The Impact of Energy Prices on Green Innovation
基于18个OECD国家30年的行业层面数据，研究发现能源价格上升会显著促进绿色创新活动，平均能源价格每上涨10%，绿色创新数量增加3.4%，绿色创新占比提升4.8%。
Based on patent data and industry specific energy prices for 18 OECD countries over 30 years we investigate on an industry level the impact of energy prices on green innovation activities. Our econometric models show that energy prices and green innovation activities are positively related and that energy prices have a significantly positive impact on the ratio of green innovations to non-green innovations. More concretely, our main model shows that a 10% increase of the average energy prices over the previous five years results in a 3.4% and 4.8% increase of the number of green innovations and the ratio of green innovations to non-green innovations, respectively. We also find that the impact of energy prices increases with an increasing lag between energy prices and innovation activities. Robustness tests confirm the main results.