scholarly journals Does Strategic Ability Affect Efficiency? Evidence from Electricity Markets

2019 ◽  
Vol 109 (12) ◽  
pp. 4302-4342 ◽  
Author(s):  
Ali Hortaçsu ◽  
Fernando Luco ◽  
Steven L. Puller ◽  
Dongni Zhu
Keyword(s):  
Electricity Markets ◽  
Electricity Market ◽  
Price Competition ◽  
Structural Model ◽  
Significant Heterogeneity ◽  
Hierarchy Model ◽  
Cognitive Hierarchy ◽  
Strategic Ability ◽  
Equilibrium Bidding ◽  
The Cost

Oligopoly models of price competition predict that strategic firms exercise market power and generate inefficiencies. However, heterogeneity in firms’ strategic ability also generates inefficiencies. We study the Texas electricity market where firms exhibit significant heterogeneity in how they deviate from Nash equilibrium bidding. These deviations, in turn, increase the cost of production. To explain this heterogeneity, we embed a cognitive hierarchy model into a structural model of bidding and estimate firms’ strategic sophistication. We find that firm size and manager education affect sophistication. Using the model, we show that mergers which increase sophistication can increase efficiency despite increasing market concentration. (JEL D24, D43, G34, L13, L25, L94)

scholarly journals Use of Blockchain Technology in Energy Banking and Electricity Markets

2021 ◽  
Vol 2 (3) ◽  
pp. 179-186
Author(s):  
S. K. Jain ◽  
Paresh Khandelwal ◽  
P. K. Agarwal
Keyword(s):  
Real Time ◽  
Electricity Markets ◽  
Electricity Market ◽  
Electric Energy ◽  
Third Party ◽  
Over The Counter ◽  
Market Participants ◽  
Blockchain Technology ◽  
Power Exchange ◽  
The Cost

The power system reforms worldwide have commoditized electric energy and thus the electricity market has been developed. With this, trading of electric energy takes place in various time-domain like the day ahead, real-time, etc. These transactions take place through over the counter (OTC) or Power Exchange (Px) which provide to the market participants the required platform and payment security. The transactions on OTC and Px requires a third-party platform and guarantee for contract & settlement, there incurs overhead cost. Since electric energy is a fungible commodity, it can be transacted very well with the old system like barter. Energy Banking is one such mechanism wherein one utility supplies the energy to another utility that need it more and in leisure, the energy can then be provided back. The requisite security of the transactions can be provided by blockchain technology. Energy banking is presently being done only on MW quantum basis with no price tag despite the cost being dependent on the demand-supply ratio. To ensure energy banking transactions in real-time and free from the perils of financial settlements, this article suggests the use of the Peer-to-Peer (P2P) model of blockchain technology for executing Smart Contracts mutually agreed upon by both parties and avoiding third parties overhead costs. Doi: 10.28991/HIJ-2021-02-03-03 Full Text: PDF

scholarly journals A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3395
Author(s):  
Hansol Shin ◽  
Tae Hyun Kim ◽  
Kyuhyeong Kwag ◽  
Wook Kim
Keyword(s):  
Electricity Markets ◽  
Electricity Market ◽  
Market Price ◽  
Production Costs ◽  
Market Participants ◽  
Locational Marginal Pricing ◽  
Side Payments ◽  
Sales Company ◽  
Convex Costs ◽  
The Cost

Under marginal-cost pricing, some generators cannot recover their production costs at the market price due to non-convexities in the electricity market. For this reason, most electricity markets pay side-payments to generators whose costs are not sufficiently recovered, but side-payments present the problem of deteriorating transparency in the market. Recently, convex hull pricing and extended locational marginal pricing have been reviewed or gradually introduced to reduce side-payments. Another method is to include non-convex costs in the market price, which is applied in the Korean electricity market. Although it is not generally considered in the electricity market, the Vickrey auction method is also one of the pricing mechanisms that can reduce side-payments. The main purpose of this study is to analyze the financial impact of these alternative pricing mechanisms on market participants through rigorous simulation. We applied the alternative pricing schemes to the Korean electricity market, and the impacts are analyzed by comparing the cost aspect of an electricity sales company and the profit aspect of generation companies. As a result of the simulation study, each pricing mechanism not only differed in the degree to which side-payments are reduced but also has different effects on the type of generators.

scholarly journals Controversial Results of the Reform of the Russian Electric Power Industry in 1986–2008

2021 ◽  
pp. 109-120
Author(s):  
Sergey Ya. Chernavskii
Keyword(s):  
Electric Power ◽  
Electricity Markets ◽  
Electricity Market ◽  
Economies Of Scale ◽  
Electric Power Industry ◽  
Power Industry ◽  
Key Issues ◽  
Wholesale Electricity Market ◽  
Reform Model ◽  
The Cost

The article discusses the ambiguous results of the reform of the Russian electric power industry. Some of the intended goals of the reform have been achieved, while others have not yet been achieved, and the reform should be continued. Although more than 13 years have passed since the final stage of the reform, there is no agreement in the literature on many key issues characterizing the reform: an explanation of the reasons and factors that influenced the decision to reform the Russian electric power industry, the goals of the reform, the type of the reform model, the validity of its adaptation to the real Russian conditions and institutions that had developed by the beginning of the reform, the results of the reform and their value for society. It was found that contradictory results of the reform are caused by both objective and subjective factors. Along with obvious successes (e.g., denationalization of the industry) and obvious failures (including failure to create retail electricity markets) many results (elimination of vertical integration, level of competition on wholesale electricity markets, etc.) are not observable and have not received a clear and unambiguous assessment of their usefulness to society. Studies using modern economic theory and economic-mathematical modeling were required. No statistically significant economies of scale in electricity generation have been found in large companies generating electricity. Thus, the use of competition as a mechanism to coordinate the interests of society, producers and consumers of electricity and the creation of a wholesale electricity market is scientifically justified. Unification of small producers for their withdrawal to the wholesale electricity market should be accompanied by an economic analysis of the cost function of the united company. It is shown that in the short term the wholesale electricity market created in the first and second price zones is close to competitive, but in the long term there is a threat: this market may become uncompetitive.

scholarly journals Prosumers’ Behavior under a Regulation That Encourages Strict Self-Sufficiency. The Case of Spanish Photovoltaic Micro-Generation

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1114
Author(s):  
Pere Mir-Artigues ◽  
Pablo del Río
Keyword(s):  
Electricity Markets ◽  
Electricity Market ◽  
Specific Form ◽  
Economic Behavior ◽  
Distribution Grid ◽  
Self Sufficiency ◽  
Regulatory Limits ◽  
Regulatory Measures ◽  
Self Production ◽  
Municipal Level

The reduction of equipment costs encourages the diffusion of photovoltaic micro-generation, however, proper regulatory measures should be implemented to facilitate self-production dissemination and to promote the emergence of new electricity markets which integrate prosumers. The specific form of these markets will depend on the level of prosumers’ self-sufficiency and the type of grid to which they will be connected. Unfortunately, Spain has been an example of resistance to micro-generation deployment. However, some things have started to change recently, albeit only to a certain extent. This article explains the key elements of the latest regulation of photovoltaic micro-generation in Spain and, through a stylized model, describes the economic behavior of prosumers in such a regulatory framework. It is concluded that this regulation only encourages prosumer plants which are strictly focused on self-sufficiency because it discourages exports and limits capacities and this regulation discourages the smart renewal of the distribution grid because it prevents prosumers from participating in the electricity market. It is recommended that the aforementioned regulatory limits be removed and pilot experiences for the market participation of prosumers be promoted by creating the appropriate technical and regulatory conditions, for example, at the municipal level.

scholarly journals Electricity Markets during the Liberalization: The Case of a European Union Country

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4317
Author(s):  
Štefan Bojnec ◽  
Alan Križaj
Keyword(s):  
Electricity Markets ◽  
Electricity Market ◽  
Renewable Energy Sources ◽  
Primary Energy ◽  
Lessons Learned ◽  
Policy Implications ◽  
Daily Maximum ◽  
Energy Prices ◽  
Electricity Prices ◽  
Electricity Power

This paper analyzes electricity markets in Slovenia during the specific period of market deregulation and price liberalization. The drivers of electricity prices and electricity consumption are investigated. The Slovenian electricity markets are analyzed in relation with the European Energy Exchange (EEX) market. Associations between electricity prices on the one hand, and primary energy prices, variation in air temperature, daily maximum electricity power, and cross-border grid prices on the other hand, are analyzed separately for industrial and household consumers. Monthly data are used in a regression analysis during the period of Slovenia’s electricity market deregulation and price liberalization. Empirical results show that electricity prices achieved in the EEX market were significantly associated with primary energy prices. In Slovenia, the prices for daily maximum electricity power were significantly associated with electricity prices achieved on the EEX market. The increases in electricity prices for households, however, cannot be explained with developments in electricity prices on the EEX market. As the period analyzed is the stage of market deregulation and price liberalization, this can have important policy implications for the countries that still have regulated and monopolized electricity markets. Opening the electricity markets is expected to increase competition and reduce pressures for electricity price increases. However, the experiences and lessons learned among the countries following market deregulation and price liberalization are mixed. For industry, electricity prices affect cost competitiveness, while for households, electricity prices, through expenses, affect their welfare. A competitive and efficient electricity market should balance between suppliers’ and consumers’ market interests. With greening the energy markets and the development of the CO2 emission trading market, it is also important to encourage use of renewable energy sources.

scholarly journals Competition in Power Generation: Ex-ante Analysis of Indonesia’s Electricity Market

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6741
Author(s):  
Dzikri Firmansyah Hakam ◽  
Sudarso Kaderi Wiyono ◽  
Nanang Hariyanto
Keyword(s):  
Power System ◽  
Market Structure ◽  
Market Power ◽  
Electricity Markets ◽  
Electricity Market ◽  
Regulatory Reform ◽  
Optimal Number ◽  
Load Flow ◽  
Utility Company ◽  
Competitive Electricity Markets

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.

scholarly journals Decentralized Prosumer-Centric P2P Electricity Market Coordination with Grid Security

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4665
Author(s):  
Duarte Kazacos Winter ◽  
Rahul Khatri ◽  
Michael Schmidt
Keyword(s):  
Electricity Markets ◽  
Electricity Market ◽  
Power Flow ◽  
Power Plants ◽  
Optimal Power Flow ◽  
Free Market ◽  
Economic Value ◽  
New Paradigm ◽  
Grid Security ◽  
Virtual Power Plants

The increasing number of prosumers and the accompanying greater use of decentralised energy resources (DERs) bring new opportunities and challenges for the traditional electricity systems and the electricity markets. Microgrids, virtual power plants (VPPs), peer-to-peer (P2P) trading and federated power plants (FPPs) propose different schemes for prosumer coordination and have the potential of becoming the new paradigm of electricity market and power system operation. This paper proposes a P2P trading scheme for energy communities that negotiates power flows between participating prosumers with insufficient renewable power supply and prosumers with surplus supply in such a way that the community welfare is maximized while avoiding critical grid conditions. For this purpose, the proposed scheme is based on an Optimal Power Flow (OPF) problem with a Multi-Bilateral Economic Dispatch (MBED) formulation as an objective function. The solution is realized in a fully decentralized manner on the basis of the Relaxed Consensus + Innovations (RCI) algorithm. Network security is ensured by a tariff-based system organized by a network agent that makes use of product differentiation capabilities of the RCI algorithm. It is found that the proposed mechanism accurately finds and prevents hazardous network operations, such as over-voltage in grid buses, while successfully providing economic value to prosumers’ renewable generation within the scope of a P2P, free market.

scholarly journals Credible Peer-to-Peer Trading with Double-Layer Energy Blockchain Network in Distributed Electricity Markets

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1815
Author(s):  
Longze Wang ◽  
Yu Xie ◽  
Delong Zhang ◽  
Jinxin Liu ◽  
Siyu Jiang ◽  
...  
Keyword(s):  
Double Layer ◽  
Electricity Markets ◽  
Electricity Market ◽  
Peer To Peer ◽  
Malicious Nodes ◽  
Energy Trading ◽  
Contract Performance ◽  
Trading Model ◽  
Consensus Information ◽  
Available Information

Blockchain-based peer-to-peer (P2P) energy trading is one of the most viable solutions to incentivize prosumers in distributed electricity markets. However, P2P energy trading through an open-end blockchain network is not conducive to mutual credit and the privacy protection of stakeholders. Therefore, improving the credibility of P2P energy trading is an urgent problem for distributed electricity markets. In this paper, a novel double-layer energy blockchain network is proposed that stores private trading data separately from publicly available information. This blockchain network is based on optimized cross-chain interoperability technology and fully considers the special attributes of energy trading. Firstly, an optimized ring mapping encryption algorithm is designed to resist malicious nodes. Secondly, a consensus verification subgroup is built according to contract performance, consensus participation and trading enthusiasm. This subgroup verifies the consensus information through the credit-threshold digital signature. Thirdly, an energy trading model is embedded in the blockchain network, featuring dynamic bidding and credit incentives. Finally, the Erenhot distributed electricity market in China is utilized for example analysis, which demonstrates the proposed method could improve the credibility of P2P trading and realize effective supervision.

scholarly journals Prosumer Community Portfolio Optimization via Aggregator: The Case of the Iberian Electricity Market and Portuguese Retail Market

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3747
Author(s):  
Ricardo Faia ◽  
Tiago Pinto ◽  
Zita Vale ◽  
Juan Manuel Corchado
Keyword(s):  
Portfolio Optimization ◽  
Electricity Markets ◽  
Electricity Market ◽  
Retail Market ◽  
Wholesale Market ◽  
Generation Capacity ◽  
Wholesale Electricity Market ◽  
Portfolio Optimization Model ◽  
Photovoltaic Generators

The participation of household prosumers in wholesale electricity markets is very limited, considering the minimum participation limit imposed by most market participation rules. The generation capacity of households has been increasing since the installation of distributed generation from renewable sources in their facilities brings advantages for themselves and the system. Due to the growth of self-consumption, network operators have been putting aside the purchase of electricity from households, and there has been a reduction in the price of these transactions. This paper proposes an innovative model that uses the aggregation of households to reach the minimum limits of electricity volume needed to participate in the wholesale market. In this way, the Aggregator represents the community of households in market sales and purchases. An electricity transactions portfolio optimization model is proposed to enable the Aggregator reaching the decisions on which markets to participate to maximize the market negotiation outcomes, considering the day-ahead market, intra-day market, and retail market. A case study is presented, considering the Iberian wholesale electricity market and the Portuguese retail market. A community of 50 prosumers equipped with photovoltaic generators and individual storage systems is used to carry out the experiments. A cost reduction of 6–11% is achieved when the community of households buys and sells electricity in the wholesale market through the Aggregator.

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