Once dismissed as corporate window-dressing, (ESG) Environmental, Social, and Governance principles have evolved into a defining lens through which investors, regulators, and consumers now judge the world’s companies.
In boardrooms across the globe, a quiet transformation has been underway. Companies that once measured success solely by quarterly earnings are now being scrutinised through a far broader lens, one that asks how they treat the planet, their people, and the principles that govern their operations. This framework is ESG: Environmental, Social, and Governance.
What began as a niche concept in socially responsible investing circles has grown into a structural force reshaping capital allocation, corporate strategy, and regulatory policy. Understanding ESG is essential for any business, investor, or citizen trying to make sense of the modern economy.
The Three Pillars of ESG
Environmental
How a company interacts with the natural world including carbon emissions, energy use, water stewardship, waste, biodiversity, and climate risk exposure.
Social
How a company manages relationships with employees, suppliers, communities, and customers covering labour practices, diversity, human rights, and data privacy.
Governance
How a company is led and controlled including board composition, executive compensation, shareholder rights, transparency, audit quality, and anti-corruption measures.
Each pillar is distinct, yet deeply interconnected. A company with strong environmental policies but poor labour practices, for instance, may face reputational backlash that undermines the very sustainability credentials it worked to build. True ESG leadership requires coherence across all three dimensions.
ESG Metrics & Targets
Under Environmental metrics, we have
Greenhouse Gas Emissions which measures the amount of greenhouse gases, such as carbon dioxide and methane, that a company emits into the atmosphere. Companies that emit large amounts face potential regulatory, reputational and financial risks. KPIs on emissions include:
- Scope 1, 2, and 3 emissions
Scope 1 – Direct Emissions: Emissions directly from operations owned or controlled by the company.
Scope 2 – Indirect Emissions (Purchased Energy): Indirect emissions from the generation of purchased electricity, steam, heating, or cooling.
Scope 3 – Indirect Emissions (Value Chain): All other indirect emissions that occur in a company’s value chain, including upstream (before production) and downstream (after product sale) activities. - Emissions intensity per unit of revenue or production.
- Year-over-year emissions increase or reduction percentage.
- Progress toward net-zero emissions targets.
Energy usage measures the amount of energy a company uses to produce goods and services, power its data centers and run other operations. Companies that use renewable energy sources, such as solar or wind, might have a lower environmental impact than those that rely on fossil fuels. KPIs include:
- Total energy consumption measured in megawatt-hours (MWh)
- Percentage of energy derived from renewable sources
- Energy usage per unit of production output
- Year-on-year improvements in energy efficiency
Water usage measures how efficiently and responsibly a company manages its water resources, in terms of consumption, conservation, and impact. KPIs include:
- Total volume of water consumed (in cubic meters)
- Water usage per unit of production output
- Proportion of water that is recycled or reused
- Assessment of water stress risks across operational sites
Waste management includes metrics on waste generation and programs for managing waste. KPIs include:
- Total waste generated, usually measured in tons or metric tons.
- Waste diversion rate from landfills.
- Percentage of waste recycled, reused or composted.
- Volume of hazardous waste produced and its safe, compliant disposal.
Recently Mandatory Scope 3 (indirect value chain emissions) moves from “optional” to a regulatory requirement for thousands of companies under the EU Corporate Sustainability Reporting Directive (CSRD) and California’s SB 253.
Starting January 1, 2026, Carbon Border Adjustment Mechanism (CBAM) becomes fully operational, imposing costs on imports of carbon-intensive goods (steel, cement, aluminum, etc.), forcing companies to report embedded carbon intensity.
Under Social metrics, we have