Standard Lithium announces results of PFS for South West Arkansas

Standard Lithium announced the positive results of a Preliminary Feasibility Study, or PFS, for the Company’s 100%-owned South West Arkansas, or SWA, Project. PFS highlights include: PFS indicates base case production of 30,000 tonnes per annum, or tpa, battery-quality lithium hydroxide monohydrate, or LHM; upside case of 35,000 tpa; Upgraded mineral resource averaging 437 mg/L underpins a minimum 20-year operating life; Base case after-tax NPV $3.1B and IRR of 32.8% and upside case after-tax NPV $3.7B and IRR of 35.4%, assuming production of 30,000 tpa and 35,000 tpa, respectively, and both assuming discount rate of 8% and a long-term price of $30,000/t for battery-quality LHM; average annual operating costs of $4,073/t of LHM over the operating life; Total capex estimate of $1.3B includes conservative 20% contingency; Upper Smackover Indicated and Middle Smackover Inferred Resource of 1.4 Mt and 0.4 Mt lithium carbonate equivalent, LCE, respectively, with an average lithium concentration of 437 mg/L and maximum reported lithium grade of 597 mg/L. “The robust economics from the South West Arkansas Project PFS showcase its incredible potential,” said Dr. Andy Robinson, President and COO of Standard Lithium. “Our exploration program in the first half of this year yielded significantly improved lithium concentrations and grew the total resource to 1.8M tonnes of lithium carbonate equivalent. The upgraded resource underpins an operating life of at least 20 years at competitive costs.”