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Sustainability 2017, 9(4), 548; doi:10.3390/su9040548

Impacts of Low-Carbon Innovation and Its Heterogeneous Components on CO2 Emissions

International Business School, Shaanxi Normal University, Xi’an 710119, China
School of Finance and Economics, Xi’an Jiaotong University, Xi’an 710061, China
Center for Economic Research, Shandong University, Jinan 250100, China
Donlinks School of Economics and Management, University of Science and Technology Beijing, Beijing 100083, China
Author to whom correspondence should be addressed.
Academic Editors: Ning Zhang, Liexun Yang and Peng Zhou
Received: 3 February 2017 / Revised: 1 April 2017 / Accepted: 1 April 2017 / Published: 5 April 2017
View Full-Text   |   Download PDF [249 KB, uploaded 6 April 2017]


This paper aims to investigate the impact of low-carbon innovation on CO2 emissions. Using patent statistics, we measured low-carbon innovations for 15 major economies during the period of 1992–2012. Then, we classified low-carbon technology into clean and gray technology according to the patent classification system. Following the empirical Environmental Kuznets Curve (EKC) framework, we explored the effects of low-carbon innovation and its components on CO2 emissions. We did not find any evidence of significant influence of low-carbon innovation. Through further estimations, a significantly negative effect of clean innovation was found while the effect of gray innovation is not clear. Heterogeneous impacts within low-carbon technology provide an explanation for the insignificant impact of low-carbon innovation. View Full-Text
Keywords: low carbon technologies; clean innovation; gray innovation; patent statistics; CO2 emissions low carbon technologies; clean innovation; gray innovation; patent statistics; CO2 emissions
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yan, Z.; Yi, L.; Du, K.; Yang, Z. Impacts of Low-Carbon Innovation and Its Heterogeneous Components on CO2 Emissions. Sustainability 2017, 9, 548.

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