Antofagasta sustainability score: 30/100
Antofagasta is a London-listed copper mining company operating four mines in northern Chile's Atacama Desert region. Founded in 1888, it produces copper, molybdenum, and gold.
More about Antofagasta
The company ranks among the world's largest copper producers by resource and competes directly with Rio Tinto, BHP, and Glencore in bulk commodity extraction.
Head office United KingdomStaff ~5,637 (2016)Revenue ~$6.6B (2024)Website ↗
Antofagasta has achieved 100% renewable electricity and set a 50% Scope 1+2 reduction target by 2035, but Scope 1 emissions are rising with production growth. A documented pattern of water compliance failures across multiple mines — including regulatory fines and confirmed harm to a critically endangered species — undermines operational credibility despite infrastructure investment.
Antofagasta scores 30/100 (Significant gaps) on SINK's independent climate assessment, scored from public data only. Scores are free. Companies can never pay for anything about their own score. Last verified October 2026.
That places Antofagasta joint 687th of 934 companies scored, and 2nd of 13 in Mining & Extraction.
What is Antofagasta doing well, and where does it fall short?
Strongest on Energy Source and Carbon Footprint: Operations (8/10, 7/10). Weakest on Emissions Trajectory and Nature & Biodiversity Impact (2/10, 3/10).
Where Antofagasta lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
- Emissions from its own operations7/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain4/10Most of its supply-chain (Scope 3) emissions aren't measured.
- Whether its emissions are falling2/10No evidence its emissions are falling, not even from energy bills or mileage.
- How clean its energy is8/10Its own operations aren't shown to run on 100% renewable energy.
- Its effect on nature3/10No assessment of its effect on nature, and no basic environmental policy.
- How it uses materials and handles waste4/10No measurable waste or recycling targets reported publicly.
- Its effect on water3/10No monitoring of water use, or no measures to reduce it.
- Its climate targets4/10Its targets aren't science-based or committed to the Science Based Targets initiative.
- How openly it reports6/10No annual impact report, or no pay linked to climate targets.
- Its record on controversies5/10Points deducted for controversies or its business model. The finding is under question 10.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is Antofagasta's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleHas Antofagasta's score changed?
Antofagasta's score has moved from 28 to 30 across 2 recorded reviews, up 2 points.
- 28 → 30+23 October 2026
Aggregator-citation sweep: broker citations replaced with the primary disclosures they mirror, re-scored through the guarded pipeline under pinned code 9196601.
- Scored 282 August 2026
Initial public score 28 (publish-draft)
What evidence is Antofagasta's score based on?
12 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
58% of them were published by Antofagasta itself; the rest come from independent sources.
“In 2024, the Company announced its updated emission targets for Scope 1 and 2, a new Scope 3 emissions target and Climate Action Plan.”
“Following the move to contract renewable power supply in 2022, which materially reduced our Scope 2 emissions.”
“In 2022, the company reported 1,113,581 tCO2e for Scope 1 emissions, while Scope 2 emissions totaled 960,650 tCO2e (location-based) and 95,236 tCO2e (market-based).”
“In August 2023, Antofagasta Minerals, together with other major mining companies operating in Chile, formed the first Scope 3 Emissions Traceability Roundtable.”
“The Mining Division's CO2e emissions intensity increased by 9% in 2025 (includes contractor emissions).”
“100% of the power supplied to the Centinela copper mine in the Antofagasta region will be from renewable sources.”
“Centinela mining unit has signed a power purchase agreement (PPA) with Engie Energia Chile SA to procure 100% renewable energy.”
“one charge, described as 'very serious,' was for not reporting or taking necessary actions to control and mitigate impacts on Loa frogs.”
“ICMM is Taskforce on Nature-related Financial Disclosures (TNFD)'s official piloting partner for the mining and metals sector.”
“On 17 February 2023, the SMA issued a fine of UTA 211.9 (US$ 196,202) having established that two of the three infractions identified were associated with the water leak.”
“Chile's environmental regulator (SMA) has fined Antofagasta Minerals about $775,000 for failing to comply with water management regulations at its Centinela copper mine.”
“In 2024, 141 suppliers were assessed through desk-based evaluations, exceeding the annual target of 132.”
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How does Antofagasta compare with other mining & extraction companies?
Where Antofagasta sits among mining & extraction peers.
Among the 13 major mining & extraction brands we've scored, Antofagasta sits 2nd of 13.
Who scores higher in Mining & Extraction?
The one company in the sector scoring above Antofagasta.
See the full Mining & Extraction table →Which companies moved this week, and why.
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