Environmental Science and Pollution Research

, Volume 26, Issue 11, pp 11503–11507 | Cite as

Does combined heat and power mitigate CO2 emissions? A cross-country analysis

  • Jae-Hyung Park
  • Seul-Ye Lim
  • Seung-Hoon YooEmail author
Short Research and Discussion Article


Combined heat and power (CHP), which produces both heat and electricity at the same time, is so efficient that it can reduce energy use and emit less carbon dioxide (CO2) than conventional fossil fuel use. This article attempts to look empirically into the impact of CHP share in total electricity generation on CO2 emissions in a cross-country context. Data from 35 countries during the period 2009–2015 are used. For this purpose, the variable of CO2 emissions is regressed on three variables of constant, gross domestic product, and CHP share using two robust estimators. The results show that the level of CHP share of a country affects the level of its CO2 emissions negatively. That is, CHP leads to less CO2 emissions.


Combined heat and power CO2 emissions Cross-country analysis Robust estimator 


Funding information

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20184030202230).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Energy Policy, Graduate School of Energy and EnvironmentSeoul National University of Science and TechnologySeoulRepublic of Korea
  2. 2.Research Strategy Department, Frontier Research and Training InstituteKorea District Heating CorporationYonginRepublic of Korea

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