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Linking Environmental and Innovation Policy
By Gerlagh, Reyer, Snorre Kverndokk and Knut Einar Rosendahl
Memorandum 10/2008
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Abstract |
This paper addresses the timing and interdependence between innovation and environmental policy in a model of research and development (R&D). On a first-best path the environmental tax is set at the Pigouvian level, independent of innovation policy. With infinite patent lifetime, the R&D subsidy should be constant and independent of the state of the environment. However, with finite patent lifetime, optimal innovation policy depends on the stage of the environmental problem. In the early stages of an environmental problem, abatement research should be subsidized at a high level and this subsidy should fall monotonically over time to stimulate initial R&D investments. Alternatively, with a constant R&D subsidy, patents’ length should initially have a very long life-time but this should be gradually shortened. In a second-best situation with no deployment subsidy for abatement equipment, we find that the environmental tax should be high compared to the Pigouvian levels when an abatement industry is developing, but the relative difference falls over time. That is, environmental policies will be accelerated compared to first-best. |
| JEL Classification:
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H21, O30, Q42 |
| Keywords:
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Environmental policy, research and development, innovation subsidies, patents |
| Project:
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3144 Post Kyoto Climate Agreements and Technological Innovation
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| Financing:
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Norwegian Research Council |
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