Assessing the regional environmental management system's efficiency based on data envelopment models
<b>Subject.</b> The article addresses the eco-efficiency of regional economy. <b>Objectives.</b> The purpose is to design a methodology for assessing the comparative effectiveness of regional environmental management systems, taking into account the significant heterogeneity of regions in terms of eco-efficiency; develop approaches to assessing the eco-efficiency of regional economic systems; integrate these approaches into a single methodology. <b>Methods.</b> The study employs general scientific research methods. <b>Results.</b> The developed approach involves simultaneous solution of two tasks in the data envelopment analysis; one of them is formulated to assess the eco-efficiency of region's economy, and the other - to assess the value for money, aimed at protecting the environment in the region. The solution of these two problems enables to receive a large amount of data that can be used in designing strategies for regional development. <b>Conclusions.</b> The paper offers a new approach to solving the problems of comparative assessment of the effectiveness of regional environmental management systems, considering the structural heterogeneity of regional economies. The findings can be used to elaborate measures to encourage the activities of regional authorities in the field of environmental management and increase their responsibility for the effectiveness of environmental measures.