Supreme Court Validates 2022 Lithium Reform

Mexico's Supreme Court validated the 2022 Mining Law reform reserving lithium exploration, exploitation, and processing exclusively to the state, settling a constitutional challenge and consolidating the legal framework under which LitioMx operates, a ruling with direct implications for private mining companies, foreign investors and the energy transition supply chain. The decision reinforces state control at a moment when global lithium demand is accelerating, with consumption projected to rise 13.5% to 1.48Mt LCE in 2026, yet LitioMx's 2026 budget of MX$13.9 million (US$805,000) covers only operational costs, leaving Mexico structurally behind Chile, Bolivia and Australia in securing a position in the global battery and EV supply chain.

Mexico's Supreme Court has validated the 2022 Mining Law reform that declared lithium a strategic resource under exclusive state control, rejecting a constitutional challenge filed by a minority of legislators and clearing the legal framework under which LitioMx operates, even as structural, budgetary and technical obstacles continue to limit Mexico's ability to compete in a tightening global market.

The court dismissed five arguments brought by the challengers, including alleged violations to the constitutional mining framework, the principle of legal certainty, and the failure to consult indigenous communities. On the latter point, the justices ruled that prior consultation was not required because the reform did not generate a direct and differentiated impact on the human rights of indigenous and Afro-Mexican communities. 

The ruling upheld Art. 1, 5 bis, and 10 of the Mining Law, which reserve to the state the exploration, exploitation, processing and use of lithium, prohibit private concessions, and establish lithium deposit zones as mining reserve areas.

The court also affirmed that this classification complies with the principles of legality and legal certainty, provided its application follows procedures set out in the Mining Law and its regulations, which require technical justification and the involvement of the Mexican Geological Survey. 

Despite the legal validation, LitioMx faces significant constraints. For the third consecutive year, its budget covers only operational costs. The 2026 Federal Budget allocates MX$13.9 million (US$805,000) to the agency, a 7.7% increase from MX$12.9 million in 2025, which itself followed a 27.3% rise over 2024's MX$9.8 million. Rubén del Pozo, President, AIMMGM, questioned whether a state-run entity could sustain exploration processes that typically demand multi-million-dollar investments and extended timelines.

"Lithium is not something you can simply extract and sell for profit," Del Pozo said. "First, you need to know where it is, how much of it exists, and in what condition. That requires time, investment, and technology."

President Claudia Sheinbaum has acknowledged the technical complexity, noting that Mexico's lithium is primarily found in clay form, which complicates extraction and raises costs. 

"We do have the technology to extract lithium," Sheinbaum said. "The challenge lies in evaluating the cost of processing lithium from clay, essentially a mud-like substance mixed with lithium, which is much more difficult than extracting it from sandy deposits." 

She also framed access to critical minerals as a strategic priority amid rising global protectionism and trade restrictions, including US tariffs. "Lithium is considered a critical material. These critical minerals or rare earth elements are vital for renewable energy technologies, including batteries, wind turbines, photovoltaic panels, and EVs. These materials are indispensable," she said.

A parallel effort involves PEMEX, which is exploring lithium extraction from oilfield brines as part of its 2025–2030 Strategic Plan. CEO Victor Rodríguez disclosed that lithium concentrations comparable to those in Bolivia have been identified at drilling sites across five states. PEMEX is evaluating direct lithium extraction (DLE) technologies and may establish a subsidiary, PEMEX Lithium, to produce "petrolithium" from petroleum brines, a move that could enable collaboration with LitioMx. 

Mexico holds roughly 1.7Mt of lithium across 82 identified deposits in 18 states, with Sonora leading at 13 deposits, followed by Puebla with 12 and Oaxaca with nine. Even so, the country trails Chile, Bolivia and Australia in advancing its position in the global supply chain. "While Mexico debates state control of lithium, the global automotive industry is already securing supply contracts elsewhere, leaving the country out of the investment race for batteries and electric vehicles," said Armando Alatorre, Vice President, CIMMGM.

The gap is widening as global demand accelerates. S&P Global Energy CERA projects the lithium carbonate surplus will fall to 109,000t in 2026, down from 141,000t in 2025, as global consumption rises 13.5% to 1.48Mt LCE and production increases 9.9% to 1.58Mt LCE.

Energy storage has become the primary demand driver, with the battery energy storage system market projected to expand 7.7% in 2026, reaching 301GWh of new installations. Global plug-in hybrid EV sales are expected to reach 22.77 million units in 2026, a 16.8% increase from 2025. In China, sales of heavy-duty electric trucks rose 190.6% through November 2025, and the global share of new energy heavy trucks is expected to exceed 30% by 2026.

China, Australia and Chile, alongside Argentina and Bolivia, currently supply roughly 94% of the world's lithium used in batteries, electric vehicles and renewable energy. China controls the largest share of processed lithium and lithium chemicals, making it the most influential player across the global supply chain.