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Testing for Market Integration in the Australian National Electricity Market

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  • Rabindra Nepal

    (School of Economics, University of Queensland)

  • John Foster

    (School of Economics, University of Queensland)

Abstract

The National Electricity Market was established in 1998 as a response to the overall deregulation and restructuring of the Australian electricity sector. The wholesale market integration effects of this establishment, however, remain to be examined. We use pairwise unit root tests, cointegration analyses and a time varying coefficient model to determine the level and study the development of market integration in the regionally separate but interconnected markets in Australia. The results from the pairwise unit root tests provide a mixed evidence of price convergence while cointegration analyses does not clearly reject the absence of persistence price differences across the physically interconnected regions. The results from the time-varying coefficient model suggest an integrating market for electricity in Australia although full market integration has not been achieved yet. The results suggest the presence of significant transmission bottlenecks across the inter-regional interconnectors. Our results from cointegration analysis also supports the findings by Gonzalo and Lee (1998) that a proper use of the Johansen cointegration analysis requires a deeper data analysis than just the standard unit root tests.

Suggested Citation

  • Rabindra Nepal & John Foster, 2013. "Testing for Market Integration in the Australian National Electricity Market," Energy Economics and Management Group Working Papers 11-2013, School of Economics, University of Queensland, Australia.
    • Handle: RePEc:qld:uqeemg:11-2013
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    6. Naeem, Muhammad Abubakr & Karim, Sitara & Rabbani, Mustafa Raza & Nepal, Rabindra & Uddin, Gazi Salah, 2022. "Market integration in the Australian National Electricity Market: Fresh evidence from asymmetric time-frequency connectedness," Energy Economics, Elsevier, vol. 112(C).
    7. Han, Lin & Kordzakhia, Nino & Trück, Stefan, 2020. "Volatility spillovers in Australian electricity markets," Energy Economics, Elsevier, vol. 90(C).
    8. Bhatta, Guna Raj & Nepal, Rabindra & Harvie, Charles & Jayanthakumaran, Kankesu, 2022. "Testing for the uncovered interest parity condition in a small open economy: A state space modelling approach," Journal of Asian Economics, Elsevier, vol. 82(C).
    9. Pourkhanali, Armin & Khezr, Peyman & Nepal, Rabindra & Jamasb, Tooraj, 2024. "Navigating the crisis: Fuel price caps in the Australian national wholesale electricity market," Energy Economics, Elsevier, vol. 129(C).
    10. Yan, Guan & Trück, Stefan, 2020. "A dynamic network analysis of spot electricity prices in the Australian national electricity market," Energy Economics, Elsevier, vol. 92(C).
    11. Nepal, Rabindra & Foster, John, 2015. "Electricity networks privatization in Australia: An overview of the debate," Economic Analysis and Policy, Elsevier, vol. 48(C), pages 12-24.
    12. Abban, Abdul Rashid & Hasan, Mohammad Z., 2021. "Solar energy penetration and volatility transmission to electricity markets—An Australian perspective," Economic Analysis and Policy, Elsevier, vol. 69(C), pages 434-449.
    13. Rabindra Nepal & Tooraj Jamasb & Anupama Sen & Lawrence Cram, 2017. "Small Systems, Big Targets: Power Sector Reforms and Renewable Energy Development in Small Electricity Systems," Working Papers EPRG 1709, Energy Policy Research Group, Cambridge Judge Business School, University of Cambridge.
    14. Pawel Maryniak & Stefan Trueck & Rafal Weron, 2016. "Carbon pricing, forward risk premiums and pass-through rates in Australian electricity futures markets," HSC Research Reports HSC/16/10, Hugo Steinhaus Center, Wroclaw University of Technology.
    15. Khezr, Peyman & Nepal, Rabindra, 2021. "On the viability of energy-capacity markets under decreasing marginal costs," Energy Economics, Elsevier, vol. 96(C).
    16. Lin Han & Ivor Cribben & Stefan Trueck, 2022. "Extremal Dependence in Australian Electricity Markets," Papers 2202.09970, arXiv.org.
    17. Chen, Hao & Cui, Jian & Song, Feng & Jiang, Zhigao, 2022. "Evaluating the impacts of reforming and integrating China's electricity sector," Energy Economics, Elsevier, vol. 108(C).
    18. Apergis, Nicholas & Fontini, Fulvio & Inchauspe, Julian, 2017. "Integration of regional electricity markets in Australia: A price convergence assessment," Energy Economics, Elsevier, vol. 62(C), pages 411-418.
    19. Apergis, Nicholas & Pan, Wei-Fong & Reade, James & Wang, Shixuan, 2023. "Modelling Australian electricity prices using indicator saturation," Energy Economics, Elsevier, vol. 120(C).

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    More about this item

    Keywords

    pot prices; market integration; time series analysis;
    All these keywords.

    JEL classification:

    • C5 - Mathematical and Quantitative Methods - - Econometric Modeling
    • G1 - Financial Economics - - General Financial Markets
    • L95 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Gas Utilities; Pipelines; Water Utilities
    • Q47 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Energy Forecasting

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