By Charles Pitts
BUENOS AIRES : The Argentine government has formally greenlit the country’s largest copper development under its flagship economic incentive framework. Through Resolution 1154/2026, published in the Official Gazette, the Ministry of Economy approved the accession of Vicuña Argentina S.A.: a joint venture between global mining majors BHP and Lundin Mining: to the Large Investment Incentive Regime (RIGI).
The decree classifies the binational Vicuña project as a Long-Term Strategic Export Project (PEELP), unlocking a comprehensive package of tax, customs, and foreign-exchange stability designed to fast-track multi-billion-dollar resource extraction in the high Andes. The milestone represents a decisive step forward for Argentina’s emerging copper sector, providing long-term predictability for one of the most significant mineral districts in South America.
For a broader perspective on how major capital projects are reshaping resource financing, see Skillings Mining Intelligence.
Integrating Josemaría and Filo del Sol
The approved RIGI application covers the integrated development of two world-class deposits: Josemaría and Filo del Sol. Straddling the border between Argentina’s San Juan Province and Chile’s Atacama Region, the Vicuña district represents a massive geological endowment of copper, gold, and silver.
Under the operational blueprint submitted by Vicuña Argentina S.A., the project encompasses not only the primary extraction pits but also extensive industrial infrastructure. The approved works include a centralized concentrator plant, advanced leaching facilities, high-capacity water supply systems, high-voltage electrical transmission lines, access roads, logistics camps, and auxiliary processing facilities.
By fusing Josemaría and Filo del Sol into a single operational framework, the joint venture aims to optimize capital allocation, streamline supply chains, and maximize metallurgical recovery across the district. Industry analysts note that integrated binational management is essential for operating efficiently in remote, high-altitude alpine environments where logistics and power availability dictate project viability.
Investment Phasing and Financial Commitments
Resolution 1154/2026 details a total investment plan of US$9.737 billion, of which US$9.024 billion officially qualifies as eligible assets (activos computables) under the RIGI framework.
To ensure rapid capital deployment, the investment schedule is structured into two distinct execution phases:
- Phase 1: Spanning from July 8, 2024 (the enactment date of Law 27.742) through December 31, 2026, encompassing US$1.128.882.650 in qualifying assets.
- Phase 2: Running from January 1, 2027, through December 31, 2031, accounting for US$7.895.849.631 in eligible assets.
Furthermore, Article 4 of the resolution establishes December 31, 2028, as the strict deadline for the project sponsors to fulfill their mandatory minimum investment commitments in computable assets. This timeline aligns with RIGI’s statutory requirement that large-scale ventures mobilize substantial capital within their initial years of approval.
District Scale and Long-Term Production Potential
The economic scale of the Vicuña district places it among the most consequential greenfield copper and precious metals developments globally. According to technical disclosures filed by the joint venture partners, the integrated district boasts a projected operational life exceeding 70 years.
During its initial 25 years of full-scale production, the project is expected to deliver impressive annual averages:
- Copper: Approximately 395,000 tonnes per year.
- Gold: Approximately 711,000 ounces per year.
- Silver: Approximately 22.2 million ounces per year.
This output profile positions Vicuña as a cornerstone supplier of critical energy transition metals. With global demand for refined copper projected to outpace primary mine supply over the coming decade, large-scale district developments are attracting intense focus from institutional investors and industrial consumers alike.
Workforce and Regional Economic Impact
Beyond its output metrics, the project serves as a major engine for regional employment and industrial development in western Argentina. The official resolution notes that Vicuña currently supports a direct workforce of 2,743 personnel, spanning technical engineering, geological exploration, environmental monitoring, and site construction.
San Juan provincial authorities have consistently emphasized the multiplier effect of such investments on local supply chains. Engineering firms, logistics providers, and equipment maintenance contractors across Cuyo and surrounding provinces are scaling up operations to service the influx of industrial activity.
For further analysis on critical mineral market dynamics and capital allocation trends, explore our coverage on Skillings Mining Intelligence.
RIGI Framework and Strategic Stability
Accession to the Large Investment Incentive Regime grants Vicuña Argentina S.A. a 30-year guarantee of legal, fiscal, and foreign-exchange stability. Key benefits under the PEELP category include:
- Tax Predictability: A fixed corporate income tax rate of 25% for the duration of the stability period, insulating the project from legislative volatility.
- Customs Exemptions: Zero import tariffs on capital machinery, heavy equipment, and critical industrial supplies required for construction and operation.
- Export Incentives: Elimination of export duties (retenciones) on production originating from the project after its third year of commercial operation.
- Foreign-Exchange Freedom: The right to retain export proceeds abroad and exemption from mandatory currency conversion at official exchange rates, facilitating debt servicing and international capital returns.
Government officials maintain that these structural guarantees are necessary to unlock multi-decade capital commitments in capital-intensive sectors like mining. By establishing a predictable fiscal island, Argentina aims to capture a larger share of global foreign direct investment in critical minerals.
Outlook for Bipartite Mining Development
As Vicuña Argentina S.A. advances engineering and procurement under RIGI oversight, attention turns toward the practical execution of Phase 1 milestones ahead of the 2028 minimum investment deadline. The Secretariat of Mining has been designated as the primary oversight body responsible for monitoring compliance with environmental, operational, and financial benchmarks.
The successful progression of Vicuña serves as a bellwether for Argentina’s broader mining strategy. By demonstrating that mega-scale, binational copper projects can secure long-term regulatory backing, Buenos Aires hopes to catalyze subsequent investment waves across San Juan, Catamarca, and Salta, cementing the nation’s status as a premier jurisdiction for global resource capital.
