For a paper mill, electricity is normally discussed as a cost.

This week in eastern France, it became something more fundamental:

the difference between producing paper and producing nothing.

Papeteries du Léman in Publier, Haute-Savoie, was forced into a complete production stoppage after three of the four legs of a high-voltage electricity pylon were deliberately cut on September 7.

The damaged structure carried a 63 kV line serving the Publier industrial area. Grid operator RTE shut the line for safety reasons, cutting electricity to Papeteries du Léman as well as the nearby Evian bottling plant. An investigation has been opened, and RTE has filed a complaint. No publicly confirmed motive or perpetrator has been identified in the reporting reviewed for this article.

The paper mill remained without electricity for close to 48 hours.

And that produced a number that gives this incident much greater industrial significance.

Papeteries du Léman General Manager Stéphane Barbereau told TF1 that the outage was costing the company approximately €9,000–€10,000 per hour. After more than 48 hours, he estimated the impact had already exceeded €480,000.

This is therefore not simply a local criminal-damage story.

It is a reminder that a modern paper mill can invest heavily in energy efficiency, machinery and product diversification while remaining critically dependent on infrastructure located completely outside its factory fence.

First, an Important Update: Power Has Been Restored

Initial reports on September 9 said RTE was working toward a temporary bypass and hoped to restore supply by September 10.

The situation moved faster.

According to TF1 and Le Dauphiné Libéré, electricity was restored to affected industrial users at approximately 21:00 on Tuesday, September 8, after nearly two days without power.

That does not mean four paper machines instantly returned to normal production.

Barbereau said the mill first had to inspect equipment for damage before restarting. TF1 reported that some faults had been identified, although management said they were not considered prohibitive to restarting operations. Production was therefore expected to recover progressively rather than by simply turning the electricity back on.

That distinction matters in paper manufacturing.

Restoring grid power and restoring stable paper production are two different events.

A Paper Machine Does Not Like an Unplanned Stop

Paper production is a continuous industrial process.

Stock preparation feeds furnish toward the machine.

Pumps circulate water and fiber.

Vacuum systems remove water.

Presses, dryer sections and drives maintain a synchronized web.

Reels and finishing equipment depend on stable upstream production.

When electricity disappears without a planned shutdown sequence, the consequences can extend beyond the tonnes not produced during the blackout.

An abrupt stop can leave paper in the machine, interrupt process flows and require extensive inspection and cleaning before production is safely rebuilt.

That does not mean Papeteries du Léman suffered every possible type of process damage.

The company has not published a detailed technical assessment of the outage.

But its need to inspect the plant before restarting shows why outage duration alone does not measure the full disruption.

A 48-hour loss of electricity can generate more than 48 hours of production impact.

This Was Not a Small Niche Workshop

The scale of the operation also matters.

Papeteries du Léman specializes in lightweight papers covering applications including:

baking and cooking papers, lightweight packaging papers, thin printing grades, rolling papers, tissue or silk papers, and other specialty products.

Its current corporate website lists four paper machines and 85,000 tonnes of production capacity within the PVL operating structure.

The Publier operation has also undergone a major strategic shift.

PDL said in 2025 that packaging papers had grown to approximately two-thirds of the volume produced at its Publier facility, with around 70% of production exported.

That means the outage does not concern only traditional lightweight printing grades.

It touches a mill increasingly positioned toward food packaging and specialty papers, including the Primabake baking-paper business.

PVL has previously announced plans to expand Primabake capacity to about 65,000 tonnes per year by the end of 2027, including additional production on PM6 at Publier and cooperation with sister company Papeteries des Vosges.

That makes the September outage particularly awkward.

The mill is investing in markets expected to support its future.

Yet all four production machines can still be affected by one upstream electricity-infrastructure failure.

€480,000 Is Only the First Number

The €480,000 figure deserves careful interpretation.

Barbereau described losses of approximately €9,000–€10,000 for every hour the plant remained stopped.

At 48 hours, that arithmetic produces roughly €432,000–€480,000, broadly consistent with the figure he gave TF1.

But this should not automatically be treated as a final accounting loss or lost profit.

The company has not yet published:

its final financial impact;

tonnes of production lost;

customer-order delays;

equipment-repair costs;

insurance recovery;

additional restart expenses;

or whether all machines returned at the same time.

The eventual economic impact may therefore differ substantially from the initial €480,000 estimate.

The responsible conclusion today is narrower:

management says an outage lasting roughly two days had already created more than €480,000 of impact before the production system was fully restored.

For a relatively small specialty-paper producer, that is substantial.

The Most Interesting Number May Be €10,000 Per Hour

Annual capacity numbers can sometimes make a paper mill feel abstract.

€10,000 per hour does the opposite.

It illustrates the value of continuous operation.

A mill has employees on payroll.

Customer contracts continue.

Raw-material inventories remain tied up.

Fixed costs do not disappear.

Capital equipment remains depreciating.

And the product that was expected to come off the machine does not exist.

For an integrated or highly energy-self-sufficient pulp mill, some electricity-security risk may be mitigated by internal generation.

A specialty-paper operation dependent on external grid power can face a different exposure.

Once the incoming power supply disappears, machine efficiency is irrelevant.

A paper machine running at zero speed has no energy-efficiency advantage.

That is why energy resilience deserves to be discussed separately from energy efficiency.

Europe Has Spent Years Talking About the Price of Electricity

Paper producers across Europe have repeatedly warned about energy costs.

Gas prices.

Electricity tariffs.

Carbon costs.

Energy hedging.

Cogeneration.

Electrification.

Renewable power.

Those issues remain financially important.

But Papeteries du Léman exposes another dimension:

availability.

The cheapest electricity contract in the market has little value during a physical grid interruption.

Likewise, ISO 50001 certification and internal energy-efficiency programmes can reduce consumption but cannot guarantee continuity of the external transmission system.

PDL itself has emphasized energy management and holds ISO 50001 certification covering its activities.

That makes the incident a useful reminder that industrial energy strategy increasingly has at least three separate dimensions:

cost, carbon and resilience.

Improving one does not automatically solve the other two.

Should a Paper Mill Have Backup Power?

This is where an easy conclusion would become misleading.

After a €480,000 outage, it may seem obvious to say the mill should simply install backup generation.

For four paper machines, the engineering and economics are considerably more complicated.

Emergency generators can support critical safety systems, control equipment, lighting, IT, pumps or controlled shutdown functions.

Supplying enough electricity to keep an entire paper manufacturing operation running normally is a very different proposition.

The power requirement can be substantial, and a backup system capable of supporting full manufacturing load could require significant capital, fuel infrastructure, switching equipment and regulatory approvals.

The publicly available information does not disclose PDL’s peak electricity demand, backup-generation capacity or electrical architecture.

So it would be inappropriate to claim that a particular backup solution could have prevented the production stoppage.

The better question is:

which loads must remain powered to reduce damage and accelerate restart even when full paper production cannot continue?

That is a resilience question worth asking at every continuous-process mill.

The Failure Happened Outside the Mill Boundary

This is probably the most uncomfortable part of the case.

Paper mills spend heavily controlling risks they own.

Fire protection.

Machine guarding.

Preventive maintenance.

Cybersecurity.

Boilers.

Electrical rooms.

Chemical storage.

Water treatment.

Quality systems.

Yet the component that stopped Papeteries du Léman was not one of its paper machines.

It was a pylon located away from the factory.

That makes infrastructure dependency an unusual form of production risk.

A manufacturer may operate its own plant extremely well and still be exposed to:

electricity transmission,

natural-gas networks,

water supply,

roads,

railways,

ports,

telecommunications,

and external digital infrastructure.

The more continuous the manufacturing process, the more important those dependencies become.

One Pylon Also Stopped Another Major Factory

The outage reinforces that point because PDL was not alone.

The same damaged line also affected the nearby Evian bottling facility, which local reporting says employs around 1,200 people.

TF1 described roughly 1,500 workers across the affected major industrial sites as being caught up in the disruption.

That concentration matters.

A single piece of transmission infrastructure was capable of affecting two unrelated manufacturing industries simultaneously.

This is a classic infrastructure-concentration problem.

The factories may have different products, customers, equipment and supply chains.

At the grid connection point, however, their risks converge.

The Sabotage Question Should Not Become Speculation

There is a broader European discussion about attacks on energy infrastructure, particularly after several incidents involving grids and other critical assets.

But this specific case needs to remain evidence-led.

Three of four supports on the pylon were deliberately sawed through.

RTE filed a complaint.

An investigation is underway.

That supports describing the incident as deliberate sabotage or malicious damage.

What the available evidence does not establish is:

who carried it out;

why;

whether an organization was involved;

whether the paper mill itself was the intended target;

or whether it has any connection with other European infrastructure attacks.

Those conclusions should not be invented.

The industrial consequences are significant enough without adding an unsupported motive.

Specialty Paper Supply Can Be Harder to Replace Than Tonnes Suggest

There is another downstream issue.

PDL’s annual capacity is small compared with Europe’s largest commodity-paper mills.

But specialty-paper disruption cannot always be evaluated by tonnage alone.

A customer buying a specific lightweight baking, packaging or technical grade may have already qualified:

basis weight;

surface characteristics;

food-contact performance;

silicone or other functional treatment;

printing behavior;

machine runnability;

conversion properties;

and product dimensions.

Another mill may technically produce paper.

That does not mean it can immediately produce the same qualified grade.

This is one reason outages at specialty mills can matter disproportionately to individual customers even when overall market capacity appears ample.

PDL says its papers serve hundreds of customers and its portfolio includes lightweight papers between approximately 10 and 60 g/m².

There is no evidence yet that the September shutdown has caused customer shortages.

The outage was relatively brief and power has been restored.

But buyers of highly specified grades will be watching how quickly normal production and deliveries return.

There Is an Interesting Contrast With PDL’s Expansion Strategy

Papeteries du Léman has been trying to move away from dependence on mature thin-print markets and toward more packaging applications.

That is sensible diversification.

Its Primabake expansion is one example.

Its investments in rewinding and specialty-paper development are others.

But expansion normally focuses attention on additional capacity.

More tonnes.

More converting capability.

More customers.

The September incident highlights the other half of growth:

the more valuable the production base becomes, the more expensive every hour of lost availability becomes.

A mill planning expansion therefore has to consider not only:

“How much can we make?”

but also:

“What can stop us from making it?”

That changes the investment conversation.

Reliability Should Be Considered Beyond the Paper Machine

Paper companies already monitor machine availability closely.

Uptime.

Breaks.

Planned maintenance.

Unplanned downtime.

Speed losses.

Quality losses.

Those are standard mill-performance metrics.

The Papeteries du Léman incident suggests another KPI may deserve more attention:

infrastructure availability.

How many independent power feeds exist?

Which systems can operate during loss of the primary connection?

How quickly can the mill execute a controlled shutdown?

How quickly can external power be rerouted?

Which spare electrical components are available?

What is the restart sequence after an uncontrolled outage?

How long can critical systems operate independently?

Not every answer requires building a second power station.

Some involve contingency planning, grid coordination, electrical architecture and emergency procedures.

But after an outage carrying a reported cost of roughly €10,000 every hour, those questions have a clearer economic value.

This Was a 48-Hour Warning, Not Just a 48-Hour Outage

As of the latest reporting, the most immediate crisis appears to be easing.

Power returned Tuesday evening.

The damaged pylon has been secured.

Papeteries du Léman has been assessing its equipment and moving toward a progressive production restart.

That is good news for the mill and its customers.

But restoring the electricity should not end the industry discussion.

European paper producers are spending heavily on decarbonization, efficiency, new product development and packaging-paper growth.

Those investments assume that the underlying industrial infrastructure remains available.

Papeteries du Léman has just demonstrated how quickly that assumption can fail.

A mill with four paper machines and a growing specialty-packaging business was effectively disconnected from production because three pieces of steel on an external pylon were cut.

That is a remarkably asymmetric risk.

The physical damage was concentrated in one small part of the grid.

The industrial impact spread immediately across multiple factories and hundreds of employees.

For paper producers, that should move energy resilience higher on the agenda.

Because the next threat to mill economics may not arrive as another €20/MWh increase in electricity prices.

It may arrive as no electricity at all.

For mill managers and engineering teams, the question is worth asking now: if your main grid connection disappeared tonight, which parts of your mill could remain safe, how quickly could you restart—and what would every hour without production actually cost?

Last Updated on 10/09/2026 by Jota Machinery