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Should Electricity Market Designs Be Improved to Drive Decarbonization ?

Author

Listed:
  • Chattopadhyay,Debabrata
  • Suski,Adam Krzysztof

Abstract

Wholesale electricity spot markets of different variants have been operating in most developedcountries and around 20 percent of their developing counterparts. Although these markets have by and large stoodthe test of time, their ability to decarbonize power systems in tandem with carbon, renewable, and other policy driversraises questions about the efficacy of the existing market designs. Expert opinions in the academic and industryliterature are divided on this issue, ranging from very few changes to sweeping changes. This review of the literaturesuggests that in the short term, there is prima facie no reason to believe that the existing market designs areinadequate. At least, there are robust mechanisms in the current markets for energy, capacity, and ancillary servicesthat can be mixed and matched to accommodate renewable energy and storage, and indeed substantial utility-scalerenewable energy additions have taken place in several developed countries that are traded through wholesalemarkets. In the medium term, there may be a need for additional mechanisms. Opinions begin to diverge on thisissue for high–variable renewable energy systems and places where markets, especially voluntary net pool markets, havetended to be illiquid due to the presence of legacy fuel supply and generation contracts. Markets like those in Indiaand South Africa, with liquidity in the day-ahead market below 10 percent after more than a decade since theystarted, are clearly not working, regardless of their decarbonization roles. There is no reason to rethink yetabout a complete overhaul of the market design, at least not until there is more evidence that the current systems arenot working and empirical evidence in support of a new mechanism. A fuller quantitative examination of the marketdesign options building on the insights derived in this review is a critical task. Future research efforts shouldconstruct country case studies to assess the performance of alternative market design proposals.

Suggested Citation

  • Chattopadhyay,Debabrata & Suski,Adam Krzysztof, 2022. "Should Electricity Market Designs Be Improved to Drive Decarbonization ?," Policy Research Working Paper Series 10207, The World Bank.
    • Handle: RePEc:wbk:wbrwps:10207
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    References listed on IDEAS

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