Century Aluminum Company

source: coverage-next-full ticker: CENX step: "01" title: Business Overview created: 2026-05-29

Step 01 — Business Overview

Company at a Glance

Century Aluminum Company is a Chicago-headquartered primary aluminum producer with a 30+ year operating history. "Primary aluminum" distinguishes the company from secondary/recycled aluminum processors — Century uses the Hall-Héroult electrolytic reduction process to convert alumina (aluminum oxide refined from bauxite) into pure aluminum metal. This process is extraordinarily energy-intensive, making Century's economics inseparable from electricity costs and aluminum prices simultaneously.

The company operates across two geographies — the United States (three smelter sites) and Iceland (one large smelter) — with each facility having distinct power cost structures, product capabilities, and operating economics.

Operating Smelters

Hawesville, Kentucky

• Capacity: ~240,000 metric tons per year (nameplate)
• Product: Standard P1020 ingot and high-purity aluminum (99.7–99.99% purity)
• Power: TVA (Tennessee Valley Authority) grid power — subject to market pricing and PPA renegotiation cycles
• Status: Has experienced repeated curtailments during high-power-cost / low-LME periods (most recently 2022–2023 due to natural gas-driven electricity cost spikes). Partial restart underway as of 2024
• Strategic note: Hawesville is Century's highest-profile US asset and the one most sensitive to power cost inflation. It also produces the high-purity aluminum grades most valued by aerospace and defense customers

Sebree, Kentucky

• Capacity: ~205,000 metric tons per year
• Product: Standard P1020 and value-added slab/billet products
• Power: Contract with Big Rivers Electric Corporation — historically more stable pricing than Hawesville
• Status: Fully operational; Century's most consistently running US smelter

Mt. Holly, South Carolina

• Capacity: ~230,000 metric tons per year (two potlines; one historically idled)
• Product: Standard ingot
• Power: Dominion Energy South Carolina — power cost pressures led to extended partial curtailment
• Status: Operations have been on-again/off-again; subject to restart when LME + Midwest premium economics support it

Grundartangi, Iceland

• Capacity: ~310,000 metric tons per year
• Product: Standard P1020 and specialized alloys
• Power: Long-term agreements with Landsvirkjun (Icelandic National Power Company) — geothermal and hydroelectric baseload at some of the lowest industrial power rates in the world (~$20–30/MWh vs. $60–90/MWh for US smelters)
• Status: Continuously operational; Century's most stable, lowest-cost smelter
• FX note: Costs incurred in ISK and EUR; revenues in USD (LME)

Product Portfolio

High-purity capability at Hawesville is a key differentiator — very few North American smelters can consistently produce 99.9%+ purity aluminum at commercial scale. This capability commands premiums and creates stickier customer relationships in aerospace/defense.

Glencore Relationship

Glencore plc (~43% shareholder as of 2024) sits at the center of Century's commercial structure:

1. Equity anchor: Glencore's stake provides governance stability but limits free float and creates related-party disclosure obligations
2. Offtake agreements: A substantial portion of Century's aluminum production is sold to Glencore under offtake agreements. Pricing is typically LME-based with market-referenced premiums
3. Alumina supply: Glencore may also supply alumina feedstock under separate commercial arrangements
4. Strategic alignment: Glencore's global aluminum trading and marketing capabilities reduce Century's commercial and logistics exposure; Century essentially focuses on low-cost production while Glencore handles global distribution

The Glencore relationship is simultaneously a strength (commercial certainty, powerful partner) and a risk (concentration in related-party transactions, potential conflict of interest in pricing, limited strategic independence).

Manufacturing Economics

The Hall-Héroult process requires approximately 14,000–16,000 kWh of electricity per metric ton of aluminum produced. At a US power cost of $70/MWh, electricity alone costs $1,050/t ($0.48/lb), before alumina, labor, carbon/anode materials, and overhead.

Simplified cash cost structure (per metric ton at ~$2,500/t LME):

• Alumina: ~$650–750/t
• Power: ~$600–900/t (US) / $300–450/t (Iceland)
• Other raw materials (carbon anodes, cryolite): ~$150–200/t
• Labor, maintenance, overhead: ~$300–400/t
• Total cash cost (US): ~$1,700–2,200/t
• Total cash cost (Iceland): ~$1,400–1,800/t

At LME $2,300/t + $150/t Midwest premium, US smelters operate near breakeven to marginal profit. Iceland smelters earn $400–700/t margin. This illustrates why Century's consolidated results are highly sensitive to LME moves of even $50–100/t.

Strategic Positioning

Century is pursuing a "green aluminum" strategy premised on:

1. Expanding low-carbon production capacity (Iceland geothermal as proof of concept)
2. Accessing DOE funding under the Bipartisan Infrastructure Law and Inflation Reduction Act for US smelter decarbonization
3. Capturing growing demand for verified low-carbon aluminum from automotive OEMs and aerospace primes who face Scope 3 emissions pressure

The DOE Bipartisan Infrastructure funding (up to $500M+ in potential grants under the Advanced Industrial Facilities Decarbonization Program) represents an asymmetric catalyst: it would not just reduce capex for modernization but validate Century's positioning as a "critical minerals / domestic manufacturing" champion — a politically durable framing across administrations.

source: coverage-next-full ticker: CENX step: "04" title: Financial Snapshot — 3-Year P&L Summary created: 2026-05-29

Step 04 — Financial Snapshot

3-Year Income Statement Summary

Note: All figures are estimates based on public filings and analyst data. FY2024E reflects mid-cycle LME environment (~$2,200–2,400/t) with partial Hawesville restart.

Key Margin Analysis

FY2022: Peak Cycle

FY2022 was an exceptional year driven by:

• LME aluminum spiked to $3,800/t in March 2022 (Russia/Ukraine disruption to Rusal supply)
• Annual average LME of ~$2,700/t — far above 5-year historical average
• Midwest premium expanded to ~$0.30–0.35/lb ($660–770/t) — historically high
• Revenue of ~$2.35B and EBITDA of ~$450M represented peak cycle performance
• Century repaid debt aggressively from free cash flow
• Even with power cost inflation beginning, spreads were wide enough for strong margins

FY2023: Normalization

FY2023 saw a sharp reversal:

• LME fell to ~$2,100–2,300/t average — down 15–20% from 2022 average
• Midwest premium contracted to ~$0.10–0.15/lb — down from 2022 peaks
• Power costs remained elevated — natural gas-driven electricity prices didn't normalize as quickly as LME/Midwest
• Hawesville partially/fully curtailed — reducing volume, but fixed costs persisted
• EBITDA compressed from ~$450M to ~$120–140M — a 70%+ decline on a ~20% revenue decline, illustrating extreme operating leverage
• Near-breakeven net income; possible small net loss on full-year basis

FY2024E: Stabilization

2024 trends:

• LME stabilizing in the $2,200–2,600/t range
• Midwest premium modest recovery to $0.12–0.18/lb
• Hawesville partial restart (100–120 kt of nameplate being brought back online)
• Power cost pressures moderating (gas prices normalized, new PPA terms)
• EBITDA recovery to $120–160M range — still well below 2022 peaks but business stabilizing
• Focus on capital preservation and DOE grant pursuit

EBITDA Bridge: FY2022 → FY2023

This bridge illustrates why Century is one of the most operationally leveraged commodity equities available to public market investors.

Key Financial Ratios

Depreciation & Amortization

D&A runs approximately $80–90M per year, reflecting:

• Smelter potlining amortization (potlines are replaced every 6–10 years at significant cost; the amortization is substantial)
• Other fixed asset depreciation
• Capitalized restart costs being amortized as smelters are brought back online

Potline capital cycle: Replacing the carbon lining in an aluminum reduction cell ("potline rebuild") costs $50–150M per potline and is the dominant maintenance capital requirement for smelters. Century typically capitalizes these costs and amortizes over the pot life. This creates lumpy capex but relatively stable D&A.

Revenue & Earnings Cyclicality

Century's earnings are among the most volatile in the S&P 400 / Russell 2000 universe:

• EPS swings from +$4.80 (peak cycle) to ($0.50) (trough) are routine
• The stock therefore does not lend itself to traditional P/E valuation
• Appropriate frameworks: EV/EBITDA on mid-cycle EBITDA, price/book, and LME-to-NAV sensitivity analysis

Mid-cycle EBITDA estimate (using $2,300/t LME, $0.15/lb Midwest premium, 600kt volume):

• Approximately $150–200M — this is the normalized earnings base the market should anchor to
• At 5–7x mid-cycle EBITDA, enterprise value would be $750M–$1.4B
• With ~$350–450M net debt, implied equity value $300M–$950M
• With ~63M shares, implied price range ~$5–$15 (wide range given commodity leverage)