D3 Energy Ltd (ASX:D3E, OTCQB:DNRGF) has posted a solid performance in its quarterly activities report for the period ending June 30, 2025, highlighted by a major technical milestone and continued strategic expansion. The company made substantial headway in advancing its flagship ER315 helium and methane project in South Africa while broadening its portfolio through acquisitions in Australia’s helium and hydrogen sector.
D3 Energy highlighted the post-period-end completion of a maiden reserve certification for ER315, a key technical step towards finalising the company’s Production Right Application in South Africa. A successful retesting at the RBD03 well demonstrated a 32% increase in gas flow rates, further validating the geological model.
In addition, the company noted progress in its strategic expansion over the quarter, acquiring prospective helium and hydrogen permits in South Australia’s Arckaringa Basin.
Post-period technical and commercial milestones
In the weeks following the quarter’s close, D3 Energy secured a maiden reserve certification for its ER315 permit area from global energy consultancy Sproule ERCE. It marks a critical technical and commercial achievement, with certified reserves of 7.21 billion cubic feet (bcf) of 1P gas, 5.45 bcf of net methane, and 0.353 bcf of net helium. The certification was based on only 16 planned wells along the western Virginia fault line — just a fraction of the total planned wells for the broader ER315 project.
Notably, the certification provides the final documentation required for D3’s Production Right Application submission, which is on track to be lodged with South African authorities well ahead of schedule and under budget. D3 expects the additional seismic work in the coming years to unlock even more reserves, significantly enhancing the resource potential across its extensive acreage.
Appraisal success at RBD03 well
During the quarter, D3 Energy completed a successful clean-out and retesting operation at its RBD03 well, originally drilled in 1982. The results confirmed a 32% increase in flow rates, with average gas flow reaching 194 Mscfd, up from 147 Mscfd in prior tests.
The successful outcome supports the company’s geological model, particularly the role of faulting in helium and natural gas migration, reinforcing the long-term potential of its South African assets.
Strategic expansion into South Australia
D3 Energy has expanded its footprint beyond South Africa through the acquisition of two highly prospective helium and hydrogen exploration permits in South Australia’s Arckaringa Basin (PEL 121 and PEL 122).
The strategic move strengthens D3’s portfolio with drill-ready prospects, enhancing its ability to support modular plant infrastructure while diversifying its asset base. The acquisition not only positions the company to tap into emerging opportunities in the Australian helium and hydrogen markets but also aligns with its long-term goal to build a globally relevant portfolio of critical energy assets.
Contingent and prospective resources
D3 Energy holds a significant contingent and prospective resource at its ER315 project, with 1C, 2C, and 3C recoverable gas resources certified at 329.44, 533.02, and 835.07 bcf, respectively. It also holds a recoverable gas resource of up to 1,875.35 bcf in its 3U (high estimate) category, with additional resources in the 1U and 2U categories totalling 228.44 bcf and 661.32 bcf, respectively.
These extensive resources underpin D3’s plans for future development, with the company progressing towards production at ER315 while advancing exploration across its broader acreage.
Financial and corporate highlights
D3 Energy reported a cash balance of about $5.3 million at the end of June 2025, which is expected to support ongoing exploration and application preparation activities. The company’s key expenditures during the quarter were focused on Production Right Application preparation, exploration and testing activities, along with general administration costs.
D3 also noted that its exploration and feasibility costs are tracking under budget, due to better-than-expected production results and reduced drilling costs.
Looking ahead, D3 Energy is poised to submit its Production Right Application ahead of schedule as it continues working towards the development of its ER315 project and expanding its international footprint.