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Climate Finance Intermediation: Interest Spread Effects in a Climate Policy Model

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  • Kai Lessmann
  • Matthias Kalkuhl

Abstract

Interest rates are central determinants of saving and investment decisions. Costly financial intermediation distort these price signals by creating a spread between the interest rates on deposits and loans with substantial effects on the supply of funds and the demand for credit. This study investigates how interest rate spreads affect climate policy in its ambition to shift capital from polluting to low-carbon sectors of the economy. To this end, we introduce financial intermediation costs in a dynamic general equilibrium climate policy model. We find that costly financial intermediation affects carbon emissions in various ways through a number of different channels. For low to moderate interest rate spreads, carbon emissions increase by up to 7 percent, in particular, because of lower investments into the capital intensive clean energy sector. For very high interest rate spreads, emissions fall because lower economic growth reduces carbon emissions. If a certain temperature target should be met, carbon prices have to be adjusted upwards by up to one third under the presence of capital market frictions.

Suggested Citation

  • Kai Lessmann & Matthias Kalkuhl, 2020. "Climate Finance Intermediation: Interest Spread Effects in a Climate Policy Model," CESifo Working Paper Series 8380, CESifo.
  • Handle: RePEc:ces:ceswps:_8380
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    File URL: https://www.cesifo.org/DocDL/cesifo1_wp8380.pdf
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    1. Climate Finance Intermediation: Interest Spread Effects in a Climate Policy Model
      by Christian Zimmermann in NEP-DGE blog on 2020-08-27 03:44:19

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    More about this item

    Keywords

    financial friction; banking; greenhouse gas mitigation;
    All these keywords.

    JEL classification:

    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming
    • Q58 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Government Policy

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