Amplitude Energy Approves A$190 Million to A$210 Million East Coast Gas Development

Amplitude Energy has taken a final investment decision on the development phase of its East Coast Supply Project in Australia's Otway Basin, committing to connect discovered offshore resources to existing processing infrastructure. The company is targeting gross production of up to 90 terajoules a day from 2028.

The development is expected to cost Amplitude Energy between A$190 million and A$210 million on a point forward net basis across the 2027 and 2028 financial years. The company said its subsea contracting outcomes were in line with internal expectations and that the development program had been contracted with measures intended to reduce cost risk.

The project uses a brownfield model. New wells and subsea connections are intended to feed existing offshore pipelines and the Athena Gas Plant in Victoria rather than requiring an entirely new processing chain. That approach can shorten development schedules and lower capital intensity, although offshore execution, well performance and final integration still determine whether the forecast benefits are achieved.

Athena has processed gas and liquids from the offshore Casino, Henry and Netherby fields since December 2021. Amplitude describes the plant as a processing hub with capacity for future Otway Basin developments. The current investment decision therefore extends an operating system rather than beginning with an undeveloped site.

Amplitude has also sanctioned the Nestor exploration well. Nestor is separate from the volumes already underpinning the development decision and could add resources and production only if drilling results in a commercial discovery. The company also reported that the Juliet 1 well had been completed and that an Annie development well would follow.

The production target is significant because the gas is intended for Australia's domestic southeast market. Amplitude says its output is dedicated to local customers, including homes, manufacturers and power generators. The company lists AGL Energy, Alinta Energy, EnergyAustralia and Visy among customers in its gas supply portfolio.

Regulatory and environmental work remains part of the schedule. Amplitude's consultation register lists accepted environment plans for the Annie 2 development well and for East Coast Supply Project well connections, with activities planned across periods extending from 2026 to 2030. Acceptance of those plans is an important enabling step, but it does not eliminate construction, drilling or operating risk.

The financial commitment should be read carefully. A final investment decision means the company and its partners have authorized the development phase on the assumptions currently available. It does not guarantee delivery of the full 90 terajoules a day, the success of the Nestor exploration well, the timing of first gas or the returns that management expects from its mid case assumptions.

For the eastern Australian physical economy, the strategic point is the use of existing infrastructure to bring additional supply to market. Gas remains an input for manufacturing and a fuel for electricity generation when renewable output is unavailable. The project's commercial value will therefore be measured not only by reservoir performance, but by whether it reaches domestic buyers on schedule and within the stated capital range.

The next milestones are concrete: completion of the Annie development drilling sequence, progress on subsea connections, results from Nestor, and evidence that spending remains within the A$190 million to A$210 million range. Those disclosures will show whether the brownfield strategy translates into the capital efficiency and 2028 production start that Amplitude now projects.