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Timing of innovation policies when carbon emissions are restricted: an applied general equilibrium analysis




This paper studies the timing of subsidies for environmental research and development (R&D) and how innovation policy is influenced by the costs of emissions. We use a dynamic computable general equilibrium (CGE) model with both general R&D and specific environmental R&D. We find two results that are important when subsidizing environmental R&D in order to target inefficiencies in the research markets. Firstly, the welfare gain from subsidies is larger when the costs of emissions are higher. This is because a high carbon tax increases the social (efficient) investment in environmental R&D, in excess of the private investment in R&D. Secondly, the welfare gain is greater when there is a falling time profile of the rate of subsidies for environmental R&D, rather than a constant or increasing profile. The reason is that the innovation externalities are larger in early periods.

Suggested Citation

  • Tom-Reiel Heggedal & Karl Jacobsen, 2008. "Timing of innovation policies when carbon emissions are restricted: an applied general equilibrium analysis," Discussion Papers 536, Statistics Norway, Research Department.
  • Handle: RePEc:ssb:dispap:536

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    References listed on IDEAS

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    Cited by:

    1. Tom-Reiel Heggedal, 2008. "On R&D and the undersupply of emerging versus mature technologies," Discussion Papers 571, Statistics Norway, Research Department.
    2. Bye, Brita & Jacobsen, Karl, 2011. "Restricted carbon emissions and directed R&D support; an applied general equilibrium analysis," Energy Economics, Elsevier, vol. 33(3), pages 543-555, May.
    3. Brita Bye & Karl Jacobsen, 2009. "On general versus emission saving R&D support," Discussion Papers 584, Statistics Norway, Research Department.

    More about this item


    Applied general equilibrium; endogenous growth; research and development; carbon emissions.;

    JEL classification:

    • E62 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Fiscal Policy
    • H31 - Public Economics - - Fiscal Policies and Behavior of Economic Agents - - - Household
    • O38 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Government Policy
    • Q55 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Technological Innovation

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