Manganese: the quiet battery metal — demand is rising but supply logistics are the wildcard

The LMFP revolution: why manganese matters now

The battery industry's shift toward manganese is one of the most consequential — and least discussed — chemistry trends of the past two years. LFP (lithium-iron-phosphate) cathodes dominated the 2023-2025 period by offering lower cost, better safety, and longer cycle life than nickel-rich NMC alternatives. But LFP has a fundamental limitation: lower energy density, which constrains vehicle range and limits its applicability to larger, higher-margin EV segments.

Enter LMFP — lithium-manganese-iron-phosphate. By substituting roughly 15-25% of the iron content in the LFP olivine crystal structure with manganese, cathode makers can increase the cell's operating voltage from ~3.4V (LFP) to ~3.8-4.1V (LMFP), delivering an energy density improvement of 15-20% while preserving LFP's safety and cost advantages. (FACT: CRU Group; BMI) This is not a theoretical chemistry — LMFP is in commercial production at scale from CATL, BYD, Gotion High-Tech, and others, and is being used in both EVs and stationary storage.

The manganese requirement per cell is substantial. Standard LFP contains ~0% manganese. LMFP cathodes contain roughly 15-25% Mn by metal content, with the balance being iron and phosphate. (FACT: Project Blue; Benchmark Mineral Intelligence) Each gigawatt-hour of LMFP cathode production requires approximately 150-200 tonnes of HPMSM — a material that was barely on the commodity radar three years ago and is now one of the fastest-growing battery raw materials by demand growth rate.

The product stack: ore, EMM, and HPMSM

Manganese is not a single market. Understanding the product hierarchy is essential for procurement strategy, because each form serves a different demand pool with different price dynamics and supply constraints.

Manganese ore (44% Mn basis)

The foundational product. Manganese ore is mined primarily in South Africa (~30-40% of global seaborne trade), Gabon, Australia, Brazil, Ghana, and Ukraine (pre-war). (FACT: USGS; IMnI) The benchmark is 44% Mn ore delivered CIF China, priced per dry metric tonne unit (dmtu). The current range of $4.00-5.00/dmtu reflects a balanced ore market — sufficient mine capacity globally, but constrained by the logistical bottleneck of getting ore out of South Africa and to export ports. Ore is consumed primarily by Chinese and Indian silico-manganese and ferromanganese smelters that produce alloy feed for the steel industry.

Electrolytic Manganese Metal (EMM, >99.7%)

EMM is produced by electrolysis of manganese sulfate solution, yielding high-purity metal flakes used in specialty steel (200-series stainless, HSLA), aluminum alloys (where manganese improves corrosion resistance), and small-volume battery applications. China dominates EMM production with ~90% of global capacity, though production has faced environmental and power-cost headwinds in recent years. (FACT: CRU Group; SMM) EMM pricing is roughly $2,500-3,500/t depending on purity and delivery terms. EMM can also be converted to HPMSM, adding a supply-side link between the two products.

High-Purity Manganese Sulfate Monohydrate (HPMSM, >99.9%)

This is the battery-grade product, and the fastest-growing segment of the manganese market. HPMSM is produced by leaching manganese ore or EMM with sulfuric acid and crystallizing high-purity manganese sulfate. The material must meet extremely tight purity specifications (particularly for nickel, cobalt, and heavy metal contaminants) to be suitable for LMFP cathode precursor production. (FACT: Benchmark Mineral Intelligence; Project Blue)

HPMSM currently trades at $4-6/kg, with the premium over ore reflecting the significant processing cost, the purity hurdle, and the concentrated nature of HPMSM refining capacity. Approximately 70-80% of HPMSM refining capacity is located in China, with the remainder in South Africa, Belgium, and a handful of other locations. (FACT: Project Blue) This geographic concentration creates a supply-chain risk that battery manufacturers are only beginning to address — a risk that is driving a wave of ex-China HPMSM project development from Australia to North America to Europe.

The Transnet bottleneck: the world's most fragile supply chain

If there is one single point of failure in the global manganese supply chain, it is South Africa's state-owned rail and port operator, Transnet SOC Ltd. The company's performance is the most important variable in global manganese ore availability — and it has been deteriorating for years.

South Africa is the world's largest manganese exporter, responsible for roughly 30-40% of global seaborne manganese ore trade. (FACT: USGS; IMnI) The ore is mined primarily in the Kalahari Manganese Field in the Northern Cape province and transported by rail to the Port of Ngqura (Coega) and Port Elizabeth on the Eastern Cape coast. In theory, the dedicated Transnet manganese rail corridor has capacity to move roughly 10-12 million tonnes of ore per year to export ports. (FACT: Transnet Annual Report; South32 Investor Briefings)

In practice, Transnet has delivered well below this capacity. Rail volumes in 2025 averaged only 60-70% of nominal capacity, a persistent shortfall driven by a combination of factors: aging and poorly maintained rolling stock (locomotives and wagons), cable theft and infrastructure vandalism, coal traffic competing for the same corridor capacity, and chronic operational inefficiency stemming from underinvestment and management challenges. (FACT: South32 Half-Year Results, January 2026; Transnet annual performance reports; multiple mining company earnings calls)

The consequences are direct and material for the manganese market. When Transnet underperforms, manganese ore backs up at mine sites in the Kalahari. Miners stockpile inland, incurring rising storage costs. Some shift to trucking — a far more expensive alternative that also puts pressure on South Africa's already-congested road network. The supply that does reach port commands a premium, and buyers in China and India — the primary destinations for South African manganese ore — face either higher prices or reduced availability.

The Transnet bottleneck has been a known issue since at least 2021, but structural reform has been slow. The South African government has committed to opening the rail network to third-party operators (a process known as "third-party access" under the National Rail Policy), and Transnet has signed agreements with private operators for specific corridors. (FACT: Reuters; South African government gazette) But implementation has been incremental, and meaningful improvement in manganese corridor throughput is unlikely before 2028 at the earliest. In the meantime, the global manganese market operates with a structural supply ceiling that is well below installed mine capacity.

Balanced market, tightening premium segment

The global manganese market in 2026 can be accurately described as "balanced but with a tightening refined-product premium segment." The ore market has sufficient mine capacity to meet current steel and alloy demand. Chinese silico-manganese and ferromanganese producers are operating at reasonable utilization rates, and ore inventories at Chinese ports — while not excessive — are adequate to cover normal working capital requirements. (FACT: SMM; CRU Group)

The tension is in the HPMSM market. Battery-grade HPMSM demand is growing at an estimated 20-30% per annum from a relatively small base, driven by LMFP cathode adoption in both EVs and stationary storage. (FACT: Benchmark Mineral Intelligence; Project Blue) This growth rate is significantly above the expansion rate of HPMSM refining capacity, which is constrained by the capital intensity of new processing plants, the purity certification hurdle (which can take 12-24 months for a new producer), and the geographic concentration of existing capacity in China.

The result is a market where the high-purity, battery-grade manganese product is structurally tightening even though the broader manganese complex is balanced. This is precisely the dynamic that creates the opportunity for new HPMSM supply investment — and the risk for battery manufacturers who have not secured long-term HPMSM supply agreements.

Battery storage: the demand wildcard that is becoming structural

Stationary battery energy storage (BESS) is often treated as a secondary demand driver for battery metals — an afterthought to the EV narrative. That framing is becoming increasingly outdated, and for manganese specifically, BESS demand may be proportionally more important than it is for lithium or nickel.

Grid-scale and behind-the-meter storage operators are systematically favoring LFP and LMFP chemistries over NMC for several structural reasons: (1) safety — thermal runaway risk is far lower with LFP/LMFP, a critical advantage for systems deployed in urban or industrial settings; (2) cycle life — LFP/LMFP cells can achieve 4,000-10,000 cycles vs. 2,000-4,000 for NMC, making them superior for daily cycling applications; (3) cost — LFP/LMFP battery packs cost ~$50-70/kWh at the pack level vs. $70-100/kWh for NMC, a decisive advantage for large-scale deployments where capital cost is the primary metric. (FACT: BloombergNEF; CRU Group; Wood Mackenzie)

As LMFP displaces standard LFP in storage applications — driven by the same energy density advantages that appeal to EV makers — the manganese intensity of each gigawatt-hour of storage deployment increases. Standard LFP uses no manganese. LMFP uses 15-25% Mn in the cathode. For every 100 GWh of annual BESS deployments that shift from LFP to LMFP, additional HPMSM demand of roughly 15,000-20,000 tonnes is created. (FACT: Author calculations based on Project Blue cathode composition data)

The BESS sector is forecast by BloombergNEF to deploy roughly 300-400 GWh annually by 2030, up from approximately 100-150 GWh in 2026. If even 30-40% of new BESS deployments adopt LMFP chemistry, the additional manganese demand from storage alone could reach 50,000-100,000 tonnes of HPMSM per year by 2030. (FACT: BloombergNEF; Project Blue estimates) That is a material demand layer — one that the current HPMSM supply base is not fully equipped to serve.

Supply-side dynamics: who is positioned to fill the gap?

The HPMSM supply response to growing battery demand is taking shape, but it faces the classic critical-minerals dilemma: the investment cycle is long, the certification hurdle is high, and the demand certainty that would justify large-scale capital deployment is still incomplete.

Existing HPMSM producers

China's established HPMSM producers — led by companies such as Hunan Huayuan Manganese Industry, Guizhou Dalong Huicheng, and others in the Hunan-Guizhou production cluster — are expanding capacity, but face environmental compliance costs, power supply constraints, and increasingly stringent purity requirements from battery customers. (FACT: SMM; Project Blue) Their expansion is real but incremental rather than transformative.

Ex-China HPMSM projects

A wave of ex-China HPMSM projects is in various stages of development, driven by battery supply chain diversification demands from Western OEMs and storage operators. Noteworthy projects include:

• South32 — Australia: The major manganese producer has announced plans to assess HPMSM production at its Australian operations, leveraging feedstock from its Groote Eylandt mine in the Northern Territory. (FACT: South32 investor materials)
• Euro Manganese — Czech Republic (Chvaletice): A recycling project targeting HPMSM production from legacy mine tailings. The project has received EU strategic investment support but remains in development stages. (FACT: Euro Manganese corporate filings)
• Element 25 — Australia (Butcherbird): Producing high-purity manganese concentrates and progressing toward HPMSM production. Has offtake agreements with battery material buyers. (FACT: Element 25 Annual Report)
• Various North American projects: Multiple junior mining companies are advancing manganese projects in Canada, the US, and Mexico with HPMSM offtake targets. None have reached commercial production at scale. (FACT: Project Blue; CRU Group)

The collective timeline for meaningful ex-China HPMSM capacity is 2028-2030. Through 2028, the HPMSM supply chain will remain heavily dependent on Chinese refining capacity and South African ore feed — a concentration that carries both logistical (Transnet) and geopolitical risk.

Price outlook: gradual HPMSM premium expansion

The price trajectory for manganese is best understood as a widening premium for battery-grade products within a stable ore price environment.

Manganese ore (44% CIF China): $4.00-5.00/dmtu through mid-2026, with periodic spikes triggered by Transnet disruptions or temporary demand surges from Chinese alloy producers. The ore market has ample mine capacity; the constraint is logistics, not geology. Unless Transnet's performance deteriorates further or a major mine faces operational disruption, ore prices are range-bound. (FACT: CRU Group; SMM)

Silico-manganese and Ferromanganese alloys: Alloy prices follow ore costs plus energy premiums. Chinese SiMn (65% Mn) is trading at roughly $1,200-1,500/t, reflecting the ore cost base plus conversion margins. Indian SiMn trades at a small discount to Chinese material. (FACT: SMM; Fastmarkets)

HPMSM (battery grade): The most dynamic segment. Current pricing of $4-6/kg reflects a growing demand base and a constrained supply pipeline. As LMFP adoption accelerates through 2027-2028, and as battery storage adds a parallel demand stream, HPMSM prices are likely to trend toward the upper end of the range and potentially exceed it. The key upside risk: if multiple large-scale HPMSM offtake contracts are signed by major battery manufacturers in the next 12-18 months, the market could tighten significantly faster than supply can respond. (FACT: Benchmark Mineral Intelligence; Project Blue)

What this means for buyers

The manganese procurement landscape is shifting from a low-attention, steel-centric commodity toward a dual-market structure: a mature, balanced ore market and a tightening, growth-driven HPMSM market. Buyers need different strategies for each.

Ore and alloy buyers (steel, stainless, specialty metals)

You operate in a balanced market where the primary risk is logistical, not fundamentals-driven. The ore price is range-bound but can spike sharply if Transnet rail performance deteriorates. Key actions:

• Diversify ore supply sources. Reduce dependence on South African-origin ore by developing relationships with Gabonese (Eramet), Australian (South32 Groote Eylandt), and Brazilian producers. Gabon's Comilog rail system is more reliable than Transnet's and provides a useful alternative.
• Include Transnet performance clauses in South African supply contracts. Structure pricing that adjusts if rail throughput falls below a defined threshold. This shifts some logistical risk back to the supplier.
• Hold higher buffer inventory levels. If you rely on South African ore, maintain 4-6 weeks of additional inventory to absorb Transnet disruption events. The cost of carrying inventory is lower than the cost of a forced production curtailment.
• Monitor monthly Transnet data. Rail and port throughput figures are published with a lag but are the single best leading indicator of manganese ore availability. A sustained decline in throughput below 60% of capacity is a buy signal for spot ore.

HPMSM buyers (EV battery makers and cathode producers)

You are in a structurally tightening market with significant upside price risk and supply concentration concerns. The HPMSM market in 2026-2028 will look like the lithium market in 2021-2022 — accelerating demand, constrained supply, and rising prices. Key actions:

• Lock 2-3 year HPMSM offtake agreements now. The window for contracting at current $4-6/kg pricing is narrowing. As LMFP adoption scales and BESS demand adds a second demand layer, HPMSM suppliers will have pricing leverage for the first time. Secure volume commitments before the market tightens.
• Qualify multiple HPMSM suppliers. The certification process for battery-grade HPMSM takes 12-24 months from sampling to consistent supply approval. Start qualification with alternative suppliers now — even if you do not need their volume yet — to create optionality.
• Consider non-Chinese HPMSM supply at a premium. Ex-China HPMSM projects will cost more than Chinese material (higher capex, smaller scale, no established industrial ecosystem). But the supply diversification benefit is real, and battery OEMs facing regulatory pressure to localize supply chains may find the premium acceptable.
• Monitor the South Africa logistics situation continuously. An improvement in Transnet throughput relaxes the ore supply constraint and enables more HPMSM production. A further deterioration — or a mine shutdown in South Africa due to logistical exhaustion — would be a material supply shock for the entire HPMSM chain.

Multi-commodity procurement teams with exposure across the battery chain

• Add manganese to your regular critical minerals monitoring. It is no longer a "steel alloy" commodity — HPMSM is a distinct, battery-grade product with different supply dynamics and price drivers.
• Understand the LMFP adoption timeline from your cathode and cell suppliers. LMFP penetration is the single most important variable for HPMSM demand forecasting. Ask your battery suppliers directly: what percentage of your cathode production will be LMFP in 2027 and 2028?
• Watch the BESS sector separately from EVs. Stationary storage demand for LMFP may grow faster than EV demand in the 2027-2029 period, and it operates on a different demand cycle (project-based, lumpy, policy-driven).
• Evaluate HPMSM pricing risk in your battery pack cost models. At $4-6/kg HPMSM, the manganese cost per kWh of LMFP battery pack is roughly $0.80-1.20/kWh — a small fraction of total pack cost. Even a 50% price increase to $9/kg adds only $0.60/kWh. HPMSM is a cost-insensitive input for battery makers, meaning demand is relatively price-inelastic and suppliers have room to raise prices without triggering demand destruction.