Gasoducto General San Martín
In operation since the late 60s
- Route
- San Sebastián (Tierra del Fuego) → Río Gallegos → Comodoro Rivadavia → Bahía Blanca → Greater Buenos Aires
- Operated by
- TGS (Transportadora de Gas del Sur)
- Length
- about 3,750 km · 30 inches
The southern gas pipeline: it brings gas from the Austral Basin (Tierra del Fuego and Santa Cruz) and the Golfo San Jorge Basin to Bahía Blanca and Greater Buenos Aires, with a long chain of compressor plants along the Patagonian coast. It includes the subsea crossing of the Strait of Magellan.
Neuba I and Neuba II
In operation
- Route
- Neuquén Basin (Sierra Barrosa · Loma La Lata) → Bahía Blanca (General Cerri) → Greater Buenos Aires
- Operated by
- TGS
- Length
- Neuba I: 1.267 km (1970) · Neuba II: 1,958 km (1988, expanded to 2000)
The two gas pipelines TGS uses to take Neuquén gas to Bahía Blanca and Greater Buenos Aires. Neuba I leaves Sierra Barrosa and passes through Chelforó, Bahía Blanca, Indio Rico and Olavarría. Neuba II leaves Loma La Lata, crosses Río Negro and La Pampa to Bahía Blanca and heads up to Buenos Aires through western Buenos Aires Province (Saturno and Ordoqui plants); at Salliqueló it receives gas from the Gasoducto Perito Moreno. At the General Cerri complex in Bahía Blanca, TGS separates the liquids from the gas (ethane, propane, butane and gasoline).
Gasoducto Perito Moreno (formerly GPNK)
In operation since 2023; expansion under construction to April 2027
- Route
- Tratayén (Neuquén) → Salliqueló (Buenos Aires)
- Operated by
- Enarsa (operated by TGS)
- Length
- 573 km · 36 inches
- Capacity
- 21 million m³/day; 35 million with the expansion
- Investment
- expansion: about US$ 800 million (US$ 560 million in compressor plants + works on the TGS system), under RIGI
The gas pipeline inaugurated in July 2023 to take more gas out of Vaca Muerta and replace imports. The expansion is being done by TGS (sole bidder in the tender): three new compressor plants in La Pampa, about 150 km apart, to add 14 million m³/day (12 toward the Mercedes area and 2 for Bahía Blanca). The goal is to have it ready for the 2027 winter and save up to US$ 700 million per year in LNG and imported fuels.
Gasoducto Centro Oeste
In operation
- Route
- Loma La Lata (Neuquén) → San Luis → southern Córdoba → San Jerónimo (Santa Fe)
- Operated by
- TGN (Transportadora de Gas del Norte)
It carries Neuquén gas to the center of the country and the Litoral, where it joins the Gasoducto Norte. It is TGN's main route for Neuquén Basin gas and, from La Carlota, feeds the reversal of the Gasoducto Norte.
Gasoducto Norte
In operation (partially reversed)
- Route
- Campo Durán (Salta) → Tucumán → Santiago del Estero → Córdoba → San Jerónimo → Buenos Aires
- Operated by
- TGN
Historically it carried Northwest Basin gas and gas imported from Bolivia south to the center. With the fall of that production and the end of purchases from Bolivia in 2024, it is being "turned around" so that Vaca Muerta gas flows north.
Gasoducto Norte reversal
Pipelines commissioned in 2024–2025; compressor plants halted
- Route
- La Carlota → Tío Pujio (Córdoba), Tío Pujio → Ferreyra loop and reversal of 4 compressor plants
- Operated by
- Enarsa · TGN
- Length
- new 36-inch section + 62 km loop of 30-inch pipe
- Capacity
- today about 15 million m³/day to the north; 19-20 million with the plants completed
It connects the gas arriving via the Centro Oeste with the Gasoducto Norte to supply Córdoba and the NOA without Bolivian gas. The Lavalle, Lumbreras, Deán Funes and Ferreyra plants remain (progress between 27% and 75% in August 2026), held up by a dispute between Enarsa and the contractor; the Government wants TGN to finish them before the 2027 winter.
Gasoducto Manuel Belgrano
Project: construction from April 2027, operation in April 2029
- Route
- Tratayén (Neuquén) → La Carlota (Córdoba), via Río Negro, La Pampa and San Luis
- Operated by
- TGN
- Length
- 753 km (278 km of 36" + 475 km of 30")
- Capacity
- about 13-14 million m³/day
- Investment
- US$ 1,500 million for the pipeline; US$ 2,200 million with complementary works (will apply for RIGI)
The next major trunk gas pipeline: it would carry Vaca Muerta gas directly to the center and, through the reversal, to the north of the country, with the possibility of exporting to neighboring countries. TGN launched the capacity open season in late September 2026; the award is expected by the end of November.
Export gas pipelines
In operation
- Route
- To Chile: GasAndes (Mendoza → Santiago), Gas Pacífico (Neuquén → Concepción), Norandino and Gasoducto Atacama (Salta → northern Chile). To Uruguay and Brazil: through the Litoral.
- Operated by
- Several
Built in the 90s to export gas, they were left almost unused when Argentina became an importer. With Vaca Muerta they are moving gas to Chile again and, in winter, the flow is adjusted according to local demand.