During the last 10 years, Environmental, Social and Governance (ESG) has shifted from the periphery to become common parlance in mainstream finance. However, critics frequently argue that ESG delivers rhetorical appeal rather than measurable financial returns. The 2026 research paper ESG Value Creation in Private Equity: From Rhetoric to Returns by Greenfield, Monk and Rook challenges this perception by proposing a practical, evidence-based framework showing how ESG can directly enhance private equity performance.

Central to the paper is a straightforward but significant idea, that ESG is not a compliance measure or an ethical garnish, but rather a financially material investment practice that must be incorporated across the entire portfolio.

ESG as a Driver of Financial Value

Historically, private equity firms concentrated on operations, financial structures, and strategic repositioning to generate returns. ESG, in turn, was commonly reduced to risk management, and was used to ensure that companies did not violate regulations or damage their reputation. This paper shows that such a narrow perspective fails to capture the full potential of ESG.

Based on the results of the British Columbia Investment Management Corporation (BCI) data, the study suggests that interventions taken as a resulkt of ESG analysis boost earnings, decrease operational risk, and enhance exit readiness.

For example, cost reduction can occur through sustainability efforts such as energy efficiency, supply chain optimisation, volatility reduction, and increased investor confidence through good governance practices. When these factors are treated as complimentary rather than separate, ESG can become an engine of profitability and resilience, not just a tick box exercise.

This is in line with general industry trends. According to surveys of private equity firms, most currently do not regard ESG as a trade-off to returns, but rather as a source of value creation with many having ESG built into their deal sourcing, due diligence, and exit planning.

Moving Beyond Risk Management

One of the paper's most useful contributions is the distinction it draws between ESG as a risk management tool and ESG as a value creation strategy.

• Pre-investment phase: ESG can be used to identify risks in the valuation process, such as environmental liabilities or governance weaknesses.

• Post-investment phase: ESG becomes an active management tool to improve performance, including operational efficiency and stakeholder relationships.

Most organisations treat ESG as a defensive tool, applying it before investment to screen for risk. Research shows that real value is unlocked when ESG shifts from risk avoidance to active performance improvement. This is the difference between using ESG to protect returns and using it to engineer them.

A Framework for ESG Integration

The paper proposes a systematic approach to integrating ESG across the private equity investment lifecycle:

1. Materiality focus: Identify the ESG factors that directly influence financial performance, rather than pursuing broad, or generic sustainability targets.
2. Data driven decision making: Treat ESG metrics with the same rigour as financial metrics.
3. Lifecycle integration: Embed ESG at every stage, from due diligence through to exit strategy.

This model transforms ESG into a quantifiable and practical set of drivers that can be tied to fundamental business performance aspects like margins, risk exposure, and valuation multiples.

Challenges and Criticisms

ESG integration in private equity is not without its difficulties. Inconsistent data, the absence of standardised metrics, and the risk of greenwashing remain persistent criticisms. Some ESG initiatives also require upfront investment with returns that materialise over the long term, creating tension with shorter-term fund cycles. The paper by Greenfield, Monk and Rook (2026) acknowledges these limitations but argues they can be addressed through better data systems, clearer frameworks, and stronger alignment between ESG metrics and financial incentives.

A Broader Shift in Capitalism

The paper's implications extend beyond private equity. If ESG can be shown to drive measurable financial returns in one of the most commercially rigorous corners of finance, it strengthens the case that sustainability and value creation are not in tension across the broader economy. Companies that embed sustainability into their strategy may be better positioned than those that treat it as secondary, not as a matter of ethics, but as a matter of competitive advantage.

A career Reflection 

For fianciers, investors, consultants, and corporate leaders, a deeper question is worth sitting with: what kind of organisation dis the best place to build your career for the long term?

It is easy to implement existing practices, aim to optimise for short-term earnings, and measure success against pre-established indicators. But the growing relevance of ESG signals a demand for a different kind of professional, one who understands the connections between sustainability and financial performance and can navigate both with equal fluency.

• Are you working on challenges that build long-term outperfomance, not just near-term results?
• Do you recognise ESG as a driver of financial performance, or do you still see it as separate from commercial success?
• Are you developing skills that will remain relevant as sustainability knoweldge becomes a baseline expectation rather than a differentiator?

The shift from rhetoric to returns in ESG is not just an investment narrative. It reflects a broader change in what the economy values and who it rewards. The professionals who recognise this early, and build accordingly, will be better positioned not only in their careers, but in their contribution to a more sustainable and responsible model of business.