LGES preliminary supply pact with Posco Future M: 720,000 tons

By Grace Kim

720,000 tons over seven years is the size of the preliminary battery-materials supply agreement between Posco Future M and LG Energy Solution (LGES), according to local reports.

Posco Future M is the specialty chemicals unit of South Korea’s Posco Group. Under the arrangement, the Posco company would supply cathodes and anodes to LGES, a South Korean battery maker, once a definitive agreement takes effect. That puts Posco Future M in the upstream materials tier and LGES in the cell-manufacturing tier.

Neither company identified a production plant, vehicle program or automaker tied to the volume. The commitment therefore cannot yet be assigned to a specific factory or model launch.

What does the agreement cover?

The companies expect to sign a final agreement by year-end after completing legal formalities. They expect deliveries to start in 2027. The supply slate broadens a relationship that had centered mainly on nickel-cobalt-manganese (NCM) cathode materials.

• Posco Future M would supply lithium iron phosphate (LFP) cathodes, or lithium iron phosphate positive-electrode material, for the first time.
• It would also provide synthetic graphite anodes, a carbon-based negative-electrode material, for the first time.
• Ultra-high-nickel cathodes, or nickel-rich positive-electrode material, would join the supply range.
• The companies agreed to strengthen collaboration on next-generation sodium-ion batteries, which use sodium ions rather than lithium, and silicon anodes, which use silicon as negative-electrode material.

Those additions carry different roles. LFP and synthetic graphite enter the supply arrangement as new categories, while ultra-high-nickel adds another cathode chemistry. The sodium-ion and silicon-anode work is a separate development commitment; the agreement gives no commercial volume, launch date or production-site details for either technology.

Why LGES is expanding the supply mix

The stated rationale is to help LGES respond to demand for lower-cost electric-vehicle batteries, rising demand for energy storage systems (ESS, meaning stationary battery storage), and changing global trade regulations.

The agreement does not quantify how much of the 720,000 tons belongs to each material or end use. It also does not state whether those demands have changed the annual delivery schedule.

That distinction matters. A seven-year total can mask near-term supply constraints. The agreement provides no annual volume breakdown, plant capacity figure, capital commitment or delivery-site allocation.

Neither side identified any LGES vehicle customer or energy-storage project linked to the supply. The 720,000-ton figure therefore represents an announced supply commitment over the contract term, not evidence that the materials are already in production at that rate. Current output at that rate is not established.

What does this change for LGES?

It gives LGES a broader set of planned inputs from an existing cathode supplier. For Posco Future M, the pact would extend its role beyond the main NCM cathode relationship into LFP, synthetic graphite and ultra-high-nickel cathodes. The practical change is supplier coverage across more battery chemistries, not a confirmed jump in installed capacity.

For LGES purchasing teams, the key issue is whether the final contract turns the preliminary volume into scheduled, site-specific supply. Neither side disclosed pricing, minimum-purchase obligations, quality commitments or allocation among LGES facilities.

For Posco Future M, production planning needs the same missing details: which plants make the materials, how much capacity each chemistry needs and whether the 2027 start applies across the full slate or in stages.

What to watch next

The first checkpoint is the definitive agreement targeted by year-end. The second is the first 2027 delivery, including which LGES sites receive LFP, synthetic graphite and ultra-high-nickel material. Shipment data will then show whether the seven-year contract tracks toward 720,000 tons rather than remaining a headline commitment.

The sodium-ion and silicon-anode collaboration needs separate milestones: sample or pilot production, customer validation and a commercial production date. Neither technology carries such dates in the preliminary agreement. Trade-rule changes also remain an external variable because the companies cited evolving global regulations as one reason for broadening supply.

Until the final pact and plant-level schedules arrive, the defensible conclusion is narrow: Posco Future M has secured a preliminary seven-year role in LGES’s materials supply, with meaningful volume attached but no new capacity, investment or production site yet confirmed. The next proof points are the year-end contract and the first 2027 shipments.