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Time-Frequency Spillovers and the Determinants among Fossil Energy, Clean Energy and Metal Markets

Using the frequency-domain spillover index method, we investigate time-frequency spillovers and their underlying drivers among fossil energy, clean energy and metal markets. We find that short-term spillovers are stronger than long-term spillovers. Global clean energy markets are powerful spillover transmitters that can have strong impacts on fossil energy and metal markets. Rare earth metals are most vulnerable to spillover effects from clean energy and base metal markets, particularly in the long term. Different clean energy sources and metal markets have heterogeneous connectedness, e.g., the impact of wind energy on rare earth market is greater than that of solar energy. The short-term spillovers are mainly driven by policy changes, while the long-term spillovers are mainly affected by stock market uncertainty and economic fundamentals. Our findings have important implications for the construction of optimal diversification strategies and the design of policy incentives to promote clean energy investments across different time horizons.

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Keywords: Clean energy, Metals, Spillovers, Time-frequency, Spillover drivers

DOI: 10.5547/01956574.44.2.qdin

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Published in Volume 44, Number 2 of the bi-monthly journal of the IAEE's Energy Economics Education Foundation.


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