Smackover Lithium Concludes National Environmental Policy Act Review for South West Arkansas Project with Finding of No Significant Impact

On May 14, 2026, Smackover Lithium – a 55 % Standard Lithium / 45 % Equinor partnership – announced that the U.S. Department of Energy concluded the NEPA review for the South West Arkansas (SWA) lithium brine project with a Finding of No Significant Impact (FONSI). The review imposed no further federal mitigation measures or conditions. The company stated this was “the final expected federal government hurdle” before a Final Investment Decision (FID). Construction is expected to begin in 2026 and first commercial production in 2029. The project is backed by a $225 million DOE grant, and partnership workstreams now focus on EPCC/EPCM contracts, customer offtake, and project financing.

The FONSI clears the last major federal environmental permitting obstacle for the SWA project, significantly de‑risking the path to FID. However, management had explicitly guided NEPA completion in Q2 2026 as part of its roadmap (Q4 2025 and Q1 2026 earnings), so the outcome was widely telegraphed and fully expected. The release does not introduce any new, market‑moving information beyond delivering on a scheduled milestone. While the step is critical for the project, it falls into the category of a positive but routine development – the market had already priced in a high probability that federal clearance would be obtained around this time. Therefore, the impact is Routine – Positive.

Standard Lithium is advancing two world‑class lithium brine assets in the Smackover Formation of Arkansas and Texas, using direct lithium extraction (DLE) technology. The South West Arkansas (SWA) Project is the flagship – a 55 %/45 % joint venture with Equinor, with an initial Phase 1 capacity of 22,500 tonnes per year of battery‑grade lithium carbonate. A positive Definitive Feasibility Study (DFS) pegged an unlevered pre‑tax IRR of 20.2 %, all‑in costs of $5,924/t, and a $1.45 billion capex. Reserves stand at 447,000 t LCE. The project is designated a FAST‑41 priority and has been awarded a $225 million DOE grant. First production is targeted for 2029. The East Texas Franklin Project holds a maiden inferred resource of 2.2 Mt LCE at a grade of 668 mg/L (highest in North America), with a long‑term vision of >100,000 tpa production.