Nickel products with a purity of 99.8% or greater, including cathode, briquettes, and powder. Class 1 nickel is deliverable against the London Metal Exchange (LME) contract, making it the product that determines the global benchmark price. It can be used in high-grade alloys, electroplating, and — when dissolved and processed — as a feedstock for battery-grade nickel sulphate. Refined nickel from conventional sulphide smelting and refining is Class 1, as is nickel cathode produced by electrowinning from HPAL solutions. The LME price is the standard reference point for nickel contracts across the supply chain, though most Indonesian nickel products (NPI, MHP) trade at discounts to LME on a contained-nickel basis.

Nickel pig iron (NPI) and ferronickel are lower-purity nickel products — typically 10–15% nickel for NPI and 20–40% for ferronickel — produced by smelting laterite ore in blast furnaces or rotary kiln electric furnaces (RKEF). Both products are used almost exclusively in stainless steel production. Indonesia's RKEF buildout has made NPI the world's dominant source of new nickel supply. NPI and ferronickel are Class 2 products: they trade at a discount to LME on a per-tonne-of-contained-nickel basis, and they have no terminal market (unlike Class 1 products, they cannot be delivered to an exchange). For investors, exposure to Class 2 nickel means exposure primarily to stainless steel demand rather than battery demand.

An intermediate nickel-cobalt product, typically containing around 35–45% nickel and 2–5% cobalt by weight, produced by precipitating dissolved metals from the leach solution in an HPAL plant. MHP has become the dominant intermediate product from Indonesian HPAL operations and is prized by battery manufacturers as a feedstock for producing nickel sulphate and cobalt sulphate for NMC cathode. It trades at a discount to LME but the discount has narrowed considerably as battery cathode producers have demonstrated they can process MHP directly. Investors should distinguish between companies producing MHP (battery supply chain exposure) and those producing NPI or ferronickel (stainless steel exposure), as the two products have meaningfully different demand drivers and price dynamics.

The dominant processing route for saprolite laterite ore, used to produce ferronickel and NPI. In an RKEF, ore is first dried and pre-reduced in a rotary kiln, then smelted in an electric arc furnace to separate nickel-bearing metal from slag. The technology is proven, scalable, and relatively fast to commission — characteristics that drove its rapid adoption across Indonesia. However, RKEF is highly energy-intensive, generating significantly more CO₂ per tonne of nickel than HPAL or conventional sulphide processing. As ESG scrutiny of battery supply chains increases and automakers impose carbon standards on cathode inputs, the carbon intensity of RKEF-derived nickel is an emerging commercial risk.

The battery-ready form of nickel — a blue crystalline salt (NiSO₄) used as the direct input for manufacturing NMC and NCA battery cathode precursors (pCAM and CAM). Nickel sulphate is produced by dissolving high-purity nickel feedstocks — Class 1 metal, MHP, MSP, or nickel matte — in sulphuric acid. It requires high-purity inputs, as impurities can degrade battery performance. The expansion of Chinese and Indonesian HPAL capacity producing MHP has substantially increased the available feedstock for nickel sulphate production. For investors, a project's ability to produce or supply battery-grade feedstocks is the key determinant of whether it participates in battery demand growth or remains tied to the stainless steel cycle.

Nickel is a key component of the cathode in the two highest energy-density lithium-ion battery chemistries used in electric vehicles: NMC (nickel-manganese-cobalt) and NCA (nickel-cobalt-aluminium). In these chemistries, nickel is the primary active material — typically 60–80% of the cathode by weight in high-nickel formulations — and higher nickel content translates to greater energy density and longer range. The demand outlook has become more complex than the simple "more EVs = more nickel" equation. The rapid adoption of LFP battery chemistry — which contains no nickel at all — particularly in China, has meaningfully diluted nickel's share of EV battery demand. Long-range premium vehicles continue to favour high-nickel NMC or NCA. The balance between LFP and NMC/NCA adoption is the most important swing factor in long-term nickel demand modelling.

Indonesia's rise from supplying roughly 30% of global nickel a decade ago to approximately 60% today is the defining structural shift in the nickel market. The country's 2020 ban on raw ore exports, combined with Chinese-backed investment in domestic processing, produced an integrated supply chain spanning ore mining, RKEF smelting, HPAL MHP production, and Class 1 refining. Indonesian production costs are low and margins at integrated operations have remained resilient even as LME prices fell to levels at which most Western and Australian producers are loss-making. This created a bifurcated opportunity set: companies with Indonesian exposure (Nickel Industries, Harita Nickel, Nickel Asia) demonstrated relative resilience through the downturn, but carry geopolitical, ESG, and regulatory concentration risks. Western sulphide developers offer strategic optionality for a recovery scenario but face longer timelines and uncertain economics in a prolonged low-price environment.

Nickel occurs in two fundamentally different geological settings. Sulphide deposits form when nickel-bearing magma intrudes and crystallises in the earth's crust; they tend to be higher-grade and can be processed via conventional flotation and smelting to produce nickel concentrate, matte, and ultimately Class 1 metal — a relatively well-established, capital-efficient route with a lower carbon footprint. Laterite deposits are formed by surface weathering of ultramafic rocks in tropical climates; they are typically large, lower-grade, and close to the surface. Limonite laterites are processed via HPAL to produce intermediates like MHP; saprolite laterites are processed via RKEF into ferronickel or NPI. For energy transition investors, sulphide deposits offer a more direct, lower-cost, lower-carbon pathway to battery-grade nickel — but high-quality new sulphide discoveries are scarce.

Class 1 nickel refers to products with a purity of at least 99.8% — primarily cathode, briquettes, and powder — that are deliverable against the LME contract. Class 2 nickel covers lower-purity products, principally NPI and ferronickel, used almost exclusively in stainless steel production. Class 2 products trade at a discount to LME and have no terminal market. HPAL technology has made it possible to produce MHP from laterite ore — an intermediate that can be refined into battery-grade nickel sulphate, bridging the two classes. Meanwhile, Chinese smelters demonstrated that NPI can be converted to nickel matte and onward to nickel sulphate, though this is costly and carbon-intensive. The result is a more interconnected market in which LME pricing increasingly reflects Indonesian Class 2 economics, squeezing the margins of traditional Class 1 Western producers.

BHP suspended its Western Australia Nickel division — comprising the Nickel West operations and the West Musgrave project — in October 2024 in response to sustained global nickel oversupply driven by Indonesian production. BHP took total impairments of approximately US$5.4 billion against Western Australia Nickel and invested roughly A$450 million per year during the suspension to preserve optionality for a potential restart. The company has flagged a formal review of the suspension decision by February 2027, with resumption dependent on a meaningful recovery in nickel prices. For energy transition investors, BHP's nickel narrative has effectively paused; its near-term investment case rests on copper and iron ore.