Santos (ASX:STO) Targets First Gas in 2028, Shares Tick Higher

Sonal Goyal

12 May 2026 01:42 PM AEST

Santos (ASX:STO) Targets First Gas in 2028, Shares Tick Higher

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Highlights

Santos has approved the Agogo Production Facility Tie-In Project, with Santos' net Capital Expenditure of approximately USD 160 million
Project Economics include an expected IRR greater than 50% and payback period of less than four years from final Investment decision
First gas is targeted for the second quarter of 2028, with an approximately 12-year production plateau and potential to continue beyond 2050

Santos Limited (ASX: TO) shares edged higher by 1.06% to AUD 7.60 on 12 May 2026, a measured but positive response to the company's announcement of a final investment decision (FID) on the Agogo Production Facility Tie-In Project in Papua New Guinea. The modest gain is consistent with market behaviour around major project approvals from established producers, where positive news is frequently anticipated by analysts and largely priced in ahead of formal confirmation. Over the past 12 months, STO shares have appreciated by approximately 21.41%, reflecting the company's broader operational momentum and Commodity price tailwinds.

Project Overview: Agogo Production Facility Tie-In

The Agogo Production Facility Tie-In Project is a brownfield development designed to connect the Santos-operated Agogo Production Facility to the existing PNG LNG gas pipeline via a new 19-kilometre pipeline. The project also involves the drilling of two new wells and associated production facility modifications. Critically, it leverages already-constructed PNG LNG processing and export infrastructure, which substantially reduces the capital requirement relative to what a greenfield development of equivalent scale would Demand.

Santos holds a 39.9% interest in the PNG LNG joint venture, with joint venture partners including ExxonMobil PNG Ltd, ENEOS Xplora, Kumul Petroleum, and the Mineral Resources Development Company. The decision to proceed followed approval by the PNG LNG joint venture, and Santos has confirmed that key regulatory approvals are in place and required land access has been secured.

Capital Expenditure and Project Economics

Santos' share of capital expenditure is approximately USD 160 million, against gross project capex of approximately USD 400 million spread over three years. The project's economics are striking for a development of this nature: management has guided to an expected internal rate of return (IRR) greater than 50%, and a payback period of less than four years from FID — or approximately two years from the targeted first gas date in the second quarter of 2028. These metrics position the Agogo Tie-In as an unusually high-returning brownfield project within Santos' portfolio.

The strong economics are driven by several factors: the use of existing PNG LNG infrastructure eliminates the need for standalone processing and export facilities; the project's incremental production capacity of approximately 135 million standard cubic feet per day (mmscf/d) on a gross basis, with Santos' net share of approximately 54 mmscf/d, delivers meaningful throughput from a contained capital base; and the project's execution builds directly on Santos' established operational presence in Papua New Guinea.

Reserve Conversion and Production Profile

One of the most significant aspects of the Agogo FID is its reserve implications. The project will convert Santos' 66 million barrels of oil equivalent (mmboe) of 2P undeveloped reserves into developed reserves — a transition that represents both a reduction in project risk and an enhancement of the company's reported asset base. Management has guided to an approximately 12-year production plateau, with the potential to continue production beyond 2050, underpinning the long-term contribution of this asset to Santos' overall portfolio.

The incremental production profile, combined with the relatively short construction and commissioning timeline, positions Agogo to make a meaningful contribution to Santos' output in the second half of this decade. Chief Executive Officer Kevin Gallagher described the project as supporting Santos' long-term production profile, while also characterising it as consistent with the company's disciplined capital allocation criteria — a signal to the market that Santos is not stretching its Balance Sheet for growth.

Operational Readiness and Execution

Australia and PNG Chief Operating Officer Brett Darley provided detail on the execution pathway, noting that detailed design for the facility modification is being progressed, contracts for the two main construction packages are being advanced, and the temporary construction camp is being established to maintain momentum toward the Q2 2028 first gas target. Darley also highlighted Santos' community investment program through the Santos Foundation and its engagement with landholders and local Stakeholders in the Highlands as part of maintaining the social licence necessary for a project of this nature in Papua New Guinea.

Strategic Context: PNG LNG and Santos' Broader Portfolio

The Agogo Tie-In decision fits within Santos' broader strategy of building and growing production from its existing portfolio of Assets. PNG LNG has been a cornerstone of Santos' production base since the company's Acquisition of Oil Search, and Agogo represents a continuation of that strategy through organic, brownfield development. For investors assessing Santos' medium-term production outlook, the conversion of undeveloped reserves at attractive economics and within an established operating Jurisdiction represents a low-risk increment to the production profile compared to greenfield alternatives.

Conclusion

Santos' FID on the Agogo Production Facility Tie-In Project represents a high-quality, high-return addition to a portfolio that has been generating increasing investor confidence. The combination of strong project economics — IRR above 50%, payback under four years — a clear execution pathway with regulatory approvals secured, and a production profile extending potentially beyond 2050 makes the Agogo decision a strategically significant milestone. While the market's 1.06% daily response was measured, the project's long-term contribution to reserves, production, and Cash Flow reinforces Santos' positioning as one of Australia's premier energy producers.

FAQs

Q: What is the Agogo Production Facility Tie-In Project?

A: It is a brownfield project that will connect the Santos-operated Agogo Production Facility to the existing PNG LNG gas pipeline via a new 19-kilometre pipeline, along with two new wells and production facility modifications, targeting first gas in Q2 2028.

Q: What is Santos' share of the project cost?

A: Santos' share of capital expenditure is approximately USD 160 million, with gross project capex of approximately USD 400 million spread over three years.

Q: What are the project's expected financial returns?

A: Management has guided to an expected IRR greater than 50% and a payback period of less than four years from the final investment decision, or approximately two years from first gas.

Q: How much production capacity will the Agogo project add?

A: The project will add incremental production capacity of approximately 135 mmscf/d on a gross basis, with Santos' net share of approximately 54 mmscf/d.

Q: What does this project mean for Santos' reserves?

A: The FID will convert 66 mmboe of Santos' 2P undeveloped reserves into developed reserves, reducing project risk and strengthening the company's reported asset base.

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