On June 11, Codelco and the French research institute CEA-Liten formalized a one-year technology development agreement to solve a hard problem: how to run heavy electric equipment thousands of meters underground in deep copper mines without melting the ventilation system or starving the mine of power. The agreement involves the world's second-largest copper producer, Europe's leading lithium battery patent holder, France's government co-financing mechanism for tech transfer, a Chilean academic center specializing in mining electromobility, and a French battery manufacturer supplying prototypes. This is not a press release about sustainability commitments, it is a government and capital-backed specification exercise that will directly dictate what equipment Codelco buys for its deepest operations in the next five to ten years.
Codelco's underground operations in Chile run some of the world's deepest block cave and panel cave mines, where copper ore sits 800 to 1,200 meters below surface. These mines run giant load-haul-dump vehicles (LHDs), ore trucks, and support equipment that currently burn diesel, creating heat and ventilation constraints that limit production and increase operational risk in confined spaces. Moving to battery electric equipment, LHDs and trucks, would slash ventilation demand by 80 to 90 percent, reduce heat load, and lower operating cost per ton. But the technical hurdle is brutal: underground mines demand high-density batteries that charge fast, operate reliably in confined spaces without thermal runaway, and function at the power and duty cycles required by equipment working in continuous ore haulage under thousands of meters of rock. CEA-Liten, based in Grenoble, holds more patents on lithium battery chemistry and thermal management than any other European research organization over the past two decades, not because of one breakthrough, but because it has been running the core energy storage R&D for France's entire industrial electrification strategy. The French government's FASEP fund (Fund for Studies and Assistance to the Private Sector) is co-financing the work specifically to embed French battery technology into copper mining specs.
The partnership structure reveals where the real leverage sits. CEA-Liten is not just advising; it is running laboratory simulations and thermal testing on batteries designed and supplied by WattAlps, a French battery manufacturer specializing in high-density systems for industrial applications. The University of Chile's AMTC (Advanced Mining Technology Center) and CASE (Center for Sustainable Acceleration of Electromobility) are contributing operational mining expertise, they understand the actual constraints of deep cave mining better than any European lab. Codelco is funding the program and dictating the technical specifications it needs to meet: powertrain electrification, charging strategies for deep mines where ventilation and thermal load are the binding constraints, and techno-economic analysis of what electrified underground fleet operations actually cost per ton of ore moved. This is a twelve-month design-and-validation program, not a deployment contract. But the outcome, proven battery systems tested under Codelco's actual operating conditions, will become the specification that Codelco's procurement team uses when writing RFQs to Sandvik, Epiroc, and Atlas Copco for the next generation of electric LHDs and trucks.
The competitive implication is sharp: Sandvik and Epiroc, the dominant underground mining equipment makers, are now locked into engineering their future LHD and truck lines to meet battery and charging specifications developed inside a Codelco-CEA-Liten-WattAlps collaboration. Codelco is the largest single buyer of underground mining equipment on Earth. Whoever builds the first production-grade electric LHD that meets these specs wins not just Codelco's orders across its Chilean portfolio, but the template for every other deep copper mine operator globally watching how electrification actually performs at scale. The FASEP mechanism also signals that France is explicitly using government capital to embed its battery R&D infrastructure into mining equipment procurement, meaning future underground mining equipment will carry more French intellectual property and manufacturing input than it did when equipment was simply optimized for diesel efficiency.
Watch three markers over the next six months. First: whether CEA-Liten publishes preliminary thermal and performance data from WattAlps battery testing by Q3 2026, showing viability for the duty cycles Codelco requires. Second: whether Codelco commits to a pilot deployment of prototype electric LHDs in one of its deepest mines by Q4 2026, that commitment would signal the technology is moving from lab to operation. Third: whether Sandvik or Epiroc announces a formal development contract with either Codelco or CEA-Liten to engineer production electric underground equipment based on the specifications emerging from this program. The first two markers test technical feasibility; the third tests whether equipment makers are committing real engineering capital to meet the specs Codelco is writing.