ESG stands for Environmental, Social, and Governance, a framework used to evaluate how a company manages risks and responsibilities beyond its financial performance. Investors, customers, and regulators use ESG criteria to assess whether a business operates sustainably, treats people fairly, and maintains ethical leadership. The framework has become a standard lens for evaluating corporate behavior, shaping everything from investment fund strategies to supply chain requirements.
The Three Pillars of ESG
Each letter in ESG represents a broad category of corporate behavior, and each category breaks down into dozens of specific factors that analysts and rating agencies evaluate.
Environmental
The environmental pillar covers a company’s impact on the natural world and how well it manages climate-related risks. This includes direct greenhouse gas emissions from its own operations, indirect emissions from its supply chain and energy use, stewardship of natural resources like water and land, waste management, and resilience against physical climate risks such as flooding, wildfires, and extreme weather. A manufacturing company, for instance, would be evaluated on how much carbon it emits, whether it uses renewable energy, and how it handles industrial waste.
Social
The social pillar examines how a company treats the people it affects: employees, customers, suppliers, and surrounding communities. This covers labor practices, workplace safety, diversity and inclusion, data privacy, product safety, and community engagement. One distinguishing feature of ESG is that social expectations extend beyond a company’s own walls. Analysts look at whether a company holds its supply chain partners to similar standards, particularly suppliers in regions where labor and environmental protections may be weaker.
Governance
Governance focuses on how a company is led and whether its leadership operates with transparency and accountability. Key factors include board composition and independence, executive compensation structures, shareholder rights, anti-corruption policies, and internal controls. Analysts want to know whether leadership incentives are aligned with long-term stakeholder interests rather than short-term financial gains.
Real-World Examples
ESG can sound abstract until you see what it looks like in practice. Here are specific examples across each pillar.
Environmental: Patagonia
Since 1985, Patagonia has pledged one percent of its sales to preserving and restoring the natural environment. The company uses recycled materials and reduces its reliance on carbon-intensive fuels to cut greenhouse gas emissions. In a move that made global headlines, founder Yvon Chouinard transferred ownership of the company to a specially created trust and nonprofit dedicated to addressing the environmental crisis, declaring Earth as Patagonia’s “only shareholder.” All profits now flow to environmental causes.
Environmental: New Belgium Brewing
New Belgium Brewing made its flagship Fat Tire Ale the first certified carbon-neutral beer in the United States in 2020. To get there, the company installed solar panels on its brewery buildings, captured biogas from its water treatment plant to generate electricity, and switched from bottles to cans to lower its carbon footprint. The brewery also created a limited-edition “Torched Earth Ale” to illustrate what beer ingredients might taste like in a climate-damaged future, using it as an awareness campaign.
Environmental: Google
Google has set a goal of achieving net-zero emissions across all its operations and value chain by 2030. Its initiatives include implementing fuel-efficient routing in Google Maps, building a Flood Hub platform that provides real-time flood warning information, and developing contrail forecast maps that help pilots choose routes that avoid creating vapor trails (which contribute to warming). The company also aims to replenish 120 percent of the water it consumes and transition to a circular economy model that maximizes reuse of materials.
Social Examples
Social initiatives vary widely by industry. A tech company might focus on data privacy protections and workforce diversity programs. A retailer might audit its overseas factories for child labor or unsafe working conditions. A pharmaceutical company might be evaluated on drug pricing practices and equitable access to medications. The common thread is how a company’s operations affect human well-being, both for the people inside the organization and those touched by its products and supply chain.
Governance Examples
Strong governance shows up in specifics: a board with independent directors who aren’t personally tied to the CEO, executive pay packages that reward long-term performance rather than quarterly stock bumps, transparent financial reporting, and clear whistleblower protections. Poor governance, by contrast, might look like a board stacked with insiders, minimal financial disclosure, or concentrated voting power that sidelines ordinary shareholders.
How Companies Are Rated on ESG
Several agencies score companies on ESG performance, with MSCI being one of the most widely referenced. MSCI ESG Ratings use a seven-point scale ranging from AAA (the highest) down to CCC (the lowest). Ratings are measured relative to a company’s own industry, so a mining company is compared against other mining companies rather than against a software firm.
Each company is evaluated on two to seven key issues selected from a pool of 33 total factors, chosen based on the specific risks most relevant to that company’s industry. A key issue score ranges from 0 to 10 and reflects both a company’s exposure to risk and how well it manages that risk through strategy, programs, and measurable performance. If a company is involved in a serious controversy, such as an environmental disaster or a corruption scandal, its score takes a deduction of up to five points on the affected issue.
For the governance pillar, every company starts with a perfect 10, and deductions are applied based on weaknesses in board structure, ethics policies, or transparency. This deduction-based approach means governance is treated as a baseline expectation rather than a bonus.
How ESG Affects Investors
For individual investors, ESG most commonly shows up in fund selection. Mutual funds and ETFs labeled as ESG or sustainable screen their holdings using these criteria, excluding companies with poor scores or overweighting those with strong ones. This lets investors align their portfolios with their values without having to research each company individually.
That said, the ESG fund landscape has shifted recently. A study by the European Securities and Markets Authority found that roughly two-thirds of funds with ESG-related terms in their names changed those names, with many dropping the ESG label or switching to terms with less stringent requirements. About half also updated their investment policies. This reflects both tightened regulatory definitions of what qualifies as a genuine ESG fund and broader political pressure around the term in some markets.
Despite the branding shifts, the underlying analysis hasn’t disappeared. Many institutional investors still use ESG data as a risk management tool, viewing poor environmental or governance practices as financial risks that could hurt long-term returns. A company facing water scarcity, regulatory fines, or a governance scandal represents a material threat to shareholder value, regardless of whether an investor personally cares about sustainability.
Growing Disclosure Requirements
ESG reporting is increasingly moving from voluntary to mandatory. The European Union’s Corporate Sustainability Reporting Directive requires thousands of companies doing business in Europe to disclose detailed sustainability data. In the United States, certain large companies face new greenhouse gas emissions reporting requirements, with initial deadlines beginning in 2026 for scope 1 emissions (direct emissions from a company’s operations) and scope 2 emissions (indirect emissions from purchased energy). Scope 3 emissions, which cover the entire value chain including suppliers and product use, are also part of these requirements, though they’re harder to measure and subject to ongoing legal challenges.
For most people, these disclosure rules matter because they’re pushing companies toward more standardized and comparable ESG data. That makes it easier for investors, consumers, and employees to evaluate whether a company’s sustainability claims hold up or amount to greenwashing, the practice of making misleading environmental or social claims to improve public image.