Thought Leadership

14 Aug 2026

From Sustainability to ESG: How the Concept Evolved Over Time

The Circular Net6 min read
From Sustainability to ESG: How the Concept Evolved Over Time

Sustainability and ESG are often discussed as modern business concepts, but their roots go back much further than today's reporting standards and investor frameworks. The ideas behind them developed gradually through environmental policy, economic development debates, corporate responsibility, investment practice and financial reporting.

Understanding that history is important because it shows why ESG did not appear out of nowhere. ESG grew from decades of concern about how economic growth, social wellbeing, environmental protection and business accountability fit together.

Before ESG: The Rise of Sustainability Thinking

The idea of sustainability began with a basic recognition: that human progress depends on the natural and social systems that support life and economic activity. Over time, this recognition moved from environmental conservation into a broader discussion about development, poverty, resource use, equity and the future.

By the late twentieth century, the world was increasingly confronting environmental degradation, resource pressure, pollution and development inequality. These issues pushed governments and international institutions to think more seriously about how economic development could continue without undermining the systems that make development possible.

The 1987 Brundtland Report

A major milestone came in 1987, when the World Commission on Environment and Development published Our Common Future, widely known as the Brundtland Report. The report defined sustainable development as development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

This definition became influential because it connected environmental protection with human development. It did not present economic growth and environmental responsibility as separate conversations. Instead, it argued that long-term development must consider people, prosperity and the planet together.

The 1992 Rio Earth Summit

Five years later, the 1992 United Nations Conference on Environment and Development, commonly called the Rio Earth Summit, helped place sustainable development at the centre of international policy. Governments recognised the need to address environmental protection, economic development and social wellbeing together.

The Rio Earth Summit helped move sustainability from an emerging idea into a global policy agenda. It also influenced later conversations about corporate responsibility, environmental management, climate policy and sustainable development goals.

From Sustainability Policy to Business Responsibility

As sustainability thinking developed, businesses came under increasing pressure to consider their impacts on society and the environment. Corporate social responsibility became one of the ways companies responded, often through philanthropy, community investment, employee programmes, environmental initiatives and voluntary reporting.

However, as markets changed, sustainability issues began to look less like peripheral corporate responsibility matters and more like real issues affecting business scenarios. Environmental exposure, labour practices, governance failures, community relationships and regulatory changes could affect financial performance, reputation and long-term value.

2004: Who Cares Wins and the Rise of ESG

The modern use of ESG gained prominence through the 2004 Who Cares Wins initiative. The report brought financial institutions together to examine how environmental, social and governance issues could be integrated into financial analysis, asset management and securities brokerage.

This was a turning point. ESG reframed sustainability-related concerns as factors that could be relevant to investment decisions, risk assessment and long-term business performance. It helped move the conversation from values alone to value, risk and accountability.

2006: Principles for Responsible Investment

In 2006, the launch of the Principles for Responsible Investment further embedded ESG thinking in investment practice. The PRI encouraged investors to incorporate ESG issues into investment analysis, ownership practices and decision-making.

This development helped ESG become part of mainstream finance. It suggested that environmental, social and governance factors were not merely ethical preferences, but could be relevant to how investors understand risk, opportunity and long-term returns.

The Shift Toward Sustainability Reporting Standards

As ESG gained attention, the demand for reliable, comparable and decision-useful sustainability information increased. Companies, investors and regulators needed more than broad claims; they needed structured disclosures about sustainability-related risks and opportunities.

The creation of the International Sustainability Standards Board (ISSB) and the release of IFRS S1 and IFRS S2 marked an important stage in this development. IFRS S1 focuses on sustainability-related risks and opportunities that could reasonably be expected to affect an entity's prospects, while IFRS S2 focuses specifically on climate-related disclosures.

This shift shows how sustainability moved from broad policy language into financial and corporate reporting systems. ESG became a bridge between long-term sustainability concerns and the information needs of markets, investors and other users of corporate reports.

Nigeria and the Local Development of ESG Reporting

Nigeria's sustainability reporting journey reflects this global shift. The Financial Reporting Council of Nigeria has issued an amended roadmap and Sustainability Reporting Guideline 1 to support adoption of IFRS Sustainability Disclosure Standards in Nigeria.

This means ESG is no longer only a global investment concept for Nigerian businesses. It is becoming part of the country's corporate reporting landscape, with growing expectations around readiness, governance, disclosure quality and implementation.

Conclusion

The history of sustainability and ESG is a story of evolution in thinking. Sustainability began as a broad idea about meeting present needs without undermining the future. Over time, it became a global policy agenda, a corporate responsibility issue, an investment consideration and now a core part of emerging reporting systems.

ESG sits within that history as a practical framework for understanding how environmental, social and governance factors affect organisations and markets. Its development shows that sustainability is no longer separate from business. It is increasingly part of how organisations are assessed, financed, governed and expected to create value over time.

A Brief History of Sustainable Management

References

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