Nickel in 2026: the surplus is not what it looks like

The nickel market in May 2026 presents a paradox. On one side, LME nickel inventories sit at roughly 250,000 tonnes — the highest since 2022. On the other, nickel prices have surged 12.7% in the past month to $18,892/t, Macquarie has raised its 2026 forecast by 18%, and the International Nickel Study Group (INSG) projects the market flipping from a 283,000-tonne surplus in 2025 to a 32,000-tonne deficit in 2026. (FACT: LME, INSG April 2026 press release, Macquarie via Mining.com)

The resolution to this apparent contradiction is the single most important structural fact about nickel in 2026: the nickel market is not one market. It is two. And the surplus in one half does nothing to relieve the tightening in the other.

The Class 1 / Class 2 divide that changes everything

LME nickel inventories represent only Class 1 refined nickel — briquettes, cathodes, pellets, and powder with a minimum purity of 99.8%. But roughly 80% of global nickel production, mainly nickel pig iron (NPI) and mixed hydroxide precipitate (MHP), is not LME-deliverable. (FACT: Crux Investor, April 2026) The 250,000 tonnes sitting in LME warehouses is a stockpile of a specific, high-purity product that accounts for a shrinking share of total nickel supply — and that the market has historically used for applications that are themselves a shrinking share of nickel demand.

Meanwhile, the nickel units that actually matter for the two dominant demand segments — stainless steel (roughly 70% of nickel consumption) and EV batteries (roughly 15-20%) — are overwhelmingly Class 2 materials: NPI, ferronickel, and MHP. And Class 2 supply is tightening fast because it depends almost entirely on Indonesian ore, and Indonesia just slashed its ore mining quota.

The LME price remains the benchmark for contract indexation, but it is increasingly a poor proxy for the physical availability of the nickel that most buyers actually need. A buyer using LME-linked stainless steel contracts is effectively pricing their inputs off a market that represents a shrinking slice of total supply — while the real tightening is happening in the ore-to-NPI pipeline that LME does not track.

Structural theme 1: Indonesia's quota pivot — from growth to control

For a decade, the narrative around nickel supply was simple: Indonesia would grow supply endlessly, driven by its ban on raw ore exports (2020) and its massive buildout of downstream processing capacity. That narrative broke in 2026.

Indonesia's 2026 RKAB (Mining Work Plan and Budget) quota is reported at 250-260 million tonnes, down from 379 million tonnes approved in 2025 — a 28.8-31.4% cut. (FACT: Argus Media, March 2026) More dramatically, Weda Bay — the world's largest nickel mining and processing complex — had its individual quota slashed from 42 million tonnes to just 12 million tonnes, a 71.4% cut that forced the operation onto care and maintenance. (FACT: Mining.com, Crux Investor, April 2026) Weda Bay's NPI curtailments alone amount to roughly 50,000 tonnes per year of nickel contained in NPI, or about 10-15% of its capacity.

This is not a bureaucratic bottleneck. It is a deliberate policy pivot. Indonesia has spent the last five years building downstream processing capacity worth tens of billions of dollars — HPAL plants for battery-grade MHP and RKEF furnaces for NPI. The government's calculus has shifted: maximising the value of its nickel resources now means supporting higher prices, not higher volumes. A quota that keeps ore supply tight supports NPI and MHP prices, which supports the profitability of the downstream plants that Indonesia has invested in, which generates more tax revenue and keeps the political coalition behind industrialisation intact.

The INSG itself flagged that the 2026 RKAB is "significantly lower" than 2025 but remains open to upward revision, with permit holders eligible for one amendment request each. (FACT: INSG, April 2026 press release) This means the quota cut is not necessarily permanent — but it is a deliberate policy tool, not an accident. The Indonesian government can tighten or loosen supply at will, and in 2026 it has chosen tighten.

For a buyer, the implication is structural: Indonesian ore availability is now the binding constraint for the entire Class 2 nickel supply chain. Every metric — NPI output, MHP availability, stainless steel feedstock — flows from Indonesian ore quotas. The era of "more Indonesian supply as the baseline" is over. The new baseline is "Indonesian supply within a policy-determined ceiling."

Structural theme 2: The battery metal premium that never arrived

The EV revolution was supposed to create a structural premium for nickel used in batteries — a "green nickel" premium of $5,000-10,000/t over LME that would reward producers of MHP and nickel sulfate. This premium never materialized. Instead, exactly the opposite happened.

The reason is Indonesia's HPAL (High-Pressure Acid Leach) buildout. Indonesia has commissioned the world's largest fleet of HPAL plants — including projects by Huayou, Tsingshan, and BASF-Eramet — that produce battery-grade MHP at costs estimated below $10,000-12,000/t of contained nickel. (FACT: Multiple industry analyses) This flood of low-cost MHP has kept nickel sulfate prices anchored to LME, trading at a modest premium of $500-1,500/t rather than the $5,000-10,000/t that bulls forecast.

The battery metal premium thesis assumed that Class 1 nickel was the marginal source of supply for sulfate conversion. It was wrong. Indonesia's HPAL plants bypassed Class 1 entirely, producing MHP that feeds directly into sulfate production at a fraction of the cost. The marginal cost of battery-grade nickel is now set by Indonesian HPAL, not by LME refined nickel — and that marginal cost is structurally lower than the old paradigm assumed.

For EV battery procurement teams, this is good news: nickel will not be the bottleneck for battery cost reduction. But it also means the "battery demand will absorb surplus" narrative has failed. Battery-grade nickel is plentiful precisely because Indonesia built the capacity before the demand arrived.

Structural theme 3: The Philippines emerges as the swing supplier

With Indonesian ore supply constrained, the market has scrambled to find alternative sources of Class 2 feedstock. The Philippines has stepped into the gap.

Philippine nickel ore exports jumped 40.8% year-on-year in value terms, reaching $1.47 billion. (FACT: Philippine government trade data, May 2026) This is the single largest percentage increase of any Philippine mineral export and reflects the scramble among Chinese NPI producers and Japanese ferronickel smelters to replace lost Indonesian ore volumes.

But the Philippines is not a perfect substitute. Philippine ore grades are generally lower — typically 1.0-1.5% nickel content versus Indonesia's 1.5-1.8% — which means more ore is needed per tonne of NPI output, increasing logistics, energy, and processing costs. The rainy season also limits Philippine mining operations from November to April, creating a seasonal supply constraint that aligns poorly with the calendar of Indonesian quota decisions.

The Philippines is the marginal swing supplier for Class 2 nickel in 2026, but its capacity to fill the gap is limited. At a 40% export growth rate, the Philippines adds perhaps 30,000-50,000 tonnes of contained nickel equivalent — meaningful but insufficient to replace the 60-70 million tonne ore gap from Indonesia's quota cuts, which translates into roughly 150,000-200,000 tonnes of contained nickel.

Structural theme 4: Macquarie's flip from surplus to deficit

The most important institutional revision in 2026 is Macquarie's decision to flip its nickel market balance from a ~90,000 tonne surplus to a deficit, while raising its 2026 LME nickel price forecast by 18% to $17,750/t. (FACT: Macquarie Research via Mining.com, April 2026)

This revision matters because Macquarie's surplus forecast was the consensus anchor around which many procurement budgets were built. When the most bullish surplus house flips to deficit, the consensus has shifted. The key driver: Indonesian ore supply constraints. The surplus the entire market was watching was the wrong surplus.

Five years ago, the nickel market was recovering from COVID-era disruptions with prices around $17,000-18,000/t and a narrative of underinvestment in Western Class 1 capacity. The structural shift since then has been radical: the market that was supposed to be supply-constrained in Class 1 is now awash, while the market supposed to be awash in Class 2 is tightening rapidly.

Quantified cost impact