The drivers of private and public eco-innovations in six large countries

The purpose of this paper is to examine and compare the contributions environmental innovation public sector private sector, respectively, their determinants. We analyze development over time triadic patents, classified as technological innovations, for six major patenting countries from 1990 2014. This done using a factor decomposition analysis framework. at both country aggregate level, set specific topics: alternative energy production, conservation, agriculture forestry, waste management. Results indicate that there has been shift an level towards environmentally sustainable technologies. In can be attributed changes in research priorities increased scale R&D. sound technologies efficiency gains. largest difference between observed R&D efficiency, where reductions have contributed negatively patent growth, whereas opposite true sector. sectors, focus shifted energy-related