As energy and environmental issues continue to generate social concerns, firms are pushed to alleviate their energy and environmental externalities from economic activities and network operations while pursuing economic interests. A comprehensive performance evaluation involving both productive and environmental factors is therefore desired by firms to aggregate multiple aspects into condensed information to facilitate decision-making. In this study, we develop a new eco-efficiency measure for energy-intensive economic activities, which integrates productive and environmental factors in the presence of undesirable outputs. The proposed measure has the following merits in comparison with a majority of existing ones that have been widely used in energy- and environment-related areas. It guarantees Pareto-Koopmans eco-efficiency because only non-dominated entities are measured as eco-efficient. It also captures any actual fluctuations in inputs, desirable outputs, and undesirable outputs, as it proves to be strongly monotonic in all input and output dimensions. It has a positive significance for promoting undesirable output abatement, because it stimulates scale improvement for entities in pursuit of economies of scale. It also provides great flexibility of improvement for individual inputs and outputs to achieve eco-efficiency. The marginal abatement costs of undesirable outputs are estimated to facilitate managing the potential tradeoff between undesirable output abatement and desirable output production. We also extend it to weighted eco-efficiency measures for specific situations wherever necessary. Its practicability and comparison with existing models are illustrated by an empirical example.

随着能源和环境问题继续引起社会关注，企业在追求经济利益的同时，被迫从经济活动和网络运营中缓解其能源和环境外部性。因此，企业希望对生产要素和环境要素进行全面的绩效评估，以将多个方面汇总为简明的信息，以便于决策。在这项研究中，我们针对能源密集型经济活动开发了一种新的生态效率措施，该措施在存在不良产出的情况下整合了生产和环境因素。与已广泛用于能源和环境相关领域的大多数现有措施相比，拟议措施具有以下优点。它保证了Pareto-Koopmans的生态效率，因为只有非主导实体才被视为生态效率。它还证明了输入，期望输出和不期望输出的任何实际波动，因为事实证明，它在所有输入和输出维度上都是很强的单调性。它对促进不期望的产出减少具有积极意义，因为它刺激了追求规模经济的实体的规模改善。它还为个人投入和产出的改进提供了极大的灵活性，以实现生态效率。估计不希望有的产出的边际减排成本，以便于管理不希望有的减排和期望的产出之间的潜在折衷。在必要时，我们还将其扩展到针对特定情况的加权生态效率度量。