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Effects of Carbon Tax on Electricity Price Volatility: Empirical Evidences from the Australian Market

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  • Comincioli, Nicola
  • Vergalli, Sergio

Abstract

Among the wide variety of policy options adopted worldwide to control carbon emissions, one of the most environmentally effective and economically efficient is represented by carbon tax, that aims to recoup the damage arising from polluting production processes. In this paper, we focus on the Australian Carbon Pricing Mechanism (CPM) and on the effects that its introduction had on the electricity market. The most relevant effect is the reduction of the level of electricity price’s volatility. This effect has been investigated after having removed, from electricity data time series, the periodic behavior, through a multiple linear regression. Then, to study volatility dynamics, we fit a two-states Markov-switching model to represent a high-volatility and a low-volatility states of the world. This model highlighted that in both states the level of volatility is lower and that the persistence of the second state is increased by the presence of the CPM. This result is particularly important in investment evaluation: knowing the different dynamics of price volatility in presence of a carbon tax or not, can provide crucial information in investment decision and its timing.

Suggested Citation

  • Comincioli, Nicola & Vergalli, Sergio, 2020. "Effects of Carbon Tax on Electricity Price Volatility: Empirical Evidences from the Australian Market," 2030 Agenda 305205, Fondazione Eni Enrico Mattei (FEEM).
    • Handle: RePEc:ags:feemgc:305205
    DOI: 10.22004/ag.econ.305205
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    13. Comincioli, Nicola & Vergalli, Sergio, 2020. "Effects of Carbon Tax on Electricity Price Volatility: Empirical Evidences from the Australian Market," 2030 Agenda 305205, Fondazione Eni Enrico Mattei (FEEM).
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    1. Comincioli, Nicola & Vergalli, Sergio, 2020. "Effects of Carbon Tax on Electricity Price Volatility: Empirical Evidences from the Australian Market," 2030 Agenda 305205, Fondazione Eni Enrico Mattei (FEEM).

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    Keywords

    Environmental Economics and Policy;

    JEL classification:

    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • Q41 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Demand and Supply; Prices
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy

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