Mining growth and transparency demands
Indonesia’s mining industry supplies key commodities such as coal, nickel, and copper, contributing heavily to exports, government revenue, and industrial development. At the same time, mining operations generate environmental risks, social tensions, and regulatory scrutiny.
To address these concerns, regulators now require listed companies to publish sustainability reports. However, disclosure quality varies widely, and investors often struggle to interpret whether sustainability reporting reflects genuine corporate performance or merely formal compliance.
The research team from Universitas Islam Indragiri examined whether higher-quality ESG reporting actually influences how markets value mining companies.
Data-driven analysis of sustainability reporting
The researchers used a quantitative design based on company reports and market indicators. Their analysis covered mining companies listed on the Indonesia Stock Exchange between 2023 and 2025.
The study included:
- 48 companies with complete annual and sustainability reports
- ESG disclosure scores derived from environmental, social, and governance reporting
- Firm value measured using the Price-to-Book Value (PBV) ratio
- Statistical regression analysis to evaluate how ESG disclosure affects market valuation
This approach allowed the authors to examine the relationship between sustainability transparency and investor perception in a measurable way.
Clear statistical evidence linking ESG disclosure to company value
The results show that sustainability reporting quality has a measurable and significant effect on corporate valuation in Indonesia’s mining sector.
Key findings include:
- ESG disclosure explains 37.4% of the variation in firm value, indicating a strong market relationship
- Environmental, social, and governance pillars each positively influence company valuation
- Governance disclosure has the most powerful impact on investor confidence
- Firms with transparent sustainability reporting tend to enjoy stronger market credibility
The authors conclude that sustainability reporting functions as more than a regulatory requirement. Instead, it operates as a strategic communication tool that signals risk management quality and long-term stability to investors.
Governance transparency leads investor confidence
The study finds governance disclosure is the most influential ESG component. In mining industries, strong governance signals regulatory compliance, accountability, and operational discipline. Investors interpret these signals as indicators of lower risk and better long-term performance.
Environmental reporting also contributes to higher firm value by demonstrating responsible resource management and pollution control. Companies that show environmental commitment are perceived as more resilient to regulatory and reputational risks.
Social disclosure, including worker welfare and community engagement, strengthens corporate legitimacy and brand reputation, which in turn supports market value.
As the authors from Universitas Islam Indragiri explain, transparent ESG reporting reduces information gaps between companies and investors and reinforces corporate legitimacy in the capital market.
Implications for business strategy and public policy
The findings highlight the growing importance of sustainability accounting in emerging economies.
For corporate managers, sustainability reporting should be treated as a strategic investment. Transparent ESG communication can improve investor perception, strengthen reputation, and enhance long-term valuation.
For investors, ESG disclosures provide valuable insight into corporate governance quality, risk exposure, and sustainability performance beyond traditional financial metrics.
For policymakers and regulators, the research supports continued development of reporting standards and disclosure rules to improve transparency in Indonesia’s mining sector. Strengthening sustainability reporting frameworks may increase investor confidence in national capital markets and support responsible economic growth.
Author profile
Moh. Rizal Syafiie, is an accounting lecturer at the Faculty of Economics and Business, Universitas Islam Indragiri, Indonesia. His research focuses on sustainability accounting, corporate governance, and financial reporting in emerging markets.
Ira Gustina, Ranti Melasari, and Suryani, are accounting scholars at Universitas Islam Indragiri whose work explores ESG disclosure, corporate transparency, and investor decision-making in developing economies.
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