MARKET POWER AND THE PROBLEM OF SECURITY OF SUPPLY IN THE NATIONAL ELECTRICITY MARKET

Author(s):  
MALCOLM ABBOTT
Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6741
Author(s):  
Dzikri Firmansyah Hakam ◽  
Sudarso Kaderi Wiyono ◽  
Nanang Hariyanto

This research optimises the mix and structure of Generation Companies (GenCos) in the Sumatra power system, Indonesia. Market power, indicating the ability to raise prices profitably above the competitive level, tends to be a significant problem in the aftermath of electricity market restructuring. In the process of regulatory reform and the development of competitive electricity markets, it is desirable and practical to establish an efficient number of competitor GenCos. Simulations of a power system account for multi-plant mergers of GenCos subject to a regulatory measure of the Residual Supply Index and the influence of direct current load flow and the topology of the system. This study simulates the Sumatra power system in order to determine the following: optimal market structure, efficient GenCo generation mix, and the optimal number of competitive GenCos. Further, this study seeks to empirically optimise the electricity generation mix and electricity market structure of the Sumatra power system using DC load flow optimisation, market power index, and multi-plant monopoly analysis. The simulations include generation and transmission constraints to represent network constraints. This research is the first to analyse the Sumatra power system using imperfect (Cournot) competition modelling. Furthermore, this study is the first kind to optimise the mix and structure of the Sumatra generation power market. The guidelines and methodology in this research can be implemented in other countries characterised by a monopoly electricity utility company.


2004 ◽  
Vol 70 (1) ◽  
pp. 123-136 ◽  
Author(s):  
Judy Johnston

When governments open up opportunities for private investment in traditional public sector areas, it is increasingly clear that a useful range of performance management information needs to be available to both government and business. Government needs to know how it is performing, comparatively, within and beyond its own domain, for the development of public policy and productivity enhancement. Business needs to know, understand and monitor the industry environment in which investment is contemplated or has already taken place. Performance measurement and monitoring is especially important where governments wish to attract foreign direct investment (FDI) to their shores. Whether governments manage performance and information well or are still constrained by bureaucratic and political thinking is still at issue. Using the example of the contrived national electricity market in Australia, this article, through literature and document review, examines the likely value to government and business of performance information, now available in the public domain. First, the article considers some of the changes to the Australian electricity industry. Second, specific performance indicators relevant to the national electricity market are examined in terms of their utility for government and business decision-making. Third, the impact of the political environment on performance management information is explored. The article concludes that while some important quantitative performance management information is available in a rational sense, other more political, qualitative indicators also need to be taken into account.


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