D3E.ASX: Maiden Prospective Resource for PEL121, South Australia

Maiden Prospective Resource for PEL121, South Australia

Stock	D3 Energy Ltd (D3E.ASX)
Release Time	15 Jul 2026, 8:43 a.m.
Price Sensitive	Yes

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D3 Energy Announces Maiden Prospective Resource in South Australia

Key Points

Independently certified Prospective Resource for Hydrohelix and Cootanoorina prospects
Total Prospective net 2U Resource of 54 BCF recoverable helium, 88 BCF recoverable hydrogen, and 226 BCF of methane
Establishes a second, geographically diversified Prospective Resource base for D3 Energy in South Australia

Full Summary

D3 Energy Ltd is pleased to announce the independent certification of a maiden Prospective Resource for the Hydrohelix and Cootanoorina prospects, located within the Company's 100%-owned PEL121 exploration permit in the Arckaringa Basin, South Australia. The certification was undertaken by Sproule ERCE, a globally recognized independent reserves and resources auditor. The certification of a maiden Prospective Resource at Hydrohelix and Cootanoorina in both the Heavitree Sandstone and Fractured Basement further validates the helium and hydrogen system identified across PEL121 and adds to the scale of D3 Energy's broader South Australian resource position ahead of further work to mature the remaining leads identified across PEL121 and PEL122.