Market Power Analysis for the Turkish Electricity Market

Sensoy, Nuri

doi:10.1109/eem.2019.8916501

Cited by 5 publications

(1 citation statement)

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“…The results show that liberalisation resulted in a price drop, and a further market deregulation process will continue this downward trend. Sensoy [17] conducted a market power analysis for the Turkish Electricity Market using market share, the Herfindahl-Hirschman Index, and the Residual Supply Index as key measures. The results show that reforms in the electricity market resulted in a drop in the share of statecontrolled companies in total electricity generation in recent years.…”

Section: Literature Reviewmentioning

confidence: 99%

Revisiting Market Power in the Polish Power System

2023

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The consequences of the liberalisation of electricity markets have been widely discussed in the literature emphasising the successes or failures of privatisation and deregulation. While most developed power systems have undergone a form of economic transformation, they still require to be monitored and analysed to assess market power. The Polish power system is an example wherein the potential of market power examined fifteen years ago was summarised as significant. Since then, the transformation process and changes in the ownership structure have taken place. This study focuses on the assessment of the potential of market power in the Polish electricity market. For this purpose, statistics on power companies were collected and processed. Then, structural and behavioural measures were applied, including concentration ratios, the entropy coefficient, the Gini coefficient, the Herfindahl–Hirschman Index (HHI), the Residual Supply Index (RSI), and the Lerner Index. The results reveal that, despite a dynamic increase in renewable capacity, market concentration has increased in recent years, achieving an HHI of 2020.9 in 2021. An increase in the Lerner Index of lignite and hard coal-fired units is also observed, indicating high mark-ups by the key market players. Based on quantitative analysis, policy recommendations are outlined to reduce the negative impact of market power on consumers.

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Section: Literature Reviewmentioning

confidence: 99%