Antofagasta is a London-listed copper mining company operating four mines in northern Chile's Atacama Desert region.
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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. Fees pay for the review, never the result. Last verified October 2026.
That places Antofagasta joint 614th of 847 companies scored, and 2nd of 14 in Mining & Extraction.
Where Antofagasta sits among mining & extraction peers.
Among the 14 major mining & extraction brands we've scored, Antofagasta sits 2nd of 14.
Its three lowest-scoring questions, and what the evidence didn't show.
Scope 1 rose 3.41% from 2023 to 2024 and 16.45% since 2020, driven by production growth.
Chile's SMA filed December 2022 charges against Centinela for 'very serious' failure to mitigate impacts on critically endangered Loa frog (Telmatobius dankoi, endemic to this region only).
SMA fined Los Pelambres US$196K (Feb 2023, tailings leak) and Centinela US$775K (Jan 2026, monitoring non-compliance).
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Energy Source and Carbon Footprint — Operations (8/10, 7/10). Weakest on Emissions Trajectory and Nature & Biodiversity Impact (2/10, 3/10).
The one company in the sector scoring above Antofagasta.
See the full Mining & Extraction table →Antofagasta's score has moved from 28 to 30 across 2 recorded reviews, up 2 points.
Aggregator-citation sweep: broker citations replaced with the primary disclosures they mirror, re-scored through the guarded pipeline under pinned code 9196601.
Initial public score 28 (publish-draft)
The formula and all 12 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale12 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
“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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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. 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.
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