From $496 Million to $17.9 Billion: How Milei’s RIGI Rewrote Vaca Muerta’s Investment Map

The Vaca Muerta RIGI pipeline has gone from a trickle to a flood. What began as targeted infrastructure filings in 2024 has become the largest coordinated investment wave in Argentine energy history, driven by a single regulatory change and triple-digit oil prices.

When The Rio Times reported on Phoenix Global Resources’ $6 billion RIGI filing in late March, it was one company making one bet. Three weeks later, the picture has changed fundamentally. Eleven Vaca Muerta RIGI projects totaling $17.9 billion have now been approved, more than ten additional submissions are in evaluation, and the regime itself has been extended through July 2027. The catalyst was Decree 105/2026, signed in February, which expanded RIGI eligibility to upstream oil and gas exploration and production — activities that were excluded when the regime launched in 2024 under the Ley de Bases.

The Pampa Escalation

The clearest illustration of the upstream extension’s impact is Pampa Energía. Marcelo Mindlin’s conglomerate filed its original RIGI request in July 2025 for $496 million in infrastructure at Rincón de Aranda — treatment plants, pipelines, and storage connecting the block to trunk systems like the Vaca Muerta Sur (VMOS) oil pipeline. After Decree 105/2026 opened the door to production itself, Pampa refiled for $4.5 billion — a ninefold increase covering over 100 additional wells, the full upstream development of the block’s northern section, and a target plateau of 45,000 barrels per day by 2027.

Economy Minister Luis Caputo announced the filing personally on X, signaling the political weight the administration attaches to each new commitment. Pampa plans to invest $770 million in Rincón de Aranda in 2026 alone and expects to fund the entire $1.1 billion consolidated exploration and production budget without issuing new international debt — a notable contrast to the funding freeze that followed the September 2025 midterm defeat.

International Majors Join the Queue

The most significant shift from our earlier coverage is the entry of international oil companies that had previously been cautious or absent. At the Vaca Muerta Insights conference in March, Chevron’s Argentina country manager Ana Simonato confirmed the company is evaluating RIGI applications for its existing assets in the basin. TotalEnergies country chair Sergio Mengoni said the French major is working with partners on a new oil project for RIGI submission, expanding beyond its traditional gas focus in Argentina.

Both executives emphasized that RIGI’s 30-year tax stability and free profit repatriation rules were decisive factors — a validation of the framework’s design given that Exxon, TotalEnergies, and Equinor all exited Argentine upstream assets in recent years under previous governments. Vista Energy CEO Miguel Galuccio indicated his company is analyzing RIGI for blocks at Bandurria Norte, Águila Mora, and potentially Bajo del Toro. Tecpetrol, the Techint Group’s energy arm, filed a $2.4 billion submission at CERAWeek in Houston. The pipeline of pending filings now includes projects in oil, gas, lithium (Río Tinto), copper (Glencore’s Pachón and Agua Rica), gold (Abrasilver), and steel (Tenaris).

The Production Numbers

Argentina produced 865,000 barrels per day of crude oil in February 2026, a 15.3% increase over the same month in 2025. Neuquén province — where Vaca Muerta is located — accounted for 603,800 barrels per day, up 30.3% year-on-year. The formation now represents approximately 70% of national output. The industry is targeting the symbolic 1 million barrel-per-day mark by late 2026 or 2027, which would make Argentina a mid-tier global producer on par with Libya or Algeria.

Neuquén Governor Rolando Figueroa used CERAWeek to announce a new round of licitaciones for 15 strategic areas within Vaca Muerta, scheduled for August 19, 2026. The governor also revealed he is negotiating with Economy Minister Federico Sturzenegger to eliminate import duties on capital goods for the energy sector — a measure that would further reduce breakeven costs already estimated at $36–45 per barrel. The $3 billion VMOS pipeline, which will connect Vaca Muerta to Atlantic export terminals with initial capacity of 550,000 barrels per day, remains on track for late 2026 commissioning.

The Hormuz Tailwind — and the Political Test

The investment wave is unfolding against an extraordinary commodity backdrop. Brent crude has surged above $110 as the Strait of Hormuz remains effectively closed, and Trump’s deadline for Iran expires tonight. At $110 Brent and $36–45 breakeven costs, Vaca Muerta operators are generating margins that make even the most capital-intensive RIGI projects economically compelling. YPF CEO Horacio Marín characterized the price environment as transitory but acknowledged that investment decisions being locked in now will produce barrels for decades.

The political test remains unchanged from when we reported on the Phoenix filing: whether Milei can sustain market-based energy pricing through a global oil shock without reverting to the interventionist playbook every previous Argentine government used. As Bloomberg Línea reported, the gasoline price pass-through is already hitting Argentine consumers — precisely the political pressure point that historically triggers export taxes, price caps, or both. The RIGI regime’s 30-year guarantee is designed to insulate investors from this cycle. With $17.9 billion approved and billions more pending, the regime is now too large to unwind without catastrophic credibility damage. That, ultimately, is the bet Milei is making — and the bet the market is pricing.