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    Digest of the Handbook on Electricity Markets - International Edition: 2022, #9
    Digest of the Handbook on Electricity Markets - International Edition: 2022, #9
    Digest of the Handbook on Electricity Markets - International Edition: 2022, #9
    Ebook198 pages1 hour

    Digest of the Handbook on Electricity Markets - International Edition: 2022, #9

    By EU-China Energy Cooperation Platform Project

    ()

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    About this ebook

    This digest was prepared by：

     

    Jean-Michel Glachant, Florence School of Regulation and

    Nicolò Rossetto, Florence School of Regulation

     

    with generous support from the authors of the Handbook on Electricity Markets.

     

    LEGAL DISCLAIMER

     

    Chapter 1 and the book cover are included here in this digest with the permission from Edward Elgar Publishing Ltd.The information and views set out in this Digest are those of the author(s) and do not necessarily reflect the official opinion of the European Union, or ECECP. Neither the European Union nor or ECECP can guarantee the accuracy of the data included in this study. Neither the European Union, ECECP nor any person acting on their behalf may be held responsible for the use, which may be made of the information contained therein. 

     

    © 2022 European Union. All rights reserved.

    English editing: Helen Farrell, Chinese editing: Chi Jieqiao

    LanguageEnglish
    PublisherEU-China Energy Cooperation Platform
    Release dateNov 7, 2022
    ISBN9798215913895
    Digest of the Handbook on Electricity Markets - International Edition: 2022, #9

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      Digest of the Handbook on Electricity Markets - International Edition - EU-China Energy Cooperation Platform Project

      Foreword

      The record-breaking temperatures seen in the summer of 2022 have shown the impact of global warming. Whether in Europe or China, no one can escape it.

      Decarbonisation is the only way forward: future electricity generation will have to come to a large extent from renewable energy with the remaining share coming from other low-carbon sources. The tremendous growth of renewable electricity capacity is fundamentally changing global electricity systems and presents power grids with enormous challenges. In the past decade, China has emerged as a global renewable energy champion, ranking first for both investment in and production of renewable energy. In 2021, renewable power plants made up more than 1 000 GW of China’s 2 200 GW installed power capacity, in a mix of solar, wind and hydropower. With the new round of power market reforms in 2015, the coal-fired power tariff reform in October 2021 and the announcement in January 2022 that a national unified power market system is to be established, momentum is building for the creation of an electricity market in China.

      China’s power market designers and policy makers are now grappling with the problem of how to integrate intermittent renewable energy effectively under China’s socio-technical system. It is a good moment to find out about the experiences of other power markets throughout the world that have confronted similar issues. What market measures have helped to minimise power curtailment, blackouts, and stranded assets?

      The publication of the Handbook on Electricity Markets in November 2021 could not have come at a better moment. Edited by Jean-Michel Glachant, Director of the Florence School of Regulation, Paul L. Joskow, Massachusetts Institute of Technology, and Michael G. Pollitt, University of Cambridge, it includes contributions from the most brilliant thinkers and experts in the field of electricity markets.

      The EU-China Energy Cooperation Platform has commissioned an EU-funded Digest of the Handbook so that its key points are available to busy decision-makers. Jean-Michel Glachant and Nicolò Rossetto of the Florence School of Regulation have condensed its contents, in consultation with its numerous expert contributors. An edition of the Digest is available for distribution in China, alongside an international edition in both Chinese and English. The China edition includes an extra chapter, ‘Takeaways from the Handbook on Electricity Markets in China,’ by Michael G. Pollitt.

      In commissioning the Digest, ECECP hopes to ensure that the wealth of information in the handbook can reach the widest possible readership, and so share findings that could help to ease the global transition to a carbon-free economy.

      Dr Flora Kan

      Team Leader of the EU-China Energy Cooperation Platform

      Glossary

      1667394526539glossary2

      CHAPTER 1. Introduction to the Handbook on Electricity Market

      Jean-Michel Glachant, Paul L. Joskow and Michael G. Pollitt

      The electric power industries in all countries have changed enormously over the roughly 140-year history of central station generation/transmission/distribution systems supplying electricity to the public. The evolution has reflected technological change on both the supply and demand sides, exploitation of economies of scale, environmental and other policy constraints, organizational and regulatory innovation, interest group politics and ideology.[1] This handbook focuses on the latest set of institutional changes to electric power sectors around the world that are generally captured by the phrases restructuring, competition, decarbonization and regulatory reform.

      The contemporary restructuring of the electric power industry has involved: (1) the separation or unbundling of the previously (typically) vertically integrated — through common ownership or regulated long-term contracts — generation, transmission, distribution and retail supply segments of the industry; (2) the deconcentration of and free entry into the generation segment; (3) the reorganization of the transmission/ system operations segment; and (4) the separation of the physical distribution (delivery) segment from the financial arrangements for retail supply of energy.

      These restructuring initiatives have been designed to enable competition between generators to supply energy, ancillary services and capacity in wholesale markets and to open retail supply to competition. Regulatory reform has been focused on actions to facilitate the efficient evolution of competition, to improve the performance of the remaining regulated monopoly segments of the industry and, most recently, to integrate efficiently intermittent wind and solar generation along with electricity storage, as electric power systems respond to constraints on greenhouse gas emissions.

      Government policies and regulation have been particularly important in directing the design of wholesale markets, defining the obligations and behaviour of transmission owners and system operators, improving the performance of regulatory mechanisms that specify how transmission and distribution system owners and system operators are compensated, and guarding against anti-competitive behaviour in the newly competitive wholesale markets and retail supply segments. Policies designed to decarbonize the electricity sector by replacing fossil-fuel generation with zero-carbon resources, primarily adding intermittent wind and solar generation along with storage, have created a new set of issues for system operation, wholesale market design, retail rate design, the investment framework for wind, solar and storage, reliability and other considerations. Electric power systems built around dispatchable, primarily thermal generation with capacity constraints are now evolving to manage systems with intermittent wind and solar generation at scale, energy storage and high levels of spot market price volatility as zero marginal operating cost intermittent resources penetrate these systems. Deep decarbonization is transforming electric power systems from capacity-constrained systems to energy-constrained systems. This transition requires aggressive carbon emissions constraints with network reliability criteria.

      Different countries, and even states and provinces within countries, have approached this basic restructuring programme in different ways. The first major initiative occurred in England and Wales starting in 1989.[2] Restructuring and competition initiatives in the US, Canada, Australia, the EU and other countries proceeded in the late 1990s and early 2000s. In most cases, early reforms have been followed with additional design and regulatory changes in response to problems that emerged during the reform process, lessons learned, new environmental policies, especially policies to respond to climate change, and the evolution of generation supply and storage technologies compatible with these environmental goals (wind, solar, storage, system operations and computing capabilities, energy efficiency and demand response). While the basic architecture of restructuring is similar across countries, states and provinces, there are significant differences in the details. And there are some countries and regions that have not restructured at all and continue to rely on traditional arrangements (e.g., large parts of the US and Canada).

      This handbook brings together a wealth of expertise to look at both the current legacy state of power markets around the world (in Part I) and how those power markets can and should adapt to new low and zero-carbon generation technologies, energy storage and the policy priorities that are driving their adoption (in Part II). In the rest of this introduction, we briefly summarize some of the key issues covered in the 21 chapters that follow this one.

      Part I  Taking Stock: The Legacy

      Chapter 2 by Richard Schmalensee discusses the strengths and weaknesses of the traditional institutional arrangements, outlined above, as they emerged following the First World War. The chapter also identifies some of the challenges to wholesale and retail markets and retail pricing associated with deep decarbonization of electricity supply and the associated reliance on intermittent wind and solar generation and energy storage as dispatchable fossil-fuel generation is replaced.

      The handbook then turns to wholesale and retail market design, strengths and weaknesses of different approaches, and adaptations over time in several different countries and regions. There are many similarities between these market models, but also some important differences. The market models have all evolved in response to lessons learned from experience and to changes in public policies. While Part I of the handbook does not cover the market models adopted in all countries and regions, the range of wholesale and retail market design differences and adaptations to imperfections and public policy changes capture most of the variations that we see around the world.

      Chapter 3 by Paul Joskow and Thomas-Olivier Léautier presents the basic theory of optimal investment and pricing at the bulk power or wholesale level for systems comprised primarily of dispatchable fossil-fuelled and nuclear thermal generating capacity. This theory can be traced back to the work of Marcel Boiteux, Ralph Turvey and others in the 1950s and 1960s. That work focused on optimal investment and optimal pricing for a centrally planned monopoly with dispatchable thermal generation at what we would now call the wholesale level.[3] However, this basic theory formed the basis for the initial design of competitive wholesale markets, essentially assuming a duality between optimal investment and pricing in a centrally planned system with price formation and investment in competitive wholesale markets. Whether and how this basic theory and its application to wholesale market design must be revised to account for deep decarbonization of the electricity sector with high levels of intermittent wind and solar generation and storage is the focus of Part II of this handbook.

      Chapter 4 by Frank Wolak discusses the key design features of successful wholesale electricity markets in general. These include: (1) matching the wholesale market design and resulting generator dispatch and congestion management to the physical attributes of electric power systems; (2) market and regulatory mechanisms to govern the incentives for entry and exit of generators consistent with achieving long- term generation resource adequacy criteria; (3) horizontal market power concerns and mitigation mechanisms; and (4) mechanisms to integrate demand response into wholesale markets. The chapter also discusses issues that arise in small markets and developing country contexts. It concludes with a brief discussion of market design issues associated with the integration of grid-scale and distributed renewables, mainly wind and solar.

      Chapter 5 by Stephen Littlechild discusses the development of competitive retail supply

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