An analysis of the precision and validity of environmental, social, and governance (ESG) rating systems

Abstract

This study focuses on reviewing the ESG (Environmental, Social, Governance) scoring system and assessing its comparability and accuracy with the goal of comparing and measuring ESG ratings performance. ESG scoring has become an important tool to assess the sustainability of companies and to better guide sustainable investments. The study sought to determine how much variation there is between the scores given by different ESG rating agencies. It also seeks to understand the factors that cause the differences in scores. The research is based on previous literature and studies whose findings suggest that different ESG rating scores for the same company may vary significantly. This study uses a quantitative and deductive research method. The quantitative approach was chosen because it provides an objective and systematic way of analyzing large amounts of data. The deductive approach was also used to conduct the research. The deductive approach helps and enables the study to explore these differences in a systematic way and to analyze possible root causes. Four different ESG rating agencies were selected for the study and their scores were compared across 100 of the largest US companies by market capitalization. The results of the study show that there are clear differences between the scores given by ESG rating agencies. This difference is largely due to the weightings used by the ESG rating agency and the scoring methodology, which also differ significantly.