This research bridges an important gap in prior studies by exploring Japan through fresh and innovative lenses. First, it provides a comprehensive analysis of the impact of renewable energy consumption and digitalization on ecological quality, utilizing data spanning from 1990:Q1 to 2021:Q4. Second, it uniquely incorporates trade globalization and green production processes as the key variables, which have been largely overlooked in prior research. Third, the study employs Kernel Regularized Quantile Regression, offering a precise and robust analytical framework for understanding the relationships between these variables. This distinctive approach integrates kernel methods to estimate quantile-specific marginal effects, thereby providing a more precise analytical framework. The results show that green production processes, financial development, and renewable energy consumption promote ecological quality. In addition, digitalization and trade globalization show weak and positive effects on ecological quality, while economic growth lessens ecological quality. The study suggests that policymakers in Japan initiate policies that promote green production processes and renewable energy consumption.