380,000 Tonnes of Softwood Pulp Capacity Idled: Are Low Prices Forcing Capacity Rationalisation?

SUPPLY-SIDE COORDINATES

380,000 tonnes　Annual NBSK volume removed from the market, as disclosed by Domtar

Nearly C$500 million　Domtar’s cumulative investment since acquiring the site in 2010

Europe +8% / China −3%　Metsä’s quarter-on-quarter change in average invoiced softwood pulp prices in Q2 2026

Scope:The three figures come from separate corporate disclosures by Domtar and Metsä. They should not be read as a measure of global net capacity withdrawal or as delivered prices in China.

RESEARCH QUESTION

Is the 380,000-Tonne Idling an Isolated Event or Evidence of Cost-Curve Rationalisation?

On 20 August, Domtar announced the indefinite idling of Canada’s Howe Sound pulp mill and Bayview Fibre wood-chip facility, removing approximately 380,000 tonnes per year of NBSK from the market. Around the same time, Europe also saw permanent softwood pulp closures, market-driven downtime and temporary curtailments.

This article does not forecast pulp prices. It addresses a more useful question: when suppliers begin to cut output voluntarily, which capacity exits first, which fibre grades are still expanding, and which indicators should paper mills use to assess whether the market is bottoming or turning?

Sources:Domtar announcement; Metsä Q2 2026

Pulp prices have not yet turned, but higher-cost capacity has already begun to contract.

01 SUPPLY STATUS

Market Withdrawal Is Not a Single Action—Different Operating States Must Be Distinguished

Analytical boundary:These four operating states cannot simply be added together as a measure of global net capacity withdrawal, but collectively they point to active supply-side adjustment.

02 COST CURVE

Why Does Higher-Cost Capacity Come Under Pressure First?

Three variables recur throughout company disclosures:weak demand, low prices and expensive wood fibre.When selling prices fall below sustainable cash costs, continued production can add inventory, logistics expense and working-capital pressure. Downtime sacrifices revenue, but it can reduce cash losses.

Domtar cited weaker Asian demand, persistently low global pulp prices and declining access to affordable local fibre. Stora Enso said European demand for softwood pulp has fallen since 2023, while prices have weakened and wood costs have risen, leaving Skutskär L3 loss-making.

The capacity that exits first is therefore usually not the entire mill base, but marginal capacity with long wood-supply radii, high fibre costs, limited product differentiation and heavy exposure to market pulp prices. This article describes such assets as “higher-cost capacity”; it does not rank individual producers by unit cost.

Sources:Stora Enso Skutskär; Metsä Joutseno

03 FIBRE MIX

Why Does a 380,000-Tonne Withdrawal Not Automatically Mean Pulp Prices Have Turned?

First, the capacity leaving the market is NBSK, not all market pulp. Suzano’s Cerrado eucalyptus pulp project has nominal capacity of approximately 2.55 million tonnes per year; UPM Paso de los Toros, approximately 2.10 million tonnes per year; and Arauco’s planned Sucuriú project, 3.50 million tonnes per year. Large-scale hardwood pulp capacity therefore remains in operation or under construction.

Softwood pulp typically provides strength through its longer fibres, while hardwood pulp contributes more to surface quality and sheet formation. The two can be blended in some grades, but they are not fully interchangeable. Overall fibre availability may therefore continue to restrain a rapid price recovery. The key issue is the grade mismatch between new South American supply and North American capacity withdrawal—not a simple subtraction of tonnage.

Second, regional demand is not moving in sync. Metsä reported that average invoiced softwood pulp prices in Europe rose 8% quarter on quarter in Q2 2026, while prices in China fell 3%. UPM reported that, over the same period, average market prices in China rose 4% for NBSK but fell 4% for BHKP. Pulp grades and regional markets are already diverging.

Sources:Suzano Cerrado; UPM Paso de los Toros; Arauco Sucuriú; UPM market-price data; pulp-grade characteristics

04 REVERSAL TEST

A Genuine Price Inflection Requires Four Conditions

05 CHINA DECISION

What Should Chinese Paper Mills Recalculate?

On the procurement side, safety stocks, contract tenors, foreign-exchange exposure and ocean-freight risk should be managed separately for NBSK, BHKP, unbleached pulp and other fibres. On the technical side, mills should quantify how changes in the softwood-pulp share affect strength, drainage, refining energy, dry-strength and wet-strength additives, retention aids and machine speed. On the commercial side, they should assess pulp prices, paper prices, operating rates, inventories and cash conversion together.

For papermaking-chemical suppliers, equipment manufacturers and packaging converters, the opportunity is not simply to help customers “use one tonne less softwood pulp”. A substitution strategy must demonstrate its true operating limits for a specific paper grade through sheet strength, formation, machine stability, lightweighting, converting yield and total cost per tonne.

CONCLUSION / PAPER INDUSTRY ANALYSIS, GROUNDED IN DATA

Domtar’s 380,000 tonnes per year of NBSK capacity is being idled indefinitely rather than permanently closed. Yet when viewed alongside the planned permanent closure at Skutskär, market-driven downtime at Joutseno, and temporary adjustments at Kaukas and Pietarsaari, it forms part of a broader set of supply-side contraction signals.

What these developments demonstrate is that higher-cost softwood pulp capacity has begun to contract proactively. What they do not yet demonstrate is that global market pulp prices have completed a reversal.

Pulp prices have not yet turned, but higher-cost capacity has already begun to contract.