Rio Tinto’s compulsory acquisition of ERA shares hits a legal snag with an ongoing appeal, while the Ranger Rehabilitation Project faces delays and rising costs, particularly in the critical Pit 3 capping.
- Rio Tinto holds over 98% of ERA shares but faces appeal against compulsory acquisition
- Ranger Rehabilitation Project spends $54 million with Pit 3 capping delays and cost risks
- Water treatment operations delayed, awaiting Q3 2026 commencement
- ERA plans power purchase agreement to support rehabilitation post-infrastructure
- Sale of Cooper Creek JV interest agreed, pending government approval
Compulsory Acquisition Stalled by Appeal
Rio Tinto has secured ownership of more than 98% of Energy Resources of Australia (ASX:ERA) shares and initiated compulsory acquisition proceedings to buy out remaining shareholders. However, the process has hit a legal roadblock. After 123 shareholders, representing roughly 43% of the shares subject to acquisition, lodged formal objections, the matter required Federal Court approval.
The Court ruled in June 2026 that the compulsory acquisition could proceed, but Zentree Investments Limited lodged an appeal in early July. This appeal keeps the acquisition in limbo, delaying ERA’s delisting and share suspension timeline and extending uncertainty over ERA’s ownership structure.
Ranger Rehabilitation Progress and Emerging Risks
During the June quarter, ERA spent approximately $54 million on rehabilitation activities at the Ranger Project Area, focusing heavily on the capping of Pit 3; a linchpin in the closure schedule. Pit 3 capping works resumed after a pause in December 2025, but ongoing design reviews, engineering trials, and regulatory approvals have slowed progress.
A trial of the finger filling capping method was completed in June, with a trial of the end tipping method planned for Q3 2026. ERA anticipates a reforecast of the rehabilitation schedule and costs by August, expected to reveal material increases in both. This raises the prospect of higher near- and long-term rehabilitation expenses, injecting fresh uncertainty into the project’s financial outlook.
Water Treatment Delays and Operational Updates
Water treatment operations continued with distillate production aligning with plans, and a scheduled maintenance shutdown of the Brine Concentrator was completed safely. However, overall brine injection fell short of forecasts, requiring remediation and ongoing monitoring.
Operations to treat the more dilute upper layers of process water, using the Brine Squeezer, have been delayed due to pending finalisation of supporting arrangements but are now expected to commence in Q3 2026. Meanwhile, higher-than-forecast rainfall during the recent wet season is prompting reassessments of the longer-term water balance.
Corporate Moves and Asset Sales
ERA’s corporate payments to related parties, mainly Rio Tinto group companies, totalled $1.7 million for the quarter, covering directors’ fees, consulting, and commercial services on arm’s length terms.
Legal proceedings initiated by ERA over the non-renewal of the Jabiluka Mineral Lease remain on hold pending the outcome of the compulsory acquisition appeal. Separately, ERA entered a binding agreement with Deep Yellow Limited to sell its 50% interest in the Cooper Creek Joint Venture for A$648,000, subject to government approval.
Jabiru Airport Rehabilitation Transition
ERA and major stakeholders have reached an in-principle agreement to retain Jabiru Airport, involving transferring rehabilitation liability and associated financial securities to a third party. ERA will continue airport operations until March 2027 to facilitate this handover, contingent on formal agreements and provisions being finalised with the Commonwealth.
Bottom Line?
ERA’s rehabilitation timeline and costs are poised for revision amid legal and operational uncertainties, with the compulsory acquisition appeal and Pit 3 capping reforecast key upcoming catalysts.
Questions in the middle?
- How will the outcome of Zentree’s appeal affect the timeline and terms of Rio Tinto’s compulsory acquisition?
- What magnitude of cost and schedule increases will the Pit 3 capping reforecast reveal, and how might this reshape ERA’s rehabilitation budget?
- Will government approval for the Cooper Creek JV sale proceed smoothly, and what strategic impact will this have on ERA’s asset portfolio?