The Argentine Congress finalized the approval of a legislative reform on April 10, 2026, that significantly eases environmental restrictions established by the 2010 Glacier Protection Law. The measure, which passed the Senate with a 37-33 vote following earlier approval in the Chamber of Deputies, represents a pivotal shift in the nation’s environmental and industrial policy under the administration of President Javier Milei. The executive branch has confirmed that President Milei will sign the legislation into law within the coming days, marking a fulfillment of a key campaign promise to deregulate the extractive industries.
The primary modification involves the redefinition of protected periglacial environments. Under the original Law 26.639, all glacial and periglacial areas were strictly off-limits to industrial activity to protect the country's primary freshwater reserves. The 2026 amendment narrows these protections to apply only to glaciers that are currently active, perennial, and of a specific size as documented in the National Glacier Inventory. By excluding certain inactive periglacial zones and landforms that do not directly contribute to downstream water flow, the law effectively opens vast high-altitude territories in the Andes Mountains to exploration and exploitation.
Government officials, including the Secretary of Mining, stated that the previous legal framework was overly broad and had stalled approximately $30 billion in potential mining investments. The administration argues that the reform provides the legal certainty required for long-term projects, particularly in the Lithium Triangle provinces of Salta, Jujuy, and Catamarca, as well as copper-rich San Juan. This legislative change is closely linked to the Incentive Regime for Large Investments (RIGI), which provides 30-year tax and customs benefits to projects exceeding $200 million.
Geopolitically, the move positions Argentina to more aggressively compete with neighboring Chile, the world’s largest copper producer. As global demand for transition minerals like copper and lithium intensifies, the Argentine government has prioritized the development of the Taca Taca, El Pachon, and Josemaria projects, all of which were previously complicated by their proximity to periglacial zones. The decision aligns Argentina with a broader regional trend of prioritizing mineral extraction to address fiscal deficits and bolster foreign exchange reserves.
The reform has faced intense opposition from environmental organizations and scientific bodies. Representatives from Greenpeace Argentina and the Environment and Natural Resources Foundation (FARN) issued statements warning that the law compromises the long-term water security of the Cuyo and Northwest regions, which are already experiencing prolonged droughts. Legal experts anticipate that the law will face immediate challenges in the Argentine Supreme Court on the grounds of non-regression in environmental protection standards. Despite these protests, the Milei administration maintains that the reform is essential for national economic recovery.