SMM August 17: Sigma Lithium Corporation, the largest producer of lithium oxide concentrates in the Americas, reported record second-quarter results with an EBITDA margin of 47%, up 39% quarter-on-quarter and the highest in company history. The producer, which operates the Grota do Cirilo project in Brazil, sold 24,400 tonnes of lithium oxide concentrate in the quarter for net revenues of $55 million, realizing an average price of $2,089/t, up 17% year-on-year. Gross and operating margins stood at 60% and 32% respectively, supported by a sharp reduction in costs: plant gate cost fell 36% QoQ to $401/t, CIF cost declined 33% QoQ to $452/t, and all-in sustaining cost eased 6% QoQ to $668/t, driven by upgraded mine operations and a 50% increase in production volumes. Total debt has been reduced 25% since Q2 last year.
The margin improvement comes as Sigma moves deeper into an aggressive expansion phase. The company is targeting production of 330,000 t/y in FY2027, up from a current run-rate of 240,000 t/y, with two new plants under construction set to lift installed capacity to 580,000 t/y by end-2027 and 830,000 t/y by end-2028 more than a threefold increase from current levels. That scale of expansion means Sigma's low-cost tonnes will be entering the global concentrate market at precisely the moment African producers are ramping their own beneficiation capacity, placing the two supply regions on a more direct collision course than in previous years. Zimbabwe's Chinese-backed sulphate plants and Mali's Goulamina project are among the African assets scaling toward full production over the same 2026-2028 window, and both regions will increasingly be competing for share of a concentrate market that is set to absorb significantly more volume from multiple continents at once.
SMM View: Sigma's cost trajectory illustrates how far unit economics can improve once a hard-rock operation reaches steady-state scale, and it sets a demanding benchmark against which African concentrate producers will be measured as they work through their own ramp-up curves. With low-cost Americas supply expanding rapidly, African projects still climbing toward full capacity face growing pressure to lock in cost competitiveness and secure offtake commitments before benchmark concentrate pricing comes under strain from the added global volume.
