Corporate sustainability reports have become significantly more abundant since 2015, but a new University of Chicago Law School study of over 15,000 disclosures from 2,100 large companies reveals that the quality of information in those reports has actually declined. Researchers found that the “fluff ratio” — vague or meaningless sentences divided by total sentences — has risen, while specificity and quantitative content have dropped. This means that despite more companies adopting frameworks from CDP, SASB, and GRI, investors and civil society groups may be getting less actionable data, not more.
The study, led by Hajin Kim and colleagues, used a large language model to analyze reports for adherence to standards, language specificity, and puffery. The findings are sobering for an industry that has championed voluntary disclosure as a path to transparency. While early adopters have reduced their fluff over time, neither they nor newer reporters have improved on providing concrete, measurable data. “Voluntary regimes that want to move substance, not just adoption, may need firmer agreement on what specific, high-quality disclosure looks like, topic by topic,” the authors conclude.
Why is report quality declining?
One explanation is that as companies disclose more, they add narrative context to explain methodologies and assumptions, which can inflate word counts without adding hard numbers. University of Cologne accounting expert Maximilian Müller points out that this growth in narrative text may be a necessary byproduct of deeper disclosure, not mere greenwashing. However, the study’s methodology — measuring fluff against quantitative specificity — suggests that much of this text is padding, not substance. For energy companies, which face intense scrutiny on emissions and transition risks, the implication is clear: boilerplate statements about “leadership” do not substitute for audited metrics.
What does this mean for energy investors?
The findings hit at a critical moment for energy sector stakeholders. Regulators in the EU, US, and UK are pushing toward mandatory climate disclosures, but if voluntary reports are already deteriorating in quality, mandatory regimes may inherit a flawed baseline. For energy investors, the study underscores a pragmatic risk: reliance on sustainability reports for capital allocation decisions may be unwarranted without independent verification. The researchers’ suggestion that frameworks need “firmer agreement” on topic-specific metrics aligns with calls from groups like the International Sustainability Standards Board (ISSB) for more granular, industry-specific standards — a move that energy companies should prepare for now, not later.
- Fluff ratio increased as total sustainability report volume surged post-2015.
- Adoption of frameworks like CDP, SASB, and GRI did not correlate with higher report quality.
- Early reporters improved on fluff but not on specificity or quantitative content over time.
- Newer reporters showed no improvement on any quality dimension.
The study’s most provocative implication is that the very act of standardizing disclosure may be creating a compliance checkbox culture rather than a transparency revolution. For energy professionals, the path forward is not simply more reporting, but better-defined, auditable metrics — a lesson that regulators and standard-setters should heed as they finalize mandatory rules.
Read the full report at GreenBiz.