Southern Energy - floating LNG (Argentina LNG, Hilli phase)
Floating LNG project to export Vaca Muerta gas. Although the plant is in Río Negro, it monetizes Neuquén gas: it is key to the evacuation/monetization thesis for associated gas. ~6 MTPA with 2 vessels; first exports around end of 2027. The supply bottleneck was cleared: the San Matías pipeline (approved under RIGI, FID done) connects Tratayén with San Antonio Oeste to feed the plant.
The projectwhat it is, the route, the owners, the works and the contractors
What it is and why it exists
Two vessels moored in the San Matías Gulf, off the Río Negro coast, that receive gas through a subsea pipeline, chill it until it turns liquid and load it onto carriers bound for Europe and Asia. There is no onshore plant: the factory is the ship. They are operated by Southern Energy, a company owned by Pan American Energy, YPF, Pampa, Harbour Energy and Golar, the shipping company providing the two floating units.
Vaca Muerta produces more gas than Argentina consumes, and there is no one to sell the surplus to: gas only travels far if it is liquefied. Liquefying on an already-built vessel instead of erecting an onshore plant saves years and billions, which is why the project starts with the Hilli Episeyo, already operating in Cameroon. What made it financeable was the package: the RIGI approval in 2025, two twenty-year export authorisations and an agreement with Río Negro freezing the tax regime for thirty. On that basis the vessel charter contracts were signed — twenty years, payable whether the ships operate or not.
Where it runs and how much it can move
Length 392.4 m, beam 61 m, draft 27 m. Two PRICO trains with two turbo-compressors per train. Storage of 147,000 m³ in 4 Moss-type spherical tanks. Inlet pressure of 50 to 70 barg. Dry-dock conversion of an LNG carrier launched in 2004, inserting a new hull section amidships. It is the Golar FLNG Mark II concept, an evolution of the Mark I developed for the Hilli and the Gimi verif · May 4, 2026 ↗
Installed capacity of 52,500 kW. It compresses the gas arriving from the General San Martín pipeline, taken at the outlet of Transportadora de Gas del Sur S.A.'s San Antonio Oeste compressor plant at a guaranteed pressure of 40 kg/cm²g verif · May 4, 2026 ↗
A 30-inch pipeline, design pressure of 80 kg/cm²g and roughly 14 to 15 km long, buried, carbon steel, with three-layer coating and cathodic protection. It carries the gas from the head facility to a point on the coast (tie-in), with an anchor block, an insulating joint and a sectioning valve verif · May 4, 2026 ↗
Two pipelines roughly 5.5 km long and 20 and 24 inches in diameter, carrying the gas from the coast to the mooring and supply device for the FLNG units, installed on the seabed at a depth of 35 metres verif · May 4, 2026 ↗
At Puerto San Antonio Este, to support the FLNG units and the LNG carriers verif · May 4, 2026 ↗
A Single Point Mooring (SPM) device of the SSY type (Submerged Swivel and Yoke): a piled mooring base with a rotating turret and a yoke arm connected at two points to the bow of the FLNG by twin chains, allowing the vessel to rotate 360° around the base. The FLNG units stay moored 4.5-7 km offshore throughout the project's operating life verif · May 4, 2026 ↗
Who owns it
Southern Energy S.A. (SESA): Pan American Energy, YPF, Pampa Energía, Harbour Energy and Golar LNG prob · Apr 14, 2026 ↗
What other projects it links to
What this project enables or needs outside the province, and through what mechanism.
Río NegroThe Dedicated Pipeline of San Matías Pipeline S.A verif · May 4, 2026 ↗+
is this project's continuous supply infrastructure
The works, milestone by milestone
Río Negro's Boletín Oficial publishes Decreto 618/26, which regulates the Río Negro supplier regime and creates an exception route for newly established companies through a Relocation Plan with milestones at 24 months.
The Ministerio de Economía approves the RIGI accession of San Matías Pipeline S.A., owner of the dedicated pipeline that supplies this project, through Resolución 873/2026: USD 1,300 million of investment and an accession date of 1 Jun 2026.
The award of the terminal's marine services for 10 years to the consortium of Meridian Transportes Marítimos and Adani Harbour International FZCO is published: USD 70 million, 4 high-specification tugs, 1 AHTS and 1 crew transfer vessel, starting in 2027.
Río Negro's Boletín Oficial publishes Ley 5849, which ratifies the Acta Acuerdo with Southern Energy and San Matías Pipeline, with the full Acta as an annex.
Río Negro and Southern Energy sign the export agreement: an Acta Acuerdo on tax regime and regulatory stability with Southern Energy S.A. and San Matías Pipeline S.A., enacted through provincial Decreto 439/2026.
Golar LNG takes the final investment decision on the MK II on 6 Aug 2025 and on 23 Oct 2025 announces the conditions precedent of the 20-year charter as satisfied: 3.5 million tonnes a year, USD 400 million of annual hire and USD 8,000 million of EBITDA backlog across the two units.
Río Negro's Boletín Oficial publishes together Ley 5804 on local labour, the 80/20 rule, and Ley 5805 on Río Negro local content, which requires 60% of contracts: the corridor's local-capture package came out in the same issue.
Resolución 353/2025 of the Secretaría de Energía: second Free Export Authorisation, for the MK II, valid from 1 Sep 2028 to 31 Aug 2058. The stability guarantee is made conditional on completion of the dedicated pipeline, whose commercial operation is estimated for May 2028.
The Ministerio de Economía approves the accession of Southern Energy S.A. (CUIT 30-71858062-1) to the RIGI through Resolución 559/2025, with approved output of 1.5 to 2.2 million tonnes of LNG a year depending on gas supply availability.
Golar LNG takes the final investment decision on the 20-year charter of the Hilli Episeyo and signs the definitive agreements for the MK II. The ownership split it declares is Pan American Energy 30%, YPF 25%, Pampa Energía 20%, Harbour Energy 15% and Golar LNG 10%.
The Secretaría de Energía grants Southern Energy the first Free LNG Export Authorisation through Resolución 165/2025, valid from 1 Jul 2027 to 30 Jun 2057.
Who already has a contract
20-year charter of the Hilli Episeyo (2.45 Mt/yr nameplate) with a final investment decision on May 2, 2025: net hire of USD 285 million per year plus 25% of the FOB price above USD 8/MMBtu, with start-up expected in 2027.
20-year charter of the MK II (3.5 Mt/yr), with a final investment decision on Aug 6, 2025 and conditions precedent satisfied on Oct 23, 2025: net hire of USD 400 million per year with the same price-linked component. Golar declares USD 8,000 million of 20-year EBITDA backlog for the two units.
Conversion of the MK II at the Yantai shipyard, with USD 1,000 million already spent as of Oct 23, 2025, delivery expected in late 2027 and operation from 2028.
A 10-year contract starting in 2027, with USD 70 million of investment in marine infrastructure: 4 high-specification tugs, 1 AHTS and 1 crew transfer vessel. Adani Harbour International FZCO, a subsidiary of Adani Ports (APSEZ), acquired 51% of Meridian Transportes Marítimos S.A. on May 15, 2026.
Contract awarded by Southern Energy S.A. to transport and install the soft yoke (SSY) mooring systems and to hook up the Hilli Episeyo and the MK II. CoreMarine performs diving and construction work —spool installation, ballasting, riser tie-in, pre-commissioning and positioning—; the offshore campaign includes saturation diving and simultaneous multi-vessel operations, and requires chartering diving support vessels (DSV), support vessels and positioning tugs. Engineering and project management started in January 2026; the Hilli is installed in 2027 and the MK II in 2028.
Subcontracted by CoreMarine to transport and install the soft yoke mooring system, with heavy lift and piling activities. The source presents it as a global reference in soft yoke installations, with previous experience in Brazil and Cameroon. It began project management and engineering in January 2026 alongside CoreMarine.
Supplies the SSY systems that let the two units weathervane around a single mooring point, aligning with the environmental forces. The lead contractor’s own release states that the design removes the need for fixed infrastructure such as jetties, and that this is the first application of soft yoke technology in Argentine waters.
How to supply itwhere to register, what they ask for and what they will buy
How to become a supplier
Southern Energy S.A. (SESA), CUIT 30-71858062-1, with offices at Av. Leandro N. Alem 1180, floor 9, CABA. ⚠️ In practice the small supplier does not invoice SESA: it invoices the contractor. The effective buyers identified are BUZCA S.A. (transport, accommodation, machinery, catering, technical testing and environmental services), OPS - Oilfield Production Services (trucks, trailers, crane, water trucks, meals and accommodation in the initial phase; welders and mechanical assembly afterwards), CoreMarine together with Jumbo Offshore (offshore engineering, diving and heavy lift), Meridian with Adani (marine services, towage and personnel transfer) and Bahía Grande (AHTS vessel support for the subsea laying).
Registration is decided by Río Negro's Secretaría de Estado de Energía y Ambiente, which runs the Suppliers Register under art. 14 of Ley 5805. The purchasing decision, by contrast, is spread across the contractors: art. 2.1 of Ley 5805 makes not only the project owner an Obligated Party but also its contractors and subcontractors, so the duty to invite a Río Negro supplier cascades down to whoever actually buys.
The registration routes that exist today, with their status. The one that is up and running is not always the official one.
Río Negro Register of Suppliers of Goods, Services and Works (Ley 5805)
up and running todayCreated by art. 14 of Ley 5805 under the Secretaría de Estado de Energía y Ambiente. Registration is free and valid for twelve months, renewable automatically after verification that the requirements are met (art. 16)
Go to the single windowabrirMódulo Compre RN — Purchasing and Contracting Register
up and running todayArt. 6.b of Annex I of Decreto 618/26 approves and implements the Purchasing and Contracting Register within the Módulo Compre RN of the provincial digital system, and establishes that «el uso de esta plataforma es el medio obligatorio y fehaciente para acreditar el cumplimiento del deber de invitación a proveedores locales»
Go to the single windowabrirWhat they ask you for
Registering in the Río Negro Suppliers Register: that is what activates the right to match the best bid with up to an 8% price premium verif · Sep 1, 2025 ↗Art. 7 of Ley 5805 requires the Obligated Party to grant the Río Negro Supplier «el derecho de igualar la mejor oferta y obtener la adjudicación», on two conditions: that its bid meets the essential quality, safety and operability requirements of the tender documents, and that its price «no supere la mejor oferta en más de ocho por ciento (8%)»
Being a DIRECT supplier of infrastructure works for start-up: that is what activates the turnover tax exemption and the 30-year tax stability verif · May 4, 2026 ↗Art. 4.6 of the Acta Acuerdo extends the turnover tax exemption «a los proveedores directos de bienes, obras o servicios de los VPUs — SESA Y SMP —, estos últimos exclusivamente por su participación en la ejecución de las obras de infraestructura necesarias para la puesta en marcha», and article Eleven also extends Tax Stability to them «estrictamente respecto del mismo período y actividades previstas en la mencionada cláusula»
Being established in Río Negro with local added value — and here, unlike Neuquén, being the subsidiary of an outside group does NOT disqualify you verif · Sep 1, 2025 ↗Art. 4.2 of Ley 5805 admits the subsidiary of an outside group if it evidences local establishment and local added value: employment, productive investment or technology transfer
Meeting the local labour regime of Ley 5804: 80% Argentines, 80% with two years of residence in Río Negro and 20% women and gender-diverse people verif · Sep 1, 2025 ↗Art. 5 item c) of Ley 5804 requires that «como mínimo, el veinte por ciento (20%) del personal contratado deberá estar conformado por mujeres y disidencias». Art. 1 expressly covers projects «que se encuadren en el régimen de incentivo de la ley nacional n° 27742», so the RIGI triggers the law on its own
If you have been operating in the province for less than a year, you enter as a CONDITIONAL Río Negro Supplier with a 24-month Relocation Plan verif · Jun 22, 2026 ↗Decreto 618/26 creates the figure of the Conditional Río Negro Supplier for those who cannot yet evidence operating seniority, subject to a Relocation Plan with a 24-month term
In a joint venture, evidencing that at least 51% of the equity or of the decision-making bodies belongs to people domiciled in Río Negro verif · Jun 22, 2026 ↗Decreto 618/26 sets the threshold at 51% of equity or of the decision-making bodies held by people domiciled in Río Negro for a joint venture to qualify as a Río Negro Supplier
Locating the tax base in Río Negro: 100% if you are a local taxpayer, or a unified coefficient of no less than 0.8000 under the Multilateral Agreement verif · Jun 22, 2026 ↗Decreto 618/26 requires locating the tax base in the province, with 100% for the local taxpayer and a unified coefficient of no less than 0.8000 for those taxed under the Multilateral Agreement
Registration paperwork: registration with ARCA and with Río Negro's Agencia de Recaudación Tributaria, a certificate of non-registration in REDAM, criminal record, sector permits, the Ley 3550 sworn statement and tax and Labour Secretariat clearance prob · Sep 1, 2025 ↗Registering with the Register requires proof of registration with ARCA, proof of registration with Río Negro's Agencia de Recaudación Tributaria, a certificate of non-registration in REDAM, provincial or national criminal records, the permits and certifications relevant to the sector, the signed Ley 3550 sworn statement and tax and Labour Secretariat clearance
The order you get in by
Register in the Río Negro Suppliers Register, which is free and lasts 12 renewable months. It is decided by Río Negro's Secretaría de Estado de Energía y Ambiente. Valid for 12 months, renewable automatically after verification
Sign up to Módulo Compre RN, which is where Obligated Parties publish every contracting requirement. The platform is the provincial digital system, at acceso.inprosistema.com.ar. Notices are published at least 5 business days in advance, or 48 running hours in cases of substantiated urgency
Approach the contractor, not Southern Energy: BUZCA, OPS, CoreMarine with Jumbo Offshore, Meridian with Adani or Bahía Grande, depending on the category. They are Obligated Parties through the cascade of art. 2.1 of Ley 5805, just like the owner.
Attend the matchmaking events the Province convenes, which is the channel that actually worked: 200 companies in October 2025, 50 in December 2025 in San Antonio Oeste with OPS and SESA present, and 220 in General Roca. They are convened by the Province together with the contractors.
If you are going to invoice infrastructure works for start-up, check with the Agencia de Recaudación Tributaria that you fall under the extension of art. 4.6, because it is a price component and not a formality. It is verified with Río Negro's Agencia de Recaudación Tributaria.
What it will buy, and when
Each phase buys different things at different times. The links lead to the matching market or trade.
Interconnection to the trunk system and onshore works
en cursoInterconnection to the trunk pipelines, two compressor stations to secure gas pressure at the vessel and an onshore pipeline to the coast. These are the works that allow initial supply using the transport system's existing capacity in the months of lower local demand.
No catalogued supplier yet: assembly and commissioning of gas turbo-compressors
Subsea works and offshore connection
en cursoTwo subsea pipelines connecting the shore with the two floating units, with their anchor blocks, protection mattresses, manifolds and risers.
No catalogued supplier yet: saturation diving · underwater welding · subsea trenching
Installation of the soft yoke mooring systems
en cursoTransport and installation of the two soft yoke mooring systems manufactured by NOV, with heavy lift and piling, and hook-up of the two units: spool installation, ballasting, riser connection, pre-commissioning and positioning. The campaign includes saturation diving and simultaneous multi-vessel operations, and requires chartering diving vessels, support vessels and positioning tugs.
No catalogued supplier yet: saturation diving · positioning tug for simultaneous operations · charter of a diving support vessel (DSV) and a support vessel · offshore heavy lift and mooring piling
They are not buying any of this today. Open the phase to see the detail and arrive qualified the day it goes to tender.
Operation of the first vesselthe consortium states the last four months of 2027; the charter runs 20 yearspendiente10 ítems+
Operation of the first floating unit moored offshore, supplied with the transport system's existing capacity in the months of lower local demand until the dedicated pipeline enters service.
No catalogued supplier yet: crewing of a floating liquefaction unit on 28x28 rotations · supply of crew changes, food and spares to a moored vessel
Year-round operation of both unitsthe second vessel arrives in late 2028; twelve-month operation depends on the dedicated pipelinependiente13 ítems+
With the dedicated pipeline in service, the project expects both floating terminals to operate year-round. This is the phase in which the consortium commits to local suppliers providing 50% of goods and services.
No catalogued supplier yet: crewing of a floating liquefaction unit on 28x28 rotations
What it will need and has no supplier for yet
Marine services: tugs, mooring, cargo inspection, bunkering
mediumAn LNG export hub with vessels in the San Matías Gulf demands new port and marine services.
Get on board the takeoff
This week’s updates: proyectos RIGI, proveedores y datos verificados de Río Negro and new provinces as they launch. Free.
What it leaves in Río Negrojobs, works, taxes, promises and the outlook
How many jobs it creates
1,900 direct and indirect jobs during the construction stage, mainly of local origin prob · Aug 20, 2026 ↗
The works that stay behind
The infrastructure that stays standing once the works end, with its size and its source.
Dedicated pipeline from Tratayén to the Río Negro coast
productivaSan Matías Pipeline S.A., which operates it with its own RIGI accession. It is fixed gas transport infrastructure that outlives the vessels and stays as installed capacity to move gas out of the basin.
Resolución 353/2025 makes the stability guarantee of the second export authorisation conditional on completion of the dedicated pipeline of approximately 470 km and 36 inches, with capacity close to 28 million cubic metres a day and commercial operation estimated for May 2028.
Two compressor stations for gas pressure at the vessel
energiastations
The supply system for the floating units; they are fixed onshore facilities that remain for as long as the terminal operates.
The consortium itself states that the project requires building «dos estaciones compresoras para asegurar una presión óptima de gas en el buque», in addition to the interconnection to the trunk pipelines and the onshore pipeline to the coast.
Onshore pipeline from the trunk interconnection to the coast
productivacomplete onshore pipeline, from the interconnection to the mooring point
The terminal's supply system; it stays on Río Negro soil as transport capacity towards the coast.
Among the works the consortium states are needed are «un gasoducto terrestre hasta la costa» and «dos gasoductos submarinos que se conecten con ambos buques». The list is the issuer's own and carries no dimensions.
Soft yoke mooring systems of the two units
productivasystems anchored to the seabed, with their piles
The mooring point stays in the gulf for as long as the operation lasts. Its flip side is what does NOT stay: the design removes the need for a jetty, so this project leaves behind no berthing infrastructure.
The soft yoke mooring systems supplied by NOV let the two units rotate around a single mooring point, aligning with environmental forces, in a solution that removes the need for fixed infrastructure such as jetties. It is the first application of this technology in Argentine waters.
What it already pays in taxes and royalties
Item by item, with the rule that sets it. A rate is not the same as what is collected, nor what is received the same as what is projected.
5%Community Contribution (one-off) — the part payable by Southern Energy S.A. verif · May 4, 2026 ↗+
Variable Community Contribution (annual) — payable by Southern Energy S.A. only verif · May 4, 2026 ↗+
USD 1,220,000Fee for special use of the coastal public domain, water royalties and fee for use and protection of water bodies verif · May 4, 2026 ↗+
Operational Control and Oversight Fee for Hydrocarbon Transport verif · May 4, 2026 ↗+
Environmental inspection, control and oversight fee verif · May 4, 2026 ↗+
Turnover tax and stamp duty: exempt, and the turnover tax exemption also reaches direct suppliers verif · May 4, 2026 ↗+
Territorial Development Contribution: exempt verif · May 4, 2026 ↗+
Who promised what
Who promised what, with a date and with how to check it. We record them whatever the political colour.
pendienteSouthern Energy S.A. · That local suppliers provide 50% of the goods and services required during the project's operation prob · Aug 20, 2026 ↗+
pendienteSouthern Energy S.A. · Exports of more than USD 20,000 million between 2027 and 2035 prob · Aug 20, 2026 ↗+
pendienteBen Fitzgerald · Leaving local capability installed in the South Atlantic, and not just delivering the two facilities prob · Jan 2026 ↗+
What changes in Río Negro if the project works
The first vessel starts in the last four months of 2027 and the second at the end of 2028. From then on, the San Matías Gulf exports Argentine gas every day for twenty years.
What changes on the Río Negro coast is not who holds the export licence: it is that an industry appears which did not exist there. A vessel moored at a depth of 35 metres is not serviced from an office — it needs tugs, diving, subsea inspection, crew changes every 28 days two and a half hours' sailing from San Antonio Oeste, catering, spare parts and maintenance, and it needs all of that around the clock for the two decades the contract runs. That market has no owner in the province today.
And there is a window before that one. The subsea works and the assembly of the mooring systems demand trades the country barely trains for: saturation diving, underwater welding, subsea trenching, offshore heavy lifting. They are the first to be contracted and the ones with the least local competition.
For a Río Negro SME the way in is written into two laws: Ley 5805 requires 60% of contracting to go to registered Río Negro suppliers, and Ley 5804 requires 80% of staff to be Argentine with two years' residence in the province. Both also reach contractors and subcontractors, which is where the buying actually happens. And the Agreement extends the Turnover Tax exemption to direct suppliers of the infrastructure works, not just to the project owner.
Outlook to 2027-2029, built on the verified data of this page and our analytical framework. We also publish what would invalidate it.
What could stall itrisks and how to track them
What could stall it
Each risk, with who or what could trigger it.
regulatorioThe export stability guarantee is conditioned by the very act that grants it: if the pipeline is not in operation, it falls awayThe national Secretaría de Energía, through art. 2 of Resolución 353/2025, on report IF-2025-88948099 of the Dirección Nacional de Economía y Regulación verif · Aug 25, 2025 ↗+
logisticoThe vessel arrives before its pipeline, and supply in the interval depends on surpluses whose firm capacity nobody has publishedThe schedule stated by the consortium itself: a 20-year contract for the Hilli Episeyo from the second half of 2027 against the pipeline's commercial start-up estimated in May 2028 verif · May 5, 2025 ↗+
judicialA preventive environmental damage action before the federal courts seeking suspension of the worksThe Asociación Argentina de Abogados Ambientalistas and the Fundación Ambiente y Recursos Naturales, filed on 9 Mar 2026, invoking proximity to Península Valdés prob · Mar 9, 2026 ↗+
judicialThe merits of the law that enabled activity in the gulf were never judgedThe Federal Extraordinary Appeal filed on 31 May 2023 before the Supreme Court, after Río Negro's Superior Tribunal de Justicia dismissed the action for lack of standing prob · May 31, 2023 ↗+
precioExposure to the LNG price within the vessels' charter formula itselfThe charter formula with Golar LNG, which cuts the hire if the FOB price falls from USD 7.5 to a floor of USD 6 per MMBtu verif · May 4, 2026 ↗+
tecnicoThe mooring system is on the critical path: it is manufactured in Europe and needs a specialised vessel to installThe supply chain of the SSY-type SPM mooring, manufactured abroad, with import customs challenges declared by the project itself verif · May 4, 2026 ↗+
regulatorioThe RIGI investment deadlines can be missed, and the act sets them with a figure and a dateArts. 3 and 4 of Resolución 559/2025, which set the 20% milestone in the first two years from notification and the 31 Dec 2035 deadline verif · May 5, 2025 ↗+
socialThe legal floor for local contracting may not be met, and the gap between registered and contracted companies is already largeThe regime of Ley 5805, which requires Obligated Parties to invite and to prefer Río Negro suppliers, with the provincial Register measuring the gap verif · Sep 1, 2025 ↗+
ambientalChallenge to the public participation procedure of the public hearingsThe Fundación Ambiente y Recursos Naturales, which argues the hearings work as a «mero trámite administrativo», invoking ILO Convention 169 and the Escazú Agreement verif · May 4, 2026 ↗+
The permits the works need, and where each one stands.
LNG Free Export Authorisation Certificate issued under art. 1 of Resolución 353/2025 of the Energy Secretariat, detailed in Annex IF-2025-89103464-APN-SSCL#MEC. Art. 3 further requires compliance with the obligations in subsections a) to d) of art. 6 and a) and b) of art. 8 of Annex I of Resolución 145/2025 of the Energy Secretariat verif · Aug 25, 2025 ↗
The published Environmental Impact Statement could not be located. What is on record is the resolution CALLING the public hearing (RESOL-2024-707-E-GDERNE-SAYCC#SGG) and that the hearing for the second unit was held on 16 September 2025 unconf · May 4, 2026
How to tell whether it is advancing
Observable facts that show whether the project is advancing, and where to look for each.
eventoThe re-tendering of the San Antonio Este Port concession+
eventoThe act approving the Environmental Impact Declaration, with its number+
trimestralThe project's first contract awarded to a company listed in the Río Negro Suppliers Register+
trimestralThe launch and yard departure of the second unit+
eventoCommercial start-up of the dedicated pipeline+
How we verified thisthe act, the gaps and the sources
The RIGI act, in detail
Apr 28, 2025 verif · May 5, 2025 ↗
5 May 2025, notice 28261/25, signed by Luis Andrés Caputo verif · May 5, 2025 ↗
The act’s articles, in detail
6 facts on the commitment
20 % of the minimum investment amount, over the first two years verif · May 5, 2025 ↗
The recitals set out the amounts committed for that milestone: USD 105,000,000 in the first year and USD 354,000,000 in the second, adding up to USD 459,000,000, «exceeding twenty percent (20%) of the minimum investment amount» verif · May 5, 2025 ↗
6.878 USD million — total investment declared by the applicant verif · May 5, 2025 ↗
2.825 USD million — computable assets of stages 1 and 2 under the RIGI verif · May 5, 2025 ↗
Southern Energy S.A., tax ID 30-71858062-1, registered at Leandro N. Alem 1180, Floor 9, Buenos Aires City. verif · May 5, 2025 ↗
The Energy Secretariat of the Ministry of Economy, or whomever it delegates to, as the area with specific competence, for the oversight and control of compliance with ley 27.742 and its implementing rules (art. 8 of the resolution) verif · May 5, 2025 ↗
How much it commits to invest, and how it pays for it
2 facts on the investment
Evidence an investment in computable assets equal to or above twenty percent (20%) of the minimum investment amount set out in art. 40 subsection c of the Annex to Decreto 749/24 (art. 3) verif · May 5, 2025 ↗
31 December 2035, under point (iii) of article 177 of ley 27.742 (art. 4) verif · May 5, 2025 ↗
What the regime gives in return
5 benefits of the regime
A Long-Term Strategic Export Project in the «Oil and Gas» sector, under art. 1 of the resolution. Art. 7 instructs the RIGI Coordination Unit to register it in the Registry of Long-Term Strategic Export Projects created by art. 2 of annex I of decreto 749/24 verif · May 5, 2025 ↗
Art. 10 notifies ARCA of the creation of a special tax ID for the project vehicle and of the application of the tax and customs incentives in chapter IV of title VII of ley 27.742 verif · May 5, 2025 ↗
Art. 11 notifies the Central Bank of the application of the foreign exchange incentives in chapter V of title VII of ley 27.742 verif · May 5, 2025 ↗
Art. 5 approves the list of goods and services the project vehicle may import under the exemption in art. 190 of ley 27.742, in file RE-2025-23485922-APN-DTD#JGM. ⚠️ The list itself is not published in the notice verif · May 5, 2025 ↗
Art. 6 accepts the arbitration clause proposed by Southern Energy S.A. and its shareholders, filed in file RE-2025-23486477-APN-DTD#JGM verif · May 5, 2025 ↗
What we could not confirm
There are 16 in this project. Each says why it could not be confirmed and what it would take to close it.
H-01The value of the Unit of Value used to calculate the environmental fees of art. 4.5 of the Acta+
The Acta sets the coefficients and the formulas in UV, but does not publish the value of the UV, so none of the four components can be converted into pesos with what is available
H-02The peso amount of the Control and Oversight Fee on Southern Energy's pipelines+
Both factors are there (420,000 m² and $215 per m²) but the cost is adjusted annually by CPI and the Acta sets neither the base nor the date of the first adjustment. Multiplying them today would mean presenting our own calculation as a fact
H-03Whether any municipality has joined Ley 5849 and whether the monitoring committee that conditions the transfer of funds to San Antonio Oeste has been appointed+
Art. 6 of Ley 5849 only INVITES municipalities to join, and art. 4 conditions the transfer on approval by the Provincial Executive «a través de la comisión de seguimiento que se designe por reglamentación». The act appointing it was not located
H-04The scope of the tax benefit at MUNICIPAL level+
The Province only undertakes to «realizar sus mejores esfuerzos» and to «instar a los municipios a adoptar medidas análogas». It is a best-efforts obligation: the provincial saving is firm, the municipal one is not guaranteed
H-05The list of specific certifications required to supply the project (ISO, API, IRAM, IERIC, offshore approvals)+
The provincial register asks generically for «habilitaciones y certificaciones pertinentes» without listing them, CoreMarine's note explicitly says it does not detail the requirements, and Golar's generic suppliers page did not open
H-06The supplier development plan filed under the RIGI+
It exists with identifier RE-2025-07079097, required by art. 47 item l of Decreto 749/2024, but it is not published
H-07The project's permanent OPERATING employment, and the breakdown of construction employment by trade and by locality+
The only sealed figure is the construction one, and it comes from the consortium's corporate website. The figure of 850 jobs circulating in the press could not be verified in any primary source, and no source separates Southern Energy's headcount from San Matías Pipeline's
H-08The number and date of the Environmental Impact Declaration approving the Environmental Impact Study of the two floating units+
What does exist is the resolution CONVENING the public hearing (RESOL-2024-707-E-GDERNE-SAYCC#SGG). The complete file is consulted in person at Colón 275, 2nd floor, Viedma, and no published Declaration was located. ⚠️ On the Neuquén side the gap is measured, not assumed: on the San Matías Pipeline, official gazettes 4540 to 4604 were read, covering continuously from 30 Jan 2026 to 18 Aug 2026, searching for the file number and the project's names: a single gazette matches, and it is the hearing notice already known. THE METHOD IS CONTROLLED —the same sweep does find the terms in gazette 4544— so the zero is not a false negative of the search. THE CONSEQUENCE: Golar LNG states to the market that environmental approval was obtained in both provinces, and that statement is NOT backed by a published act. It may be true and simply unpublished; what cannot be done is cite it as an act of the State. ⚠️ What this zero does NOT prove: that the resolution does not exist (it can be notified to the applicant without being published), nor anything about Río Negro, which is another jurisdiction with another procedure and where the sweep was not carried out.
H-09The Annex to Resolución 353/2025, with the detail of the export authorisation (volumes and conditions)+
The Boletín Oficial notice publishes the Annex as a separate download (IF-2025-89103464-APN-SSCL#MEC, download identifier 7446535) and the /pdf/download_anexo endpoint returns HTTP 500 to a scripted POST with all three parameter combinations tried. It is a limitation of automated access, not of the document: the file exists and is published
H-10The firm transport capacity supplying the first vessel between its arrival and the pipeline's start-up+
Resolución 559/2025 explains the mechanism —surpluses from the Gasoducto General San Martín offset by additional volumes from Vaca Muerta— but does not publish the contracted firm capacity in figures, and neither of the two investigations found it
H-11The procedural status of the two court cases: the preventive environmental damage action of March 2026 and the 2023 Federal Extraordinary Appeal+
No subsequent ruling was located in open sources in either case. The original filing of the 2026 action returns HTTP 404, and of the 2023 case only the filing of the appeal is on record
H-12The degree of compliance with the 20% investment milestone in computable assets over the first two years+
The act sets the obligation and the committed amounts (USD 105,000,000 and USD 354,000,000) but no official publication of actual compliance was located
H-13The project's PHYSICAL PHASE, with open primary evidence+
The physical phase is recorded as «under construction», but with a probable seal and on a single thread of evidence: the note saying the first year's supply arrives through a fifteen-kilometre link «already completed». A completed link is work carried out, and that is enough to state that construction started — not to say how far it has advanced. What still lacks primary backing is the bulk of the project: the vessels, the mooring and the subsea works, which sources still describe in the future tense. The evidence in circulation (pipe unloading at the port, more than 400 people working, a «60% progress») comes from press and press releases, and that 60% appears with the same wording in three outlets with neither numerator nor denominator. There is no progress report or act declaring it.
H-14The official calculation model behind the Province's projection of «more than USD 490 million over 20 years»+
The gap between the USD 91 million in the coverage of 14 Apr 2026 and the «more than USD 490 million» in the press release of 30 Apr 2026 is not a research gap but an arithmetic one: the roughly 399 million of difference matches the Variable Contribution of art. 5.2 of the Acta at its top band sustained for twenty years (USD 20,000,000 a year times twenty gives 400), and 91 plus 400 gives 491, which is exactly what «more than USD 490 million» claims. What remains unconfirmed is that the Province did THAT sum: no source publishes the model, nor the index band it assumes, nor whether it counts twenty full years of variable contribution even though the second vessel does not arrive before late 2028 and the first payment falls due before 28 Feb 2029. Nor can the make-up of the fixed 55 million be verified: the Acta allows 24.4 to be reconstructed —coastal fee and water royalties, USD 1,220,000 a year— and leaves the rest in fees whose factors it sets but does not convert into dollars. The reconciliation is published as our own estimate in the dossier, never as a fact.
H-15Whether the port logistics base that supplies the operation exists, and who builds it+
This is the block where the two investigations contradict each other head-on and neither opened a document that settles it: one lists it as a permanent port facility that stays behind, and the other quotes the consortium's top executive saying in June 2026 that the base «does not exist yet» and that the company «is building» one. The difference between declared and built decides whether it is infrastructure that stays or works still unawarded, and therefore whether it is an open contracting window.
H-16How many compressor plants remain in total and who owns each+
The consortium declares TWO compressor stations within the FLNG project's scope, and that has been recorded. What does not close is the system total: separately, the expansion of the Gasoducto General San Martín plant —the one supplying the first vessel in the initial stage— is attributed to a contractor, and another compressor plant is placed on the dedicated pipeline's route, which is another owner's work. It could not be determined whether the San Martín expansion is one of the two the consortium declares or a third set of works.
Frequently asked questions
How much LNG will it produce?The RIGI accession act approves output of between 1.5 and 2.2 million tonnes a year, «dependiendo de la disponibilidad de abastecimiento de gas»verif+
How much does the project invest?It depends which magnitude you look at, and they are two different numbers from the same act: declared total investment is USD 6,878 million and the regime's computable assets —the figure we publish in the fact sheet— are USD 2,825 millionverif+
The difference, USD 4,053 million, is nobody's error: they are two different magnitudes often used as synonyms. ↗
What does the RIGI require in exchange for the benefits?Evidencing, in the first two years from notification, an investment in computable assets of at least 20%verif+
The recitals give the amounts committed for that milestone: USD 105 million in the first year and USD 354 million in the second, adding up to USD 459 million. ↗
Who owns it?Southern Energy S.Aprob+
(CUIT 30-71858062-1) is a consortium of five: Pan American Energy, YPF, Pampa Energía, Harbour Energy and Golar LNG. The same five stand behind San Matías Pipeline S.A., owner of the pipeline that feeds the plant — which is not the same company, but its transport supplier. ↗
What does it leave in Río Negro, and what does a supplier pay?The Acta Acuerdo ratified by Ley 5849 sets a one-off community contribution plus a variable annual one tied to the LNG FOB index, capped at USD 20 million a year, on top of the coastal fee, water royalties and two oversight feesverif+
And the fact that decides whether it is worth selling to it: turnover tax and stamp duty are exempt, and the turnover tax exemption also reaches direct suppliers. ↗
How many jobs does it create?The consortium declares 1,900 direct and indirect jobs during construction, «principalmente de origen local»prob+
Is construction under way?Yesprob+
Until August 2026 everything published described the works in the future tense; the coverage of the pipe arrival is the first evidence of physical construction, with the onshore interconnection and the mooring systems under way. The first unit operates from 2027 and both together, year-round, from 2028. ↗