Base Metals Expansion Will Unlock Opportunities In Decarbonization

Key Takeaways

• Portfolio shift toward higher-return metals and efficiency gains position South32 for stronger margins and lower operational risk in a decarbonizing world.
  
• Strategic exploration, mine life extensions, and sustainability focus support future growth, earnings optionality, and premium market valuations.
  
• Exposure to energy, geological, market, regulatory, and project execution risks threatens operational stability, revenue growth, and margin predictability across South32's asset portfolio.

Catalysts

Operates as a diversified metals and mining company.

• Large-scale investment and progress in copper and base metals growth projects (Hermosa, expanded Sierra Gorda capacity) position South32 to benefit from rising demand for metals critical in renewables, electric vehicles, and global decarbonization, supporting revenue and future earnings growth.
  
• Realized portfolio simplification and divestiture of lower margin, higher-risk coal assets refocus South32 on higher-return and future-facing commodities, increasing long-term net margins and improving the company's risk profile in line with energy transition trends.
  
• Ongoing efficiency improvements, lower operating unit costs at key alumina and aluminum operations, and mine life extensions at Worsley, Cannington, and GEMCO-enabled by new reserve additions and process innovations-drive sustainable free cash flow and underpin net margin expansion.
  
• Strategic exploration, first-mover advantages in prospective mining regions, and potential for bolt-on expansion (e.g., Peake/Taylor, GEMCO northern leases, Kalahari copper belt) create future optionality and earnings growth tied to ongoing urbanization and infrastructure demand in global emerging markets.
  
• Commitment to sustainability and ESG progress enhances South32's access to capital, mitigates regulatory risks, and supports premium valuations over time as well-capitalized, ESG-focused metals producers outperform in a tightening industry supply environment-positively impacting earnings multiples and reducing cost of capital.

South32 Future Earnings and Revenue Growth

Assumptions

• Analysts are assuming South32's revenue will grow by 4.5% annually over the next 3 years.
• Analysts assume that profit margins will increase from 5.3% today to 15.6% in 3 years time.
• Analysts expect earnings to reach $1.1 billion (and earnings per share of $0.22) by about September 2028, up from $318.0 million today. However, there is a considerable amount of disagreement amongst the analysts with the most bullish expecting $1.3 billion in earnings, and the most bearish expecting $737.1 million.
• In order for the above numbers to justify the analysts price target, the company would need to trade at a PE ratio of 10.2x on those 2028 earnings, down from 24.3x today. This future PE is lower than the current PE for the GB Metals and Mining industry at 15.5x.
• Analysts expect the number of shares outstanding to decline by 0.47% per year for the next 3 years.
• To value all of this in today's terms, we will use a discount rate of 7.29%, as per the Simply Wall St company report.

South32 Future Earnings Per Share Growth

Risks

• Reliance on securing long-term power contracts for key assets like Mozal Aluminum and Hillside exposes South32 to risks from energy cost inflation and electricity supply disruptions in South Africa and Mozambique, which could significantly impact operational continuity, asset write-downs, and future net margins.
  
• The ongoing maturation and complex geological conditions at Cannington and GEMCO highlight challenges in extending mine life and maintaining production levels; failure to add new reserves or unlock additional resources could lead to declining revenues and higher unit costs over time.
  
• Persistently challenged alumina markets due to chronic oversupply in China, together with structural shifts in global aluminum and alumina flows, may suppress prices and compression of margins in these business lines, resulting in less predictable earnings.
  
• Substantial future capital expenditures required for asset upgrades, environmental compliance, and growth projects (such as Taylor and Sierra Gorda) create execution and cost inflation risks-particularly as only a fraction of project budgets have been spent and global tariffs or supply constraints could drive costs above current estimates, impacting future free cash flow and returns.
  
• The ability to access new mineral-rich land, especially at GEMCO, is heavily dependent on agreements with traditional owners, injecting social and regulatory uncertainty into future production profiles; failure to secure such access could limit resource additions and revenue growth from key assets.

Valuation

• The analysts have a consensus price target of A$3.047 for South32 based on their expectations of its future earnings growth, profit margins and other risk factors. However, there is a degree of disagreement amongst analysts, with the most bullish reporting a price target of A$3.93, and the most bearish reporting a price target of just A$2.59.
  
• In order for you to agree with the analyst's consensus, you'd need to believe that by 2028, revenues will be $6.8 billion, earnings will come to $1.1 billion, and it would be trading on a PE ratio of 10.2x, assuming you use a discount rate of 7.3%.
  
• Given the current share price of A$2.63, the analyst price target of A$3.05 is 13.7% higher.
  
• We always encourage you to reach your own conclusions though. So sense check these analyst numbers against your own assumptions and expectations based on your understanding of the business and what you believe is probable.