
The Benchmark Sustainability Index is a composite index that benchmarks lithium companies based on their degree of ESG transparency and performance. All lithium companies have been included in this Index and scored on 87 indicators highlighting the most pressing topics of concern. Separate Environment, Social and Governance scores are calculated, along with an overarching composite ESG score, for each company in the upstream lithium supply chain. Companies are classified into four categories based on their performance: "Industry Leading", "Good Practice", "Moderate Visibility" and "Limited Visibility".