Peninsula Energy Retracts 2026 Output Forecast Amid Operational Hurdles at Lance Uranium Project

Withdrawal of 2026 Production Forecast and 2027 Outlook Confirmation at Lance Uranium Project

Peninsula Energy has retracted its earlier 2026 production forecast of 400,000 to 500,000 pounds of U3O8 for the Lance Uranium Project following a slower-than-anticipated ramp-up of low-pH in-situ recovery operations in the first half of 2026. The production shortfall is attributed to lower solution flow rates in the wellfield and extended optimisation of wellfield chemistry, particularly affecting Mine Units 1, 3, and 4. Initial acidification results from Mine Unit 4 were promising when guidance was set, with expectations that this key production area would offset weaker performance from Mine Unit 3; however, operational challenges delayed achieving stable production.

Despite withdrawing the 2026 forecast, Peninsula reaffirmed its 2027 production guidance of 500,000 to 600,000 pounds of U3O8, reflecting management’s confidence that the challenges are temporary and unlikely to affect output beyond 2026. The company emphasized that while the production ramp-up timeline has shifted, its fundamental valuation and long-term outlook for Lance remain intact. Operational insights gained during commissioning are being integrated into future mine development to enhance production outcomes.

Wellfield Operational Challenges and Flow Rate Constraints at Mine Unit 4

Peninsula detailed specific operational issues encountered during Mine Unit 4 development, identified as the primary production zone for 2026 and 2027. Gas generation within sections of the wellfield proved more complex than expected, causing reduced solution flow rates and prolonging the timeline to stable production. These gassing issues took longer to resolve than anticipated but were characterized as operational challenges related to wellfield hydraulics, solution management, and chemistry optimisation—not deficiencies in the Lance uranium resource.

Refinement of wellfield chemistry in the initial 2–3 header houses of Mine Unit 4 remains a priority. The company noted that assessing chemistry modifications requires time, particularly at the start of acidification for each new header house. These operational learnings have prompted adjustments in future development plans, including revised acidification strategies, improved wellfield design, and optimised hydrogen peroxide management, now being applied to Header Houses 15 through 19.

Header House 14 Validates Low-pH Uranium Extraction Efficacy

Peninsula reported strong performance from Header House 14 (HH14), demonstrating the effectiveness of the low-pH recovery process and the quality of the Lance uranium resource. HH14 achieved average uranium concentrations of 50–60 milligrams per litre of U3O8 during May to June operations (Pore Volume 5 to 6), more than double the historical averages recorded during alkaline leach operations in Mine Units 1 and 2. This result reinforces management’s confidence in both the uranium resource and the low-pH extraction methodology.

The company views the high uranium head grades at HH14 as validation of the low-pH acid leach approach, indicating that operational challenges are unrelated to resource quality or extraction efficiency. These encouraging outcomes support confidence in the project’s future production profile and long-term economics despite current ramp-up delays.

Lance Project: Pioneering Commercial Low-pH ISR Uranium Recovery in the U.S.

Peninsula emphasized that the Lance Uranium Project is the first commercial-scale application of low-pH (acid leach) in-situ recovery uranium extraction technology in the United States, resulting in significant operational learning curves during commissioning and early production. Unlike conventional alkaline ISR operations, limited domestic experience, workforce capability, and industry knowledge have been available for low-pH recovery at commercial scale.

The decade-long slowdown of uranium ISR projects in the U.S. further complicated deployment, as the industry lacks the skilled personnel and technical expertise previously available during active ISR development periods. Peninsula reported that the operational learning curve was steeper than expected, necessitating refinement of operating practices, development of specialised technical skills, and optimisation of wellfield performance under commercial conditions. These commissioning and early production activities have substantially improved understanding of wellfield hydraulics, acidification, chemistry management, and production optimisation, which management expects will enhance future performance and reduce ramp-up risks.

Transition to Owner-Operated Drilling Model and Cost Efficiency

Peninsula has initiated a transition to an owner-operated wellfield drilling model, aiming to significantly reduce drilling costs, increase operational flexibility, and support future wellfield development at Lance. Specific cost savings and timelines were not disclosed. This strategic shift complements other operational improvements following initial production, such as revised acidification strategies and enhanced wellfield design, all targeting improved production trajectory and project economics.

Robust Financial Position Backed by US$56 Million Funding

Peninsula maintains a strong financial position to support Lance’s production ramp-up, with an unaudited cash balance of US$47.1 million as of 17 July 2026. This reflects a recently secured US$56 million funding package. The solid cash reserves provide flexibility to fund operational needs and capital investments, including Mine Unit 5 development and ongoing production activities.

The company’s financial strength underpins continued investment in personnel training, wellfield development, and operational enhancements derived from commissioning learnings. Management expressed confidence that this financial foundation will help navigate current operational challenges and achieve the reconfirmed 2027 production targets.

Mine Unit 5 Development Progress and Investment Decision Timeline

De-risking activities for Mine Unit 5 (MU-5) continue to progress well, with a final investment decision expected before the end of 2026. Details regarding the scope, timing, or scale of MU-5 development were not disclosed. MU-5 is a critical element of Peninsula’s longer-term production expansion strategy beyond Mines Units 1, 3, and 4.

The anticipated investment decision timeline indicates management’s commitment to sustaining development momentum despite current ramp-up challenges. It reflects confidence that operational issues impacting 2026 production will be sufficiently resolved to support future mine unit investments and the company’s long-term production goals.

Lance Project’s Resource Base and Central Processing Plant Capacity

Peninsula highlighted the Lance Uranium Project’s substantial long-term value, citing one of the largest permitted in-situ recovery uranium resources in the U.S. as a major competitive advantage. The project includes a 2.0 million pounds per annum capacity Central Processing Plant (CPP), supporting the reconfirmed 2027 production guidance of 500–600 thousand pounds of U3O8 and future production ambitions. While capital costs and commissioning timelines for the CPP were not disclosed, the facility represents a significant asset underpinning project economics and capacity.

Management stated that the combination of a large permitted uranium resource, established CPP, and rising demand for secure domestic nuclear fuel positions Lance favorably to benefit from strengthening uranium market fundamentals over the medium to long term. This outlook reflects the company’s assessment of broader market dynamics and the strategic benefits of operating a permitted, commercial-scale uranium recovery operation in the U.S., despite current operational learning curves associated with low-pH ISR technology deployment.

Operational Learning Curve and Pathway to Enhanced Production Performance

Peninsula revealed that operational experience gained in early 2026 has led to key changes in development plans and commissioning procedures. These include revised acidification strategies, improved wellfield design, optimisation of hydrogen peroxide management (the oxidant enhancing uranium extraction rates), enhanced flow recovery programs, and modifications to future header house development and commissioning. These learnings are being applied to Header Houses 15 through 19 and are expected to yield better production results.

Management attributes operational challenges to wellfield hydraulics, solution flow management, and chemistry optimisation rather than fundamental issues with the low-pH ISR process or uranium resource quality. The strong uranium head grades at Header House 14, significantly exceeding historical alkaline leach averages, support this view. The company’s confidence that these challenges will not impact production beyond 2026, combined with the reconfirmed 2027 guidance, underscores management’s belief that the operational learning curve is being effectively managed to improve future production as additional mine units are developed and commissioned.