This paper evaluates the effectiveness of a policy mix between general innovation policies and environmental policies in fostering the adoption of global warming-related eco-innovations both in the short term and long term. Focusing on process eco-innovations, we investigate whether the combined impact of general innovation and environmental policy instruments, which we term a cross-instrumental policy mix, is greater than their individual impact. We examined data from the Mannheim Innovation Panel on German firms, investigating both cross-sectional data from 2015 and longitudinal data from two waves of the survey conducted in 2009 and 2015. We apply two models, based respectively on a matching analysis and a panel analysis. We find that cross-instrumental policy mix has a stronger positive effect on process eco-innovations than the impact of general innovation policy instruments alone, both in the short and long term. In contrast, although we expected the greater impact of a cross-instrumental policy mix relative to environmental policy instruments, this argument is not supported by our empirical results. Our study offers policy implications concerning the coordination of innovation and environmental policies in achieving an optimal policy mix.

本文评估了短期和长期内，一般性创新政策与环境政策之间的政策组合在促进采用与全球变暖相关的生态创新中的有效性。着眼于过程生态创新，我们研究了一般创新和环境政策工具（我们称其为跨仪器政策组合）的综合影响是否大于其各自的影响。我们检查了曼海姆创新小组有关德国公司的数据，调查了2015年的横断面数据和2009年和2015年进行的两次调查的纵向数据。我们分别应用了两个模型，分别基于匹配分析和小组分析。我们发现，在短期和长期内，跨仪器政策组合对流程生态创新的积极影响要大于仅对一般创新政策工具的影响。相比之下，尽管我们预计跨工具的政策组合相对于环境政策工具会产生更大的影响，但是我们的经验结果并不支持这种观点。我们的研究提供了有关在实现最佳政策组合方面协调创新与环境政策的政策含义。