H3 Energy fires twin-shot at WA gas giant and SA energy elephant

H3 Energy has lit the fuse on a defining growth phase, fast-tracking two of Australia’s largest onshore energy plays as it pivots from technical groundwork to full-tilt commercial execution.

A $3.5M capital raise has underwritten the push, backing the company’s plan to revive the long-overlooked Warro gas field and drill a basin-opening, multi-commodity basin play at Alinya. Together, the projects are emerging as credible contributors to Australia’s next wave of onshore energy supply.

Warro sits in the Perth Basin and is H3 Energy’s flagship near-term play. With a mid-case gas-in-place estimate of 3.2 trillion cubic feet equating to a P50 recoverable resource of around 1.5 trillion cubic feet, it is the largest discovered yet undeveloped gas resource in the basin. Its long dormancy was not due to a lack of gas; rather, it was due to flawed execution.

Legacy drilling struggled due to well design and completion choices rather than reservoir quality. Reinterpreted production logs now show multiple gas-only flow intervals, confirming a thick, continuous gas column that earlier campaigns failed to unlock.

‘We believe both projects have the potential to play a significant role in the domestic oil, gas and energy national supply.’

H3 Energy chief executive officer Nik Sykiotis

A full technical reassessment has sharpened the picture. Updated image log analysis has identified at least 11 gas-bearing zones in Warro-3, with individual intervals between 9 and 25 metres thick. The tight gas sands are laterally continuous, display low fracture complexity and include areas of elevated natural permeability, pointing to predictable reservoir behaviour and missed pay rather than missed charge.

Independent engineering studies by Molyneux Advisors delivered a blunt conclusion: there is nothing wrong with the rocks. Existing wells previously intersected multiple gas sands, including untested intervals. According to the consultant, target flow rates of 5 to 10 million cubic feet of gas per day per well are considered achievable.

Potentially re-using these old wells would cut capital intensity and timelines. At the same time, nearby infrastructure 30 kilometres away could position Warro for a fast move from appraisal to production and direct entry into the Western Australian gas market.

On a second front, H3 Energy has moved to advance its Alinya “3H” project, which sits in South Australia’s Officer Basin and spans 20,000 square kilometres.

The project is a genuine basin-scale play, carrying independently assessed 3U prospective resources of 4.3 trillion cubic feet of gas and 1.3 billion barrels of conventional liquids, with added hydrogen and helium upside. Few onshore projects in Australia combine this level of scale with multi-commodity exposure, placing the project firmly in company-making territory.

The basin hosts proven petroleum systems, with historical drilling recording both oil and gas shows. Multiple stacked reservoir–seal pairs are present, supported by Neoproterozoic and Cambrian source rocks. Geochemistry points to Type II–III kerogen, favouring aviation fuel and diesel-grade liquids. Traps have historically been difficult to define, leaving the basin largely unexplored.

Management believes this narrative has changed at Rickerscote. Mapped across multiple two-dimensional seismic lines, the prospect is a large structural closure measuring 40 kilometres by 8 kilometres. It is the company’s primary drilling target and will provide a clear test of the basin’s petroleum potential, with additional prospects identified across the broader acreage.

Alinya is being promoted as a true multi-commodity system, targeting oil, gas, hydrogen and helium, all to be tested at Rickerscote. The prospect is considered a direct analogue to Santos Limited’s Mount Kitty hydrogen–helium system, with materially stronger reservoir development and more effective sealing. Independent estimates suggest Rickerscote alone could host up to 209 billion cubic feet (Bcf) of helium.

The hydrogen and helium potential is interpreted within the deep Alinya and Pindyin reservoirs, which extend across multiple structures. Radiogenic granites could provide a viable hydrogen source, while thick evaporite salt seals offer long-term trapping. Evidence points to abiotic gas systems within the basin, supporting the hydrogen thesis, while helium remains a strategic, supply-constrained commodity.

Permits are now in place and Rickerscote is drill-ready. Road access exists, though upgrades would be required. The project sits 250 kilometres west of Coober Pedy and 600 kilometres from Moomba for gas tie-in, with Port Bonython at a similar distance for oil export. In the event of a meaningful discovery, helium would likely be processed via a stripping plant and trucked, while hydrogen would require on-site conversion due to transport constraints.

The $3.5M capital raise announced in April delivers a clean funding runway to push both Warro and Alinya towards commercial outcomes. Notably, it does so without stretching the balance sheet and signals increased market confidence in the company’s growth strategy across both assets.

H3 Energy chief executive officer Nik Sykiotis said: “The last 12 months have been spent focusing on advancing the Alinya project and the Warro project through detailed technical assessment aimed at confirming the prospectivity of two significant projects.”

H3 Energy is running a clear two-track strategy. At Warro, the objective is to provide a near to mid-term gas supply into a local WA market that increasingly looks to be heading for a shortage.

At Alinya, the ambition is bigger. H3 is chasing a basin-opening play, deliberately building exposure to hydrogen and helium alongside hydrocarbons to position the portfolio for both transitional and future energy demand.

The next 12 months loom as a critical proving ground. H3’s capital-light model is now in play, with the company actively seeking partners to fund the next phase across both projects, while retaining meaningful equity exposure.

At Warro, appraisal is front and centre. The goal is sustained gas flow and commercial demonstration using modern engineering, refreshed datasets and contemporary completion techniques. A $50,000 Western Australian Government grant will fund reprocessing of decade-old three-dimensional seismic across the permit, sharpening imaging of the deeper Cadda Formation and Cattamarra Coal Measures reservoirs. Although these targets were previously intersected, they were never tested and still sit outside current resource estimates. Meanwhile, partner discussions are progressing internally,

At Alinya, the task is execution. Sydney-based LAB Energy has been engaged to manage the farm-out process to secure a partner to fund the Rickerscote-1 well. The timing also appears to line up neatly with renewed industry appetite for large-scale conventional discoveries.

The domestic energy backdrop is tightening fast. Regulators are flagging local gas shortfalls in Western Australia later this decade, lifting the strategic value of new onshore supply such as Warro.

At the same time, Australia’s onshore basins are back in focus as operators chase scale and security. Helium has re-emerged as a critical commodity following Middle East supply disruptions and Australia’s slide into import dependence following the closure of the Darwin processing plant. Demand for hydrogen as a cleaner fuel is also accelerating.

H3 Energy looks to be straddling both sides of the energy equation, reviving a proven and overlooked gas giant in Western Australia while advancing a frontier-scale, multi-commodity opportunity in South Australia.

The pieces are clicking into place. The data is sharper, initial funding is secured and the company’s strategy is set. If Warro delivers consistent flow and Alinya delivers discovery, H3 Energy could pivot rapidly from explorer to producer with a multi-commodity profile few peers can match.

The next chapter hinges on execution and whether this reworked portfolio can attract the right farm-in partners with the commitment needed to convert technical promise into flowing gas, liquids and molecules.

Is your ASX-listed company doing something interesting? Contact: mattbirney@bullsnbears.com.au