Nickel prices on the London Metal Exchange (LME) have climbed to their highest level in three weeks. This surge follows softer-than-expected US inflation data that has cooled aggressive Federal Reserve rate hike bets, combined with supply uncertainty from top producer Indonesia and burgeoning demand linked to AI data center infrastructure.

The most potent upward force for LME nickel prices is the significant uncertainty surrounding mining policies in Indonesia, the world's largest nickel producer, casting a shadow over future supply. After US producer prices, released on Wednesday, unexpectedly softened—prompting traders to reduce wagers on Fed monetary tightening—the battery metal's price jumped as much as 2.8%, leading gains on the LME. Higher interest rate expectations typically increase borrowing costs for manufacturers and slow procurement, thereby weakening demand for metals.

Data from the US Bureau of Labor Statistics showed the core Producer Price Index for June, excluding food and energy, rose 4.7% year-on-year, significantly below economists' consensus forecasts. The overall PPI, which includes food and energy, unexpectedly fell 0.3% month-on-month, marking its first decline since last August and well below the expected flat reading. Year-on-year, the overall PPI increase narrowed sharply to 5.5%, substantially lower than the consensus forecast of around 6.2%.

Following the surprisingly soft Consumer Price Index data released on Tuesday, the PPI figures further confirmed a sustained cooling of inflation, primarily driven by falling energy prices. Traders subsequently scaled back expectations for a Fed rate hike in July, with the market's main expectation for the next hike now pushed back to December.

Investors are also actively assessing the outlook for nickel mining quotas in Indonesia, which accounts for over 60% of global nickel supply. Mining companies were originally set to apply for increased production quotas at the beginning of this month, but the government has yet to provide any clear guidance. In a surprising move in May, the Southeast Asian nation proposed an aggressive plan to centralize shipping operations for key commodities like palm oil, coal, and ferroalloys through a state-controlled entity to be managed by the sovereign wealth fund.

As of 12:53 p.m. Singapore time, nickel prices on the LME were up 2.4% at $17,210 per tonne, reaching their highest level since June 24. Aluminum rose 0.6%, copper gained 0.5%, and lead increased 0.6% after three consecutive days of declines. People familiar with the matter revealed that Trafigura Group delivered a record volume of lead to LME warehouses for a second time on Wednesday, a key factor behind the metal's recent weakness.

Key Drivers of Nickel's Rally

The combined signals from June's CPI and PPI point to moderating inflation and reduced urgency for near-term rate hikes, providing a supportive macro backdrop. Comments from New York Fed President John Williams, the Fed's third-in-command, acknowledged that inflation remains "unquestionably too high" at around 4%. However, he judged that price pressures from tariffs, housing inflation, energy costs, and supply-demand gaps from AI investment may gradually ease, expecting overall inflation to fall to about 3.25% by year-end and return to 2% by 2028.

Financial giant Citigroup now forecasts that, with inflation continuing to cool, the Fed will not pivot to a hiking stance. The bank projects rate cuts of 25 basis points each in October and December 2026, with a third cut in January 2027, revising its earlier forecast for consecutive cuts in September, October, and December 2026.

For industrial metals like nickel, which have high inventory financing costs, strong sensitivity to the US dollar, and previously concentrated short positions, a reduction in interest rate tail risks means lower holding costs, diminished dollar pressure, and improved forward discount rates. Consequently, the price reaction often outweighs immediate changes in physical demand. In other words, this rally is primarily a valuation recovery and short-squeeze driven by a lower macro discount rate, not a simple reflection of a strong upturn in global manufacturing demand.

Indonesia's Supply Dominance

What truly gives nickel its high price elasticity is Indonesia's transformation of the global nickel market from a traditional commodity cycle to something resembling a "single-policy supply curve." Indonesia currently contributes over 60% of global nickel supply. Its Work Plan and Budget quota for mining in 2026 is approximately 250-270 million wet tonnes, significantly lower than the approved volume of about 379 million wet tonnes for 2025. Meanwhile, local smelters' annual ore demand is projected at 340-350 million wet tonnes.

The market had anticipated a potential broad quota increase in July. However, the Indonesian government's delay in providing a clear plan, with signs it may not implement a comprehensive relaxation, has led traders to reassess the probability of ore shortages, smelter production cuts, and rising marginal costs. It is important to note that quotas are measured in wet tonnes, and factors like moisture content differences, inventory releases, imports from the Philippines, and subsequent additional approvals could reduce the nominal scale of any production cut. Therefore, the current price increase is essentially a significant rise in the premium for Indonesian policy uncertainty, not a confirmed absolute supply shortage backed by inventory data.

AI Data Center Demand Narrative

AI data center construction provides a medium-to-long-term demand narrative but is not the direct engine of this nickel price surge. The International Energy Agency estimates global electricity generation for powering data centers will increase from about 460 terawatt-hours in 2024 to over 1,000 TWh by 2030. This will boost capital expenditure on power transmission and distribution, backup power, Uninterruptible Power Supplies (UPS), battery energy storage systems (BESS), cooling systems, and corrosion-resistant stainless steel equipment. Nickel can benefit indirectly through high-nickel battery cathodes, stainless steel, and some energy infrastructure.

The direct link between AI data centers and nickel demand lies primarily in battery cathode materials. Data center UPS provides seamless short-term backup power during outages, while BESS handles longer-term backup, buffers AI load fluctuations, performs peak shaving, and aids grid regulation. When these systems use nickel-based lithium batteries like NMC or NCA, nickel in the cathode increases energy density, reduces the battery footprint, and extends runtime in the same space.

However, approximately 70% of current nickel demand still comes from stainless steel, with batteries accounting for only about 10%. The most direct and intensive metal demand from AI data centers currently falls on copper, aluminum, indium, gallium, and rare earths, rather than nickel. Therefore, Indonesian government quota discipline and the Federal Reserve's interest rate path remain the core factors traders view as central to nickel's medium-term pricing.