Erratum to: Renewable Energy Policies and Technological Innovation: Evidence Based on Patent Counts

Abstract

While replicating the study of Johnstone et al. (2010), Bruns and Kalthaus (2017, forthcoming) noted that a dummy variable for one country (New Zealand) is missing in the reported regressions for solar patents. 1 The authors have re-estimated the models including the dummy variable, and the corrected results are reported alongside the original results in the table below. The first part of the table corresponds to the results presented in Table 5 in the original paper. The second part of the table corresponds to the results presented in Table 6, where the policy dummies other than those of primary interest (feed-in tariffs and renewable energy certificates) are combined into a single variable to avoid potential multicollinearity. The third part of the table corresponds to the results presented in Table 7, where we also drop the Kyoto Protocol dummy variable.