happens.

Adjust the machine.

Try another.

That is how an emerging technology becomes a mature one.

But it is evidence of the journey.

It is not evidence that the journey has finished.

What I have not found are the results.

I have found no published Daventry test series showing how emissions changed between fuels, no sustained operating record, and no complete public performance dataset. Nor have I found those results presented in Xetrov's marketing material.

There is an odd continuity here. The 2012 C6 presentation contained an emissions graph, but its vertical scale had no units. More than a decade later, there was now a physical development plant and identified fuel-testing program — but I still could not find the underlying operating dataset needed to assess the claims.

That absence becomes particularly important because one result from a polyurethane-dust test eventually travelled halfway around the world and became part of the evidence base for Glan Devon.

The test that eventually reached Queensland

One of those Xetrov test programs becomes directly relevant to Glan Devon.

The Queensland regulator records a Xetrov emissions trial using polyurethane dust at approximately 70 per cent load.

That is significant because it provides something much more useful than a marketing claim: evidence that an actual Xetrov machine was tested under an identified operating condition.

But it is still a test.

And the limits of that test matter.

The Glan Devon proposal is not based simply on burning polyurethane dust at 70 per cent load.

The proposed Queensland fuels include agricultural waste HDPE and potentially treated timber.

SARA therefore questioned whether the polyurethane trial was representative of the proposed fuels and whether simply multiplying the measured results by 1.42 adequately represented full-load emissions.

I’ll talk more about that 1.42 factor later. It is one of the most important aspects of this story.

For now, the important point is more fundamental.

In 2026, the Australian assessment was still relying on a partial-load trial using one prepared fuel as an important part of the evidence base for the Xetrov system.

That tells me something about the maturity of the public evidence.

Meanwhile, the possible jobs kept multiplying

While the operating evidence developed slowly, the range of proposed applications expanded much faster.

This is perhaps the most striking part of the history.

The C6/Clean6/Xetrov platform has been proposed, at various times, in connection with:

· plastic and refuse-derived fuel;

· waste-to-electricity;

· heat and steam;

· desalination;

· WEEE;

· automotive shredder residue;

· POP-containing waste;

· agricultural waste;

· poultry waste;

· medical waste;

· remote and refugee-camp waste management;

· district or process heat;

· biosolids drying and fertiliser manufacture.

There have also been broader promotional references to hydroponics and hydrogen-related possibilities.

Not all of these were actual projects.

That distinction matters too.

A market application shown on a website is not an installation.

A project announcement is not a plant.

A planning application is not a project delivered.

When I restrict the record to identifiable site-specific or named initiatives, I get approximately six or seven depending upon whether two 2019 East Riding records represent separate developments.

Of those, only Pollington and Daventry can presently be demonstrated from the records I have found to have had physical Clean6/Xetrov plant.

And yet the problems the technology was being proposed to solve kept spreading.

Ocean 5 wanted the vortex to help solve waste disposal, electricity and fresh-water supply.

Pollington emphasised waste-to-heat and electricity.

Daventry moved towards destruction of difficult prepared waste streams.

Hillhouse proposed multiple machines producing steam and electricity.

And now Glan Devon wants essentially the same technology family to become a reliable industrial heat source for drying biosolids so they can be manufactured into fertiliser.

The claimed applications changed substantially.

The visible changes to the core machine were much narrower — until the 2024 patent begins to show us some of the engineering changes in detail.

A solution looking for the right problem

There is nothing inherently wrong with that.

A new technology often begins with a capability before its best market is known.

The steam engine was not invented for every eventual use of steam power. Lasers famously existed before many of their most valuable applications were discovered.

Finding the right application is part of commercialisation.

So I don't regard the changing Clean6/Xetrov applications as evidence of failure by itself.

But it does change the question I ask.

If one machine is successively proposed for electricity generation, desalination, difficult-waste destruction, process steam and biosolids drying, I want to know which parts of the technology have actually been demonstrated for each job.

Because those jobs impose different requirements.

A machine used intermittently to destroy a difficult waste does not necessarily need the same availability as a heat source feeding a continuous industrial dryer.

A demonstration that polyurethane dust burns successfully does not establish performance on agricultural HDPE.

Producing heat is not the same engineering task as reliably supplying heat of the required temperature and flow to another manufacturer's process.

The broader the claimed application envelope becomes, the more important the operating evidence becomes.

And that evidence has not broadened at anything like the same rate.

Hillhouse: scaling before replication

In 2023 another proposed development appeared at Hillhouse Enterprise Zone near Fleetwood in Lancashire.

This one contemplated four vortex machines, with a combined design throughput of around 24,000 tonnes per year and steam/electricity production.

An environmental screening decision exists.

I have not located subsequent evidence establishing full planning approval, construction or operation.

Again, the distinction is simple.

Hillhouse demonstrates an intention to scale the concept.

It does not demonstrate that the scale-up occurred.

And this produces an unusual development history.

Normally I would expect to see something like:

prototype → pilot → demonstration plant → first commercial plant → operating history → repeat plant → larger deployment

The public Clean6/Xetrov record looks less linear.

There are pilots.

There are permits.

There are proposed plants.

There are different applications.

There is physical equipment at two sites.

There are tests on different materials.

There are proposals for multiple machines.

But I cannot yet find the clean transition into sustained commercial operation followed by replication.

Then the machine changed again

There is another date in this chronology that I find difficult to ignore.

18 September 2024.

That is the priority date of Xetrov Services' recent patent application.

The patent describes changes involving particle movement, residue collection and removal, adjustable air injection, cleaning access and refractory maintenance.

I am deliberately not going into those details here.

They deserve their own chapter.

But their position in the chronology matters.

By 2024, the technology proposition had already been public for more than a decade.

Pollington had been built.

Daventry was being commissioned and tested.

And Xetrov was still filing new intellectual property dealing with some very practical parts of making the combustor operate and remain maintainable.

That does not mean the earlier machines failed.

A mature manufacturer can continue improving a successful product indefinitely.

But neither can a new patent be treated as evidence that the revised design is already commercially proven.

I have found no public evidence establishing that the 2024 patented configuration has itself completed a sustained commercial operating campaign.

And then came Glan Devon

By 2025–2026, the technology had found another proposed role.

This time in Queensland.

At Glan Devon, the Xetrov is not primarily being proposed as an electricity generator or a stand-alone waste destruction plant.

Its central job is to produce process heat.

That heat is needed to dry biosolids.

The dried material then becomes part of the proposed fertiliser manufacturing process.

So after more than a decade of development, the Xetrov technology has arrived in a project where its reliability matters in a slightly different way.

It is no longer enough for the vortex itself to work.

Another industrial process is depending upon it.

And now, Version 4

There is one final piece of the chronology that puts all of this into perspective.

The May 2026 Glan Devon material identifies the proposed machine as the Xetrov Vortex Version 4 — V4.

I don't know what Xetrov regards as Versions 1, 2 and 3, and I have found no public document defining those generations. I therefore cannot assume that each represents a complete predecessor machine.

What I do know is what the V4 trial is supposed to do.

The applicant says the trial will generate operational, emissions and performance data for future permitting and scale-up. It will optimise combustion using AI-assisted control of feed rates and airflow. It will identify optimal waste-blending strategies. And it is explicitly intended to “prove and refine operating conditions” while “establishing commercially effective operating parameters.”

Read those words again.

Prove. Refine. Optimise. Identify. Establish.

Those are development words.

There is nothing wrong with them. That is exactly what a serious technology trial should do.

But they are not the words I would expect to describe a mature industrial product whose operating envelope has already been established through years of commercial use.

Fourteen years after the first C6 presentation I located, the proposed Queensland trial is still intended to prove and refine operating conditions, optimise controls and blending, and establish commercially effective operating parameters.

Where is the commercial plant?

After tracing the public record from 2012 to 2026, this is where I end up.

I can establish a technology proposition going back to 2012.

I can establish Clean6 as a corporate vehicle from 2016 and its direct continuation into Xetrov Industries.

I can establish the AR1500 designation.

I can establish Ocean 5 as a real proposed application.

I can establish permits.

I can establish physical equipment at Pollington and Daventry.

I can establish industrial automation involvement from Siemens.

I can establish commissioning and testing.

I can establish a polyurethane-dust trial.

I can establish later proposed projects and a growing range of claimed uses.

What I cannot establish from the public record I have searched is a Xetrov/Clean6 plant operating for a sustained commercial period, with documented throughput, availability, maintenance history, emissions performance and customer acceptance — followed by another commercial plant doing the same thing.

That is not a finding that no such evidence exists privately.

It is not a finding that the technology cannot work.

And it is certainly not a finding about the motives or conduct of any individual involved.

It is a much narrower finding.

The public commercial claims have run ahead of the public commercial evidence.

That matters at Glan Devon because the distinction between an idea, a pilot and a commercial product is no longer academic.

BYVQ is proposing to place this machine inside a real industrial process.

The biosolids will keep arriving.

The dryer will require heat.

Residues will have to be removed.

Maintenance will require downtime.

Fuel will vary.

The emissions-control system will have to work.

And the fertiliser process downstream will depend upon what happens upstream.

Before treating Xetrov as an established industrial heat source, I would expect the fourteen-year development history to answer a fairly ordinary question:

Where has this machine already done that job, continuously and commercially?

So far, I have not found the answer.

And the next part of the story makes that absence more interesting.

Because in 2024, Xetrov filed a patent showing exactly what its engineers were still working on.

Next Chapter