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Sustainable Transmission Planning in Imperfectly Competitive Electricity Industries: Balancing economic efficiency and environmental outcomes

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  • Afzal S. SIDDIQUI
  • TANAKA Makoto
  • Yihsu CHEN

Abstract

We explore the role of a transmission system operator (TSO) that builds a transmission line to accommodate renewable energy while attempting to lower emissions. A TSO in a deregulated electricity industry can only indirectly influence outcomes through its choice of the transmission line capacity. Via a bi-level model, we show that this results in less transmission capacity and with limited emissions control in a perfectly competitive industry vis-a-vis a benchmark centrally planned system. Surprisingly, a carbon tax on industry leads to a perfect alignment of incentives and maximized social welfare only under perfect competition. By contrast, a carbon tax actually lowers social welfare under a Cournot oligopoly as the resulting reduction in consumption facilitates the further exercise of market power.

Suggested Citation

  • Afzal S. SIDDIQUI & TANAKA Makoto & Yihsu CHEN, 2017. "Sustainable Transmission Planning in Imperfectly Competitive Electricity Industries: Balancing economic efficiency and environmental outcomes," Discussion papers 17024, Research Institute of Economy, Trade and Industry (RIETI).
  • Handle: RePEc:eti:dpaper:17024
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    File URL: https://www.rieti.go.jp/jp/publications/dp/17e024.pdf
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    References listed on IDEAS

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    1. Barnett, A H, 1980. "The Pigouvian Tax Rule under Monopoly," American Economic Review, American Economic Association, vol. 70(5), pages 1037-1041, December.
    2. Requate, Till, 2005. "Environmental Policy under Imperfect Competition: A Survey," Economics Working Papers 2005-12, Christian-Albrechts-University of Kiel, Department of Economics.
    3. Severin Borenstein & James. Bushnell & Steven Stoft, 2000. "The Competitive Effects of Transmission Capacity in A Deregulated Electricity Industry," RAND Journal of Economics, The RAND Corporation, vol. 31(2), pages 294-325, Summer.
    4. Sauma, Enzo E. & Oren, Shmuel S., 2009. "Do generation firms in restructured electricity markets have incentives to support social-welfare-improving transmission investments?," Energy Economics, Elsevier, vol. 31(5), pages 676-689, September.
    5. Enzo Sauma & Shmuel Oren, 2006. "Proactive planning and valuation of transmission investments in restructured electricity markets," Journal of Regulatory Economics, Springer, vol. 30(3), pages 358-387, November.
    6. Siddiqui, Afzal S. & Tanaka, Makoto & Chen, Yihsu, 2016. "Are targets for renewable portfolio standards too low? The impact of market structure on energy policy," European Journal of Operational Research, Elsevier, vol. 250(1), pages 328-341.
    7. Robert Wilson, 2002. "Architecture of Power Markets," Econometrica, Econometric Society, vol. 70(4), pages 1299-1340, July.
    8. Enzo Sauma & Shmuel Oren, 2006. "Proactive planning and valuation of transmission investments in restructured electricity markets," Journal of Regulatory Economics, Springer, vol. 30(3), pages 261-290, November.
    9. Frederic Murphy & Yves Smeers, 2010. "On the Impact of Forward Markets on Investments in Oligopolistic Markets with Reference to Electricity," Operations Research, INFORMS, vol. 58(3), pages 515-528, June.
    10. E. Anderson & A. Philpott & H. Xu, 2007. "Modelling the effects of interconnection between electricity markets subject to uncertainty," Mathematical Methods of Operations Research, Springer;Gesellschaft für Operations Research (GOR);Nederlands Genootschap voor Besliskunde (NGB), vol. 65(1), pages 1-26, February.
    11. repec:spr:compst:v:65:y:2007:i:1:p:1-26 is not listed on IDEAS
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