2025 Sustainability Report shows safety gains and higher renewable energy

Capstone Copper published its 2025 Sustainability Report for the period from January 1 to December 31, 2025.

The Vancouver, British Columbia-based company prepared the report under GRI Standards, Sector Standard GRI 14: Mining Sector 2024, and the SASB Metals & Mining Sustainability Accounting Standard.

Recordable injuries fell by about 22% in 2025. The combined workforce Total Reportable Injury Frequency Rate improved to 0.69 from 0.91 in 2024.

The Lost Time Injury Frequency Rate improved to 0.23 per 200,000 hours in 2025, down from 0.48 in 2024.

Cashel Meagher, Capstone’s president and chief executive, said 2025 was “a year of meaningful progress”.

He said the company kept building “a culture grounded in safety, accountability and disciplined execution” while growing production to meet rising copper demand.

Pinto Valley wins The Copper Mark

Pinto Valley received The Copper Mark award in 2025. Mantos Blancos and Mantoverde received the award in 2023.

Meanwhile, Mantos Blancos and Mantoverde started the second assurance cycle in 2025. Cozamin also began the assurance process in 2025.

All sites now take part in The Copper Mark assurance process, extending the company’s responsible copper production programme across its operations.

Total energy use rose 14% from 2024. Renewable energy increased to 24% of total energy, up from 21%.

The higher energy use reflected a larger share of copper concentrate production than copper cathode production.

Renewable energy rose because Mantoverde and Mantos Blancos bought all electricity from I-REC certified renewable sources in 2025.

The company also reported a 7% cut in market-based greenhouse gas emissions from fuel and power against its recalculated 2021 baseline.

As a result, Capstone stayed on track for its 2030 target to cut those emissions by 30%. Market-based emissions intensity fell 13% year on year per tonne of copper produced.

Across water management, low-quality water withdrawals rose 6% to 87% from an 81% baseline in 2021.

Freshwater use intensity per tonne of ore processed increased 30% against the same 2021 baseline.

The company advanced water stewardship through a Water Management Standard covering freshwater use, recycled water and governance.

Company-wide conformance with the Global Industry Standard for Tailings Management reached 80% in 2025, up from 48% in 2024.

In 2025, Capstone launched company-wide Biodiversity and Social Performance Standards. All sites completed self-assessments and began action plans.

Those steps achieved two Sustainable Development Strategy targets across biodiversity and social performance in 2025.

The combined workforce increased 20% to 8,152 in 2025 from 6,806 in 2024.

That increase mainly reflected growth in Chile, including the start of first-stage project work at Santo Domingo.

The share of women employees rose to 12% from 10%. Global employee turnover fell to 12% from 15%.

The company’s 2025 work centred on five priority areas: climate, water, tailings, biodiversity and communities.

Meagher said sustainability remains tied to Capstone’s business strategy as it aims to create lasting value for shareholders, employees, the environment and operating communities.