ESG & Sustainability Blog
Expert research on ESG ratings divergence, CSRD compliance, greenwashing detection, carbon credit integrity, TNFD nature risk, and ESG investing — written by the OpenESG research team.
ESG Ratings Divergence Explained: Why Scores Differ 40+ Points Across Providers
Two equally rigorous analysts can score the same company 40 points apart. This is not a bug — it is the defining structural challenge of ESG data. Learn why ESG ratings diverge and how to navigate multi-provider analysis.
Carbon Credits Explained: Voluntary vs Compliance Markets — ESG Analyst's Guide
Companies are buying billions in carbon credits to claim net-zero. Some credits are genuine. Many are not. Here is what every ESG analyst needs to know about carbon credit quality, additionality, and net-zero claim integrity.
How to Read a Corporate Sustainability Report: A 30-Minute Analyst Checklist
Sustainability reports are long, inconsistent, and full of carefully worded non-commitments. This step-by-step guide shows how to extract signal from the noise — covering assurance levels, absolute vs intensity metrics, base year manipulation, and greenwashing red flags.
EU Taxonomy for Sustainable Activities Explained: The Green Finance Classification System
The EU Taxonomy is the world's first government-backed classification system for sustainable economic activities — the technical foundation beneath SFDR and CSRD. Essential reading for analysts working with European companies or EU-regulated funds.
TNFD Explained: The Nature-Risk Disclosure Framework for ESG Reporting in 2026
Biodiversity and nature-related financial risks are the next frontier of ESG disclosure. The Taskforce on Nature-related Financial Disclosures (TNFD) framework is here — more complex than TCFD and rapidly approaching mandatory status. Here is what every ESG analyst needs to know.
The ESG Backlash: What the Performance Data Actually Shows
ESG investing is under sustained political attack in the US — over 40 states have introduced anti-ESG legislation. But what does the actual performance data show? We separate the political narrative from the empirical evidence on ESG returns, risk, and regulatory trajectory.
Water Risk in ESG Analysis: The Most Underpriced Material Factor
Carbon gets the headlines. Water gets the disruptions. Semiconductor fabs shutting down, food companies writing off crop failures, insurers retreating from coastal markets — water risk is already financially material and chronically underweighted in ESG scores.
Social Washing in ESG: How to Detect False Social Sustainability Claims
Environmental greenwashing gets the headlines. Social washing — exaggerated or false claims about worker welfare, diversity, and community impact — is harder to detect, more common, and increasingly subject to regulatory enforcement under CSDDD, Germany's Supply Chain Act, and the UK Modern Slavery Act.