✦ Centinela and Two Hundred Thousand TonnesNarrow moat

Marubeni (8002) — the future bets

Centinela's expansion would give Marubeni about a quarter more copper, on a schedule its partner controls.

Marubeni's copper equity production capacity was about 150,000 tonnes a year at the end of 2023, about 160,000 after it added to its Los Pelambres interest, and would reach about 200,000 after the Centinela expansion, scheduled for completion in 20271. The company describes the expansion as doubling processing capacity2.

Equity copper production capacity (thousand tonnes)about 150End 2023about 160After Los Pelambresabout 200After CentinelaScheduled for completion in 2027; Marubeni presentation materials, June 2026
A quarter more copper if the expansion arrives on time.

Copper is Marubeni's most profitable resource: the Chilean copper holding earned ¥57.8 billion in the year to March 20263. At the company's own sensitivity of about ¥1.3 billion per $100 a tonne4, the business is already heavily exposed to price. The expansion adds volume, which is the part Marubeni can control.

Antofagasta operates the expansion, so the schedule and the budget are its to keep.

The capacity increase would come mostly from Centinela, where Marubeni's share is 30%5. The company's presentation gives its share of capacity by mine after the expansion as about 40 thousand tonnes from Los Pelambres, about 90 thousand from Centinela and about 20 thousand from Antucoya6.

The measure is equity sales volume after 2027. If it does not rise meaningfully above the 132 thousand tonnes sold in the year to March 20267, the capacity has not reached the market.

Moat trajectory: Widening

Capacity has risen from about 150,000 to about 160,000 tonnes and the expansion toward 200,000 is scheduled for 2027.

The number that tests this moat
Reported
Equity copper production capacity
about 160,000 tonnes a year, heading to about 200,000

The expansion is the volume growth in the copper business; delivery in 2027 is the test.

Source: Marubeni presentation materials, June 2026 ↗
References
  1. ReportedMarubeni's copper equity production capacity was about 150,000 tonnes a year at the end of 2023, about 160,000 after it added to its Los Pelambres interest, and would reach about 200,000 after the Centinela expansion, scheduled for completion in 2027.
    Marubeni Corporation, Presentation Materials, June 2026 - company overview, copper equity production capacity by mine, GC2027 targets and capital allocation, and the growth record since the year to March 2021. — June 2026 · publ. June 2026 · source ↗
  2. ReportedThe company describes the expansion as doubling processing capacity.
    Marubeni Integrated Report 2026, Section 5 Business Portfolio - the businesses inside each segment, recent acquisitions and disposals, and the issues each segment names for itself. — 2026 · publ. 2026 · source ↗
  3. ReportedCopper is Marubeni's most profitable resource: the Chilean copper holding earned ¥57.8 billion in the year to March 2026.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - net profit of major group companies by segment, with ownership and business descriptions. — FY to March 2026 · publ. 1 May 2026 · source ↗
  4. ReportedAt the company's own sensitivity of about ¥1.3 billion per $100 a tonne, the business is already heavily exposed to price.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
  5. ReportedThe capacity increase would come mostly from Centinela, where Marubeni's share is 30%.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
  6. ReportedThe company's presentation gives its share of capacity by mine after the expansion as about 40 thousand tonnes from Los Pelambres, about 90 thousand from Centinela and about 20 thousand from Antucoya.
    Marubeni Corporation, Presentation Materials, June 2026 - company overview, copper equity production capacity by mine, GC2027 targets and capital allocation, and the growth record since the year to March 2021. — June 2026 · publ. June 2026 · source ↗
  7. ReportedIf it does not rise meaningfully above the 132 thousand tonnes sold in the year to March 2026, the capacity has not reached the market.
    Marubeni Corporation, full-year IR presentation for the fiscal year ended March 31, 2026 - resource asset table (stakes, capacities, partners and exposures), equity volumes, sensitivities to commodity prices and currencies, and the Middle East risk scenarios and risk-management framework. — FY to March 2026 · publ. 1 May 2026 · source ↗
Sources
Generated September 24, 2026