Though the environmental Kuznets curve (EKC) was originally developed to model the ambient concentrations of pollutants, most subsequent applications focused on pollution emissions. Yet, previous research suggests that it is more likely that economic growth could eventually reduce the...

This article presents a critical assessment of research over the last 40 years that may be brought under the umbrella of “energy efficiency,” spanning different aggregations and domains – from individual producing and consuming agents to economy-wide effects, the role of innovation, and...