Results Include US$3.1 Billion After-Tax NPV, 20 Year Life, Production of 30,000 Tonnes Lithium Hydroxide per Year and Upgraded Mineral Resource at Higher Average Lithium Grade

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EL DORADO, Ark., Aug. 08, 2023 (GLOBE NEWSWIRE) — Standard Lithium Ltd. (“Standard Lithium” or the “Company”) (TSXV:SLI) (NYSE American:SLI) (FRA:S5L), announced today the positive results of a Preliminary Feasibility Study (“PFS”) for the Company’s 100%-owned South West Arkansas (“SWA”) Project (the “Project”).

All figures are in US dollars unless otherwise stated.

PFS Highlights:

Lithium brine project in southwestern Arkansas. PFS indicates base case production of 30,000 tonnes per annum (“tpa”) battery-quality lithium hydroxide monohydrate (“LHM”); upside case of 35,000 tpa

20-year plus operating life. Upgraded mineral resource averaging 437 mg/L underpins a minimum 20-year operating life

Robust project economics. Base case after-tax NPV $3.1 billion and IRR of 32.8% and upside case after-tax NPV $3.7 billion 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

Competitive operating costs. Average annual operating costs of $4,073/t of LHM over the operating life

CAPEX of $1.3 billion. Total capex estimate of $1.3 billion includes conservative 20% contingency

Increased lithium grades support larger resource . 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 1.8 million tonnes of lithium carbonate equivalent. The upgraded resource underpins an operating life of at least 20 years at competitive costs.”

Source: https://finance.yahoo.com/news/standard-lithium-announces-positive-preliminary-050100498.html