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Merchant Storage Investment in a Restructured Electricity Industry

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  • Afzal S. Siddiqui, Ramteen Sioshansi, and Antonio J. Conejo

Abstract

Restructuring and liberalisation of the electricity industry creates opportunities for investment in energy storage, which could be undertaken by a profit-maximising merchant storage operator. Because such a firm is concerned solely with maximising its own profit, the resulting storage-investment decision may be socially suboptimal (or detrimental). This paper develops a bi-level model of an imperfectly competitive electricity market. The modelling framework assumes electricity-generation and storage-operations decisions at the lower level and storage investment at the upper level. Our analytical results demonstrate that a relatively high (low) amount of market power in the generation sector leads to low (high) storage-capacity investment by the profit-maximising storage operator relative to a welfare maximiser. This can result in net social welfare losses with a profit-maximising storage operator compared to a no-storage case. Moreover, there are guaranteed to be net social welfare losses with a profit-maximising storage operator if the generation sector is sufficiently competitive. Using a charge on generation ramping between off- and on-peak periods, we induce the profit-maximising storage operator to invest in the same level of storage capacity as the welfare-maximising firm. Such a ramping charge can increase social welfare above the levels that are attained with a welfare-maximising storage operator.

Suggested Citation

  • Afzal S. Siddiqui, Ramteen Sioshansi, and Antonio J. Conejo, 2019. "Merchant Storage Investment in a Restructured Electricity Industry," The Energy Journal, International Association for Energy Economics, vol. 0(Number 4).
    • Handle: RePEc:aen:journl:ej40-4-sioshansi
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    Citations

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    Cited by:

    1. Williams, Olayinka & Green, Richard, 2022. "Electricity storage and market power," Energy Policy, Elsevier, vol. 164(C).
    2. Zhao, Dongwei & Jafari, Mehdi & Botterud, Audun & Sakti, Apurba, 2022. "Strategic energy storage investments: A case study of the CAISO electricity market," Applied Energy, Elsevier, vol. 325(C).
    3. Reinhard Haas & Claudia Kemfert & Hans Auer & Amela Ajanovic & Marlene Sayer & Albert Hiesl, 2022. "On the economics of storage for electricity: Current state and future market design prospects," Wiley Interdisciplinary Reviews: Energy and Environment, Wiley Blackwell, vol. 11(3), May.
    4. Afzal S. Siddiqui & Sauleh A. Siddiqui, 2022. "Ambiguities and nonmonotonicities under prosumer power," TOP: An Official Journal of the Spanish Society of Statistics and Operations Research, Springer;Sociedad de Estadística e Investigación Operativa, vol. 30(3), pages 492-532, October.
    5. Debia, Sébastien & Pineau, Pierre-Olivier & Siddiqui, Afzal S., 2021. "Strategic storage use in a hydro-thermal power system with carbon constraints," Energy Economics, Elsevier, vol. 98(C).
    6. Virasjoki, Vilma & Siddiqui, Afzal S. & Oliveira, Fabricio & Salo, Ahti, 2020. "Utility-scale energy storage in an imperfectly competitive power sector," Energy Economics, Elsevier, vol. 88(C).
    7. Csereklyei, Zsuzsanna & Kallies, Anne & Diaz Valdivia, Andres, 2021. "The status of and opportunities for utility-scale battery storage in Australia: A regulatory and market perspective," Utilities Policy, Elsevier, vol. 73(C).
    8. Mitul Ranjan Chakraborty & Subhojit Dawn & Pradip Kumar Saha & Jayanta Bhusan Basu & Taha Selim Ustun, 2022. "System Profit Improvement of a Thermal–Wind–CAES Hybrid System Considering Imbalance Cost in the Electricity Market," Energies, MDPI, vol. 15(24), pages 1-25, December.

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    JEL classification:

    • F0 - International Economics - - General

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