ESG Rating Improvements and Subsequent Environmental Outcomes: Evidence from Chinese Listed Firms

Whether ESG rating improvements precede observable environmental progress remains an empirical question. Using 38,430 firm-year observations for Chinese A-share firms covering rating changes from 2010 to 2023, this study examines subsequent recorded environmental penalties, emission-detail availability, and physical-emission changes. Models include firm and industry-by-year fixed effects, with prior regulatory visibility measured through matched key-polluter records. In the Huazheng baseline analysis, a one-standard-deviation increase in aggregate ESG improvement is associated with a 0.45-percentage-point decrease in next-year recorded penalty probability. Aggregate ESG and environmental-pillar improvements are positively associated with subsequent emission-detail availability. Average physical-emission associations are statistically insignificant in the preferred sample of 1130 observations from 363 firms. The negative environmental-pillar interaction under the original regulatory classification persists after selection weighting, while the affirmative-record-group slope is insignificant in the weighted model. Wind retains the positive environmental-pillar observability association, but its penalty and moderation estimates are insignificant. Official-list validation also yields an insignificant environmental-pillar interaction. Raw-quantity classifications yield insignificant associations between ESG improvement and actual reduction. The findings distinguish greater environmental-data visibility from operational emission reduction and show that the environmental interpretation of rating changes depends on the outcome, rating provider, and regulatory classification.