5,033 results on '"Electricity Market"'
Search Results
2. Bidding strategy for wireless charging roads with energy storage in real-time electricity markets
- Author
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Shi, Jie, Yu, Nanpeng, and Gao, H Oliver
- Subjects
Civil Engineering ,Engineering ,Affordable and Clean Energy ,Electric vehicle ,Energy storage system ,Wireless charging road ,Point queue model ,Electricity market ,Demand bid ,Optimal power flow ,Model predictive control ,Locational marginal price forecasting ,Economics ,Energy ,Built environment and design - Published
- 2022
3. Project developer options to enhance the value of solar electricity as solar and storage penetrations increase
- Author
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Kim, James Hyungkwan, Mills, AD, Wiser, R, Bolinger, M, Gorman, W, Crespo Montañes, C, and O'Shaughnessy, E
- Subjects
Photovoltaics ,Energy storage ,Electricity market ,Ancillary service ,Renewable penetration ,Energy ,Engineering ,Economics - Abstract
Increasing the penetration of photovoltaics (PV) reduces the marginal grid value of PV electricity. The declining grid value of PV with higher penetration could limit the technology's economic attractiveness and future demand. Various strategies have been proposed for preserving this value. Using a consistent framework, we analyze the net value (accounting for both cost and grid value) of more than ten strategies in the United States. Here, grid value is estimated from coincident wholesale power market prices and PV generation using observed historical prices or modeled future prices with up to 30% PV penetration. We find that established and emerging strategies designed to shift the timing of standalone PV generation at the expense of total generation—including orienting monofacial PV modules west or bifacial modules vertically—result in minor net-value benefits or penalties. Adding energy storage to such systems magnifies the net-value loss, because configurations that change the timing of PV production become redundant when the energy-shifting capabilities of storage are added. The largest net-value gains come from strategies that maximize generation (solar tracking plus oversized PV arrays) in conjunction with storage, especially at high PV penetrations. PV systems are long-lived assets. Our results suggest that efforts to promote generation-maximizing strategies today may yield increasing net-value benefits as PV and storage deployments continue to accelerate in the United States over the coming decades.
- Published
- 2021
4. Frequency regulation service provision in data center with computational flexibility
- Author
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Wang, Wei, Abdolrashidi, Amirali, Yu, Nanpeng, and Wong, Daniel
- Subjects
Engineering ,Electrical Engineering ,Patient Safety ,Affordable and Clean Energy ,Data center ,Deep sleep state ,Electricity market ,Frequency regulation ,Economics ,Energy ,Built environment and design - Abstract
The rapid adoption of cloud storage and computing services led to unprecedented growth of data centers in the world. As bulk energy consumers, large-scale data centers in the U.S. rack up billions in electricity costs annually. Fortunately, the operational flexibility of data centers can be leveraged to provide valuable frequency regulation services in smart grids to mitigate the indeterminacy of the renewable generation resources. Specifically, this paper aims to leverage computational flexibility provided by servers, such as dynamic voltage frequency scaling and dummy loads. This paper develops a comprehensive framework for data center's frequency regulation service provision in both hour-ahead market and real-time operations. A risk constrained hour-ahead bidding strategy along with a real-time data center power consumption control algorithm are developed to minimize electricity bills and the total response time of the requests. The introduction of dummy load, realistic bi-linear server power consumption model, and probabilistic forecast of electricity and frequency regulation service prices enable the data center to accurately follow frequency regulation signals, while reducing the financial risks associated with electricity market participation. The simulation results show that the proposed frequency regulation provision framework results not only in significant cost reduction for data centers, but also limits degradation in quality of service. Meanwhile, the stability and reliability of a power grid will be improved by the frequency regulation service provision.
- Published
- 2019
5. Frequency regulation service provision in data center with computational flexibility
- Author
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Wang, W, Abdolrashidi, A, Yu, N, and Wong, D
- Subjects
Data center ,Deep sleep state ,Electricity market ,Frequency regulation ,Patient Safety ,Energy ,Engineering ,Economics - Abstract
The rapid adoption of cloud storage and computing services led to unprecedented growth of data centers in the world. As bulk energy consumers, large-scale data centers in the U.S. rack up billions in electricity costs annually. Fortunately, the operational flexibility of data centers can be leveraged to provide valuable frequency regulation services in smart grids to mitigate the indeterminacy of the renewable generation resources. Specifically, this paper aims to leverage computational flexibility provided by servers, such as dynamic voltage frequency scaling and dummy loads. This paper develops a comprehensive framework for data center's frequency regulation service provision in both hour-ahead market and real-time operations. A risk constrained hour-ahead bidding strategy along with a real-time data center power consumption control algorithm are developed to minimize electricity bills and the total response time of the requests. The introduction of dummy load, realistic bi-linear server power consumption model, and probabilistic forecast of electricity and frequency regulation service prices enable the data center to accurately follow frequency regulation signals, while reducing the financial risks associated with electricity market participation. The simulation results show that the proposed frequency regulation provision framework results not only in significant cost reduction for data centers, but also limits degradation in quality of service. Meanwhile, the stability and reliability of a power grid will be improved by the frequency regulation service provision.
- Published
- 2019
6. Economic and carbon emission impacts of electricity market transition in China: A case study of Guangdong Province
- Author
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Lin, J, Kahrl, F, Yuan, J, Chen, Q, and Liu, X
- Subjects
Electricity market ,Power sector reform ,China ,Environment ,Carbon pricing ,Engineering ,Economics ,Energy - Abstract
China's electricity system is the world's largest, in terms of installed generating capacity, and is also the world's largest single source of greenhouse gas emissions. In 2015, China embarked on reforms in its electricity sector that aim to introduce market mechanisms in wholesale pricing. This study provides a quantitative assessment of the economic and carbon dioxide (CO2) emission impacts of transitioning to electricity markets in China, focusing on Guangdong Province. We find that market reforms deliver significant annual cost savings (21 to 63 billion yuan, 9%–27% reduction in total costs in a base case) to consumers in Guangdong, with smaller production cost savings (12 billion yuan, 13% reduction in production costs in a base case). Savings for consumers are accompanied by a large reduction in net revenues for coal and natural gas generators, raising concerns about generator solvency, longer-term resource adequacy, and the need for transition mechanisms. Market reforms increase CO2 emissions in Guangdong, as a result of gas-to-coal switching, though higher hydropower imports from neighboring provinces could offset these emissions. CO2 pricing has a limited impact on CO2 emissions in the short run and has the potential to lead to significant wealth transfers. The most important benefit of market reforms will be in providing an economic framework for longer-term operations and investment.
- Published
- 2019
7. Economic and carbon emission impacts of electricity market transition in China: A case study of Guangdong Province
- Author
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Lin, Jiang, Kahrl, Fredrich, Yuan, Jiahai, Chen, Qixin, and Liu, Xu
- Subjects
Affordable and Clean Energy ,Climate Action ,Electricity market ,Power sector reform ,China ,Environment ,Carbon pricing ,Engineering ,Economics ,Energy - Abstract
China's electricity system is the world's largest, in terms of installed generating capacity, and is also the world's largest single source of greenhouse gas emissions. In 2015, China embarked on reforms in its electricity sector that aim to introduce market mechanisms in wholesale pricing. This study provides a quantitative assessment of the economic and carbon dioxide (CO2) emission impacts of transitioning to electricity markets in China, focusing on Guangdong Province. We find that market reforms deliver significant annual cost savings (21 to 63 billion yuan, 9%–27% reduction in total costs in a base case) to consumers in Guangdong, with smaller production cost savings (12 billion yuan, 13% reduction in production costs in a base case). Savings for consumers are accompanied by a large reduction in net revenues for coal and natural gas generators, raising concerns about generator solvency, longer-term resource adequacy, and the need for transition mechanisms. Market reforms increase CO2 emissions in Guangdong, as a result of gas-to-coal switching, though higher hydropower imports from neighboring provinces could offset these emissions. CO2 pricing has a limited impact on CO2 emissions in the short run and has the potential to lead to significant wealth transfers. The most important benefit of market reforms will be in providing an economic framework for longer-term operations and investment.
- Published
- 2019
8. A spatially and temporally resolved model of the electricity grid - Economic vs environmental dispatch
- Author
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Razeghi, Ghazal, Brouwer, Jack, and Samuelsen, Scott
- Subjects
Unit commitment ,Resource dispatch ,Grid design ,Grid emissions ,Electricity price ,Electricity market ,Energy ,Engineering ,Economics - Published
- 2016
9. Essays on Electricity Markets in Presence of Strategic Prosumers
- Author
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Ramyar, Sepehr
- Subjects
Information science ,Economics ,Energy ,electricity market ,game theory ,market design ,optimization ,prosumer - Abstract
Prosumers, with the ability to act both as a supplier and a consumer in a power market, have received considerable attention recently. Having distributed energy resources, their capability to operate in an isolated mode, separated from the main grid, has also been promoted as a vital option to enhance the power system's resilience. One emerging concern is the prosumer's ability to manipulate the power market as a buyer or as a seller. This thesis vets the outcomes of a power market in presence of strategic prosumers and formulates electricity markets in different frameworks depending on the prosumer's strategy to obtain the equilibria representing the market outcome.This thesis posits a situation in which a strategic prosumer owns a renewable unit with variant output and a dispatchable backup unit, and participates in a power market following a price-taker, quantity-based, or Stackelberg strategy. The prosumer is assumed to maximize its benefit by deciding amount of power to buy from or sell into the main grid, amount of renewable power to forego consumption, and amount of power to produce from backup unit. The interaction of prosumers and the main grid is modeled through shifting the residual supply curve in the wholesale market, thereby avoiding the possible numerical issues when aggregating their demand horizontally with consumers. The model is applied to a case study of the IEEE 24-bus RTS as an illustrative example. Prosumers in the market are also subject to uncertain renewable output and, as they participate in the day-ahead market, decide how much energy to consume, sell, or purchase, considering the potential imbalance due to uncertain output. The question of prosumer's risk preferences, taking into account the uncertainty in its renewable output, is investigated and the dynamics between prosumer's risk decisions and its implications for the prosumer's profit maximization are examined in a chance-constrained framework.This thesis illustrates power market outcomes in presence of strategic prosumers following price-taker, quantity-based, and Stackelberg strategies exercised by the prosumer and shows existence of market-clearing equilibria in the case of perfect and imperfect competition and demonstrate that the prosumer's position in the market does not depend on its strategy along with the fact that the prosumer is able to attain higher pay-off in the price-taker case compared to the quantity-based strategy. This thesis also shows the impact of prosumer's Stackelberg strategy on rent distribution and price formation in the marketplace in a chance-constrained framework to account for uncertainty of its renewable output. Finally, the thesis investigates prosumer risk attitudes and quantifies the impact of renewable output uncertainty and imbalance prices on prosumer's risk preferences.
- Published
- 2022
10. Continuous Group-Wise Double Auction for Prosumers in Distribution-Level Markets.
- Author
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Yu, Ankun, Tang, Xiaoying, Zhang, Ying Jun, and Huang, Jianwei
- Abstract
With the increasingly high penetration of distributed energy resources (DERs), more consumers with the capability of producing energy (hence called prosumers) appear in the electricity distribution network. Different from conventional consumers, prosumers are allowed to trade their energy with the power grid to generate income. To facilitate the active participation of prosumers in the distribution-level market, we develop a continuous group-wise double auction (CGDA) mechanism to coordinate the energy transactions among prosumers. In particular, the prosumers submit continuous double-sided bids to describe their cost-minimizing buying and selling strategies at different market prices. A distribution system operator (DSO), acting as the auctioneer, decides the clearing prices, the clearing power quantities, and the rewards for all prosumers. We prove that the proposed CGDA mechanism achieves several desirable economic properties, including truthfulness, individual rationality, weakly balanced budget, and asymptotic efficiency. We further demonstrate the superior performance of the proposed mechanism compared with other benchmarks through extensive simulations. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
11. Can Forward Commodity Markets Improve Spot Market Performance? Evidence from Wholesale Electricity
- Author
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Frank A. Wolak and Akshaya Jha
- Subjects
Transaction cost ,History ,Spot contract ,Polymers and Plastics ,business.industry ,Commodity ,Spot market ,Monetary economics ,Industrial and Manufacturing Engineering ,Information aggregation ,Economics ,Production (economics) ,Electricity market ,Electricity ,Business and International Management ,business ,General Economics, Econometrics and Finance - Abstract
Forward markets are believed to aggregate information about future spot prices and reduce the cost of producing the commodity. We develop a measure of the extent to which forward and spot prices agree in markets with transaction costs. Using this measure, we show that day-ahead prices better reflect real-time prices at all locations in California’s electricity market after the introduction of financial trading. We then present evidence suggesting that operating costs and input fuel use fell after the introduction of financial trading on days when the nonconvexities inherent to the production and transmission of electricity are especially relevant. (JEL D23, D24, G13, L94, L98, Q48)
- Published
- 2023
- Full Text
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12. Workload Transfer Strategy of Urban Neighboring Data Centers With Market Power in Local Electricity Market.
- Author
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Sun, Jun, Chen, Minghua, Liu, Haoyang, Yang, Qinmin, and Yang, Zaiyue
- Abstract
This paper investigates how to minimize the operational cost of cloud service provider (CSP) that operates urban neighboring data centers (DCs) in the same electricity market and can conduct workload transfer among DCs. Due to the substantial electricity demand of DCs, their market power which can have impact on the locational marginal prices (LMPs) of the electricity market should be taken into consideration. We formulate a bilinear bilevel problem which regards the CSP as a price maker and explores cost-minimizing workload transfer strategies. The upper level is the operational cost minimization problem of CSP and the lower level corresponds to the economic dispatch problem of independent system operator (ISO) of electricity market which determines the electricity prices. It is challenging to directly solve the bilevel problem with bilinear term in the objective function. Hence, we first reformulate the original problem into a single level problem and then based on the property of the problem we develop a polytope cutting algorithm that attains the global optimal solution. The proposed algorithm solves linear optimizations iteratively by cutting the non-convex polytope feasible set into convex sets. In addition, considering the varying communication environment in practice, we analyze the impact of transfer price uncertainty on total cost of CSP, and show that the expected cost surprisingly decreases with the increasing uncertainty. Simulations based on the standard IEEE test cases show that the cost of CSP is significantly reduced and a win-win result for both the CSP and independent system operator (ISO) is possible. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
13. Scenario-Based Economic Dispatch With Tunable Risk Levels in High-Renewable Power Systems.
- Author
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Modarresi, Mohammad Sadegh, Le Xie, Campi, Marco Claudio, Garatti, Simone, Care, Algo, Thatte, Anupam A., and Kumar, P. R.
- Subjects
- *
POWER resources , *SUPPLY & demand , *ECONOMIC structure , *TEST systems , *ROBUST optimization - Abstract
This paper introduces an empirical approach to dispatch resources in real-time power system operation with growing levels of uncertainties emerging from intermittent and distributed energy resources in the supply and the demand side. It is shown that by taking empirical data of specific sizes, the dispatch results can lead to a quantifiable and rigorous bound on the risk of violating constraints at the implementation stage. In particular, we formulate the look-ahead real-time economic dispatch problem using the scenario approach. This approach takes empirical data as input and guarantees a tunable probability of violating the constraints according to the input data size. By exploiting the structure of the economic dispatch, we show that in the absence of transmission constraints, the number of samples that is required by the theory does not grow with the size of the problem. In the more general case with transmission constraints, it is shown that the posterior bound on the risk of dispatch can be quantified and can be much smaller than the risk bound before solving the dispatch. Numerical examples based on a standard test system suggest that the scenario approach can provide a practically attractive solution with theoretically rigorous properties for risk-limiting power system operations. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
14. Incentive-Compatibility in a Two-Stage Stochastic Electricity Market With High Wind Power Penetration.
- Author
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Exizidis, Lazaros, Kazempour, Jalal, Papakonstantinou, Athanasios, Pinson, Pierre, De Greve, Zacharie, and Vallee, Francois
- Subjects
- *
WIND power , *ELECTRICITY , *BUDGET deficits , *MARGINAL pricing , *ECONOMIC efficiency - Abstract
A major restructuring of electricity markets takes place worldwide, pursuing maximum economic efficiency. In most modern electricity markets, including the widely adapted Locational Marginal Price (LMP) market, efficiency is only guaranteed under the assumption of perfect competition. Moreover, market design is heavily focused on deterministic conventional generation. Electricity markets, though, are vulnerable to strategic behaviors and challenged by the increased penetration of renewable energy generation. In this paper, we cope with the aforementioned bottlenecks by investigating the application of Vickrey–Clarke–Groves (VCG) auction in a two-stage stochastic electricity market. The VCG mechanism achieves incentive-compatibility by rewarding market participants for their contribution towards market efficiency, being attractive from both market operation and participants perspectives. Both traditional and VCG market-clearing approaches are explored and compared, investigating as well the impact of increasing wind power penetration. The main shortcoming of VCG, i.e., not ensuring revenue adequacy, is quantified in terms of market budget imbalance for various levels of wind power penetration. To this end, a novel ex-post budget redistribution scheme is proposed, which achieves to partially recover budget deficit. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
15. Hydrogen Storage Optimal Scheduling for Fuel Supply and Capacity-Based Demand Response Program Under Dynamic Hydrogen Pricing.
- Author
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El-Taweel, Nader A., Khani, Hadi, and Farag, Hany E. Z.
- Abstract
As the emerging technology offers more economic and efficient mechanisms for hydrogen production, fuel cell electric vehicles (FCEVs) are expected to be deployed more extensively in the near future. Proliferation of hydrogen fueling stations throughout the transportation network and justifying their economic viability are key factors to the success of the FCEVs. In today’s deregulated market environment, many governments are encouraging private investors to invest in key infrastructures including the hydrogen fueling stations. To that end, this paper proposes a new model for optimal scheduling of privately owned hydrogen storage stations to both serve the transport sector and the electricity market operator. The model mainly aims to: 1) exploit the lower electricity market prices to reduce the power purchase cost and 2) contribute to the capacity–based demand response program to further enhance the economic feasibility of the investment. The profitability constraints and dynamic hydrogen pricing mechanisms are incorporated into the optimization process to guarantee the economic feasibility of the investment. Through such constraints, hydrogen sale prices would dynamically change to maintain system profitability at the lowest possible hydrogen price. Numerical studies reveal that the stacked profit from the two aforementioned sources of revenue under the proposed model would lead to a stronger rate of return. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
16. Co-optimization of Energy and Reserve With Incentives to Wind Generation
- Author
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José A. Aguado, Yves Smeers, and Sebastian Martin
- Subjects
Mathematical optimization ,Optimization problem ,Wind power ,Reserve requirement ,business.industry ,Risk aversion ,Market clearing ,Fossil fuel ,Energy Engineering and Power Technology ,Electric power system ,Economics ,Electricity market ,Electrical and Electronic Engineering ,business - Abstract
Transitioning from fossil fuel dominated power systems to high penetrations of intermittent renewable generation is affecting classical electricity market designs. Here, a method is proposed to model and assess the absence of co-optimization of energy and reserve that prevails in the European system. Co-optimization is formulated through an optimization problem (COM), and its absence as an equilibrium problem (EQM) built on Karush-Kuhn-Tucker conditions of agents' optimization and market clearing equations. EQM cannot be reformulated as a single optimization problem. Market distortions are identified by comparing the complementarity conditions of both models. These are then discussed on system with Feed in Premium to wind generation. Parameters in the models allow to represent different market configurations regarding: available wind generation, Feed in Premium to wind, generators' risk aversion, and required reserve from wind generation.
- Published
- 2022
- Full Text
- View/download PDF
17. Prediction Markets for Probabilistic Forecasting of Renewable Energy Sources
- Author
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Paul Cuffe and Mahdieh Shamsi
- Subjects
Renewable Energy, Sustainability and the Environment ,business.industry ,Cumulative distribution function ,Probabilistic logic ,Economics ,Econometrics ,Electricity market ,Production (economics) ,Probabilistic forecasting ,Prediction market ,business ,Random variable ,Renewable energy - Abstract
This paper demonstrates how a binary prediction market is capable of achieving a probabilistic renewable energy forecast. In prediction markets, participants trade shares associated with the outcome of unknown future events (here, the renewable production, as a random variable), and the instantaneous price of shares represents the probability of the outcome. The focus of this study is to exploit this informational value of the prediction market price in renewable energy forecasting. To this end, in this paper three different methods of renewable probabilistic forecasting have been considered as the trading agents in a binary prediction market, the aggregated probability of the renewable output is elicited from the equilibrium price in this market and finally, the full cumulative distribution function of possible renewable output is extracted through regression analysis. The proposed method is applied to the test cases of three onshore wind farms in Australia. The simulation results suggest that the performance of the proposed method is superior to the individual models and forecasting is improved in terms of reduction in the electricity market imbalance costs.
- Published
- 2022
- Full Text
- View/download PDF
18. Electricity Market Liquidity and Price Spikes: Evidence from Hungary
- Author
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Olivér Hortay, Mátyás Bajai, and Attila András Víg
- Subjects
Strategy and Management ,General Engineering ,Economics ,General Social Sciences ,General Decision Sciences ,Electricity market ,Monetary economics ,Market liquidity - Abstract
This article examines how electricity market liquidity, renewable production and cross-border activity together in combination explain price spikes in the Hungarian Power Exchange day-ahead auctions. In the applied logit model, the dependent variable representing the price spike is binary, and the key explanatory variable is a modified bid-ask spread depicting liquidity. Weather-dependent renewable production and the difference between exports and imports appear as control variables in the model. The empirical analysis was based on data from 2017 and 2018. The results show that the control variables have no effect on the bid-ask spread and that the model explains 96 per cent of the spikes well, with an AUC-ROC of 0.75 and a Gini coefficient of 0.5. Based on the results, it may be worthwhile for traders to incorporate their data from sales and purchase curves into their forecasts, as this will improve their chances of successfully predicting extreme prices.
- Published
- 2022
- Full Text
- View/download PDF
19. Static hedging of weather and price risks in electricity markets
- Author
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Juan C. Vera, Javier Orlando Pantoja Robayo, Research Group: Operations Research, and Econometrics and Operations Research
- Subjects
Control and Optimization ,Aerospace Engineering ,Variable cost ,0502 economics and business ,Risk Mitigation ,Econometrics ,Economics ,Electricity market ,050207 economics ,Electrical and Electronic Engineering ,Hedge (finance) ,Fixed cost ,Civil and Structural Engineering ,Etymology of electricity ,050208 finance ,business.industry ,Mechanical Engineering ,05 social sciences ,Static Hedging ,Financial engineering ,Energy Markets ,Portfolio ,Electricity ,business ,Software ,Weather Hedging - Abstract
We present the closed-form solution to the problem of hedging price and quantity risks for energy retailers (ER), using financial instruments based on electricity price and weather indexes. Our model considers an ER who is intermediary in a regulated electricity market. ERs buy a fixed quantity of electricity at a variable cost and must serve a variable demand at a fixed cost. Thus ERs are subject to both price and quantity risks. To hedge such risks, an ER could construct a portfolio of financial instruments based on price and weather indexes. We construct the closed form solution for the optimal portfolio for the mean-VaR model in the discrete setting. Our model does not make any distributional assumption.
- Published
- 2021
- Full Text
- View/download PDF
20. Market‐Wide Impact of Renewables on Electricity Prices in Australia*
- Author
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Ricardo Gonçalves and Flavio M. Menezes
- Subjects
Economics and Econometrics ,Daily production ,business.industry ,Long period ,Economics ,Renewable generation ,Production (economics) ,Electricity market ,Distribution (economics) ,Electricity ,business ,Agricultural economics ,Renewable energy - Abstract
This paper estimates the market-wide impact of utility-scale renewables on Australia's National Electricity Market (NEM) wholesale prices from 2009 to 2020. The goal is to understand the medium-run impact of renewable generation, as opposed to the short-run impact of weather-driven changes in renewable output. The focus is, therefore, on the relationship between renewable generation (and its growth) and wholesale prices over a long period of time. In particular, we exploit the half-hourly nature of wholesale price setting in the NEM to uncover the impact of solar and wind daily production on the distribution of prices throughout the day. In contrast to the merit-order effect literature, which focuses on the short-run (contemporaneous) impact of renewables, our results suggest that the total daily solar production has a positive, although not always significant, impact on wholesale prices throughout the day during an early development stage of solar generation. For a more recent period, following a substantive increase in utility-scale solar generation, the results are more in line with the merit-order effect literature with total daily solar production reducing wholesale prices for most of the day. This impact, however, is of several orders of magnitude lower than that predicted in the literature. We also show that the daily production of wind has a small negative impact on wholesale prices for most of the day, throughout the entire period of analysis.
- Published
- 2021
- Full Text
- View/download PDF
21. OLIGOPOLY TRENDS IN ENERGY MARKETS: CAUSES, CRISIS OF COMPETITION, AND SECTORAL DEVELOPMENT STRATEGIES
- Author
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N. Hajiyev, M. Mansura, T. Vityutina, R. Safronov, and E. Sverdlikova
- Subjects
Liberalization ,Energy industries. Energy policy. Fuel trade ,Environmental sciences ,Oligopoly ,Competition (economics) ,Monopolistic competition ,General Energy ,Economics ,Electricity market ,media_common.cataloged_instance ,GE1-350 ,HD9502-9502.5 ,Energy market ,European union ,Cost of electricity by source ,General Economics, Econometrics and Finance ,Industrial organization ,media_common - Abstract
Uncertainty in the markets associated with COVID-19 created the need for choosing the optimal model of energy markets. At the current stage of energy markets development, oligopoly tendencies tend to prevail. The article discusses the problem of choosing an effective energy market model, using the example of the electricity market. The competitive energy market of the European Union (finalized with the adoption of the Third Energy Package) was chosen as the basic model, with which the energy markets of the Russian Federation and Azerbaijan are compared. The basic indicators of the EU market were defined and compared with similar indicators for the Russian and Azerbaijani markets. The article explored the main tendencies as well as deadweight losses for Russian and Azerbaijani markets. Recommendations for improving the competitiveness of the markets are developed. The study showed that the level of market competitiveness was directly associated with the economic security of the energy market. The ways of increasing market liberalization in Russia and Azerbaijan were proposed. The proposed gradual liberalization of electricity markets involves the transition from a closed monopolistic to an open competitive electricity market, changing the institutional structure, the search for new and effective mechanisms of interaction between the buyer and seller of electricity. It also creates an opportunity to improve the quality of electricity supply, increase the investment attractiveness of the sector at large, and reduce the cost of electricity.Keywords: degree of competition; electrical power; energy markets; European Union; market model.JEL Classifications: D43, D47DOI: https://doi.org/10.32479/ijeep.11634
- Published
- 2021
- Full Text
- View/download PDF
22. Analyzing the factors influencing the formation of the price of electricity in the deregulated markets of developing countries
- Author
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Nikola Milovic, Tamara Backovic, Zdenka Dragasevic, and Vladimir Djurisic
- Subjects
business.industry ,Regression model ,A dominant firm leadership model ,Energy policy ,Renewable energy sources ,Renewable energy ,Developing countries ,TK1-9971 ,General Energy ,Electricity generation ,Deregulated electricity market ,Economics ,Perfect competition ,Electricity market ,Energy market ,Electricity ,Electrical engineering. Electronics. Nuclear engineering ,business ,Monopoly ,Industrial organization - Abstract
The aim of this paper is to measure the impact of certain factors on the formation of the price of electricity, which is obtained from conventional and renewable energy sources, in the deregulated markets of developing countries, such as Montenegro. Another goal is to identify and analyze the criteria that can lead to a change in the electricity market structure. This study was especially inspired by the fact that no similar research has been conducted in this domain, according to the authors’ knowledge. A regression model is applied in the paper, which can be used to display the fluctuation of electricity prices based on the analyzed factors. In addition to price as a dependent variable, the model also examined eight factors that are independent variables. Apart from the basic model, another model has been formulated which, in addition to a price as dependent variable and the examined factors, also takes into consideration the production of electricity from renewable sources. The results of the research showed that an increase in the amount of electricity produced will lead to a slight increase in price, which is to be expected considering there is still one large producer servicing the market, which, despite the deregulation of the market, still has significant monopoly power. The generation of electricity by small hydropower plants will not significantly affect price change, and these entities will behave as if they were in a market of perfect competition. Further opening up the market to new competitors would lead to a fall in the price of electricity. Based on the predicted capacity of electricity generation from small hydropower plants, the electricity deficit could be reduced; in another words it could lead to the reduction of imports. Based on the results of the study, energy policy makers will be able to adopt informed strategies and make decisions related to developments in the energy market, most notably the creation of a common EU energy market. Also, the results of the conducted research expand the theoretical body of work dealing with the determination of the price of electricity. Future studies could address the issue of using natural potential for the generation of electricity from renewable sources, such as solar energy, wind energy and other sources.
- Published
- 2021
23. Efeito do Incremento da Produção de Energias Renováveis Intermitentes nos Preços da Eletricidade
- Author
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Blandina C. R. Oliveira and Adelino Fortunato
- Subjects
Natural resource economics ,business.industry ,Electricity price ,Retail market ,Economics ,Electricity market ,Electricity ,business ,Literature survey ,Electricity retailing ,Renewable energy - Abstract
Despite increasing deployment of intermittent renewable energies at lower generation costs, wholesale electricity price has been falling while retail electricity prices go up. This has triggered the debate on the cost-effectiveness of this source of energy. Therefore, the aim of this paper is to present a literature survey on the effect of intermittent renewable energy generation on electricity prices. Researches have used different methodological approaches, different periods and countries to examine the impacts of intermittent renewable energy on electricity prices. Most of the studies found evidence of the merit-order effect, which means that an increase in intermittent source generation would reduce the spot electricity market price. Finally, the few studies that address the retail market found that retail electricity could either increase or decrease.
- Published
- 2021
- Full Text
- View/download PDF
24. Wind and Solar Power Integration in Electricity Markets and Distribution Networks Through Service-Centric Virtual Power Plants.
- Author
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Koraki, Despina and Strunz, Kai
- Subjects
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SOLAR energy , *WIND power , *POWER plants , *ENERGY economics , *ELECTRIC rates , *CONGESTION pricing , *ECONOMICS - Abstract
A virtual power plant (VPP) is formulated and developed as a service-centric aggregator that enables the market integration of distributed energy resources and simultaneously supports cooperation with the distribution system operator in addressing the issue of network usage. A suitable schedule of interactions and communications between aggregators, market operators, system operators, generators, and consumers, regarding electricity market participation and network operation is proposed and presented in a sequence diagram. The cooperation on congestion management in the distribution network is highlighted as a solution to relieve network constraints via the optimal adjustment of active and reactive power of VPP resources while maximizing renewable energy integration across the pool under management. The VPP reduces uncertainty affiliated with input data by employing the latest forecasts through a rolling horizon approach in the planning stage. Thanks to the flexibility of the VPP to perform rescheduling in accordance with agreements it negotiated with its resources, it becomes possible to refrain from undesirable curtailments. Both the market-integrative and the service-centric roles of the VPP are verified through modeling and simulation with a benchmark European distribution network. The results confirm the added value of the proposed VPP in enhancing the integration of wind and solar power. [ABSTRACT FROM PUBLISHER]
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- 2018
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25. Strategic Behavior of Multi-Energy Players in Electricity Markets as Aggregators of Demand Side Resources Using a Bi-Level Approach.
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Yazdani-Damavandi, Maziar, Neyestani, Nilufar, Shafie-khah, Miadreza, Contreras, Javier, and Catalao, Joao P. S.
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- *
ELECTRICITY , *ENERGY economics , *ENERGY demand management , *DECISION making , *ECONOMIC equilibrium , *ECONOMICS - Abstract
The coordination of various energy vectors under the concept of multi-energy system (MES) has introduced new sources of operational flexibility to system managers. In this paper, the behavior of multi-energy players (MEP) who can trade with more than one energy carrier to maximize their profits and mitigate their operational risks has been investigated. The MES is represented based on a multilayer structure, namely the energy market, MEP, the local energy system (LES), and multi-energy demand. In such environment, an MEP aggregates LES and participates in the wholesale electricity market, simultaneously to maximize its profit. The decision-making conflict of the MEP with other energy players for the aggregation of LES and participation in the electricity market is modeled based on a bilevel approach. Numerical results show the behavior of the MEP as a prosumer in the electricity market to produce smoother demand and price profiles. Results reveal a mutual effect of local and wholesale equilibrium prices by increasing the share of the MEP. [ABSTRACT FROM PUBLISHER]
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- 2018
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26. Dayahead Electricity Pricing for a Heterogeneous Microgrid Under Arbitrary Utility and Cost Structures.
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Dalkilic, Ozgur, Candogan, Ozan, and Eryilmaz, Atilla
- Abstract
In this paper, we consider the dayahead load and supply allocation problem in an electrical microgrid, which consists of a system manager, consumers, and suppliers. We do not impose any mathematical, operational, and economic assumptions on the consumers and suppliers other than restricting them to have a finite number of load and supply schedules. For example, a consumer can have arbitrary forms of flexibilities in its demand, such as deferrability or intermittence, and the user can choose from a set of predetermined load allocations that represent these flexibilities. Thus, our system model can accommodate heterogeneous user requirements and constraints in the same problem formulation. Under this system model, we formulate a welfare maximization problem, and derive a distributed primal–dual pricing algorithm. In our algorithm, the system manager generates prices for the load and supply allocations of the users, and given these prices, the users independently choose the schedules to their best operational and economic interests. Furthermore, the pricing algorithm incentivizes the users so that their decisions benefit the system performance, and it achieves the optimal load and supply allocation. Finally, we study the algorithm’s performance via simulations and demonstrate how the demand-side flexibilities are utilized for the system’s benefit. [ABSTRACT FROM PUBLISHER]
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- 2018
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27. Do Renewables Drive Coal-Fired Generation Out of Electricity Markets?
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Ramteen Sioshansi and Kenjiro Yagi
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Renewable Energy, Sustainability and the Environment ,business.industry ,Natural resource economics ,020209 energy ,05 social sciences ,Energy Engineering and Power Technology ,02 engineering and technology ,Coal fired ,complex mixtures ,7. Clean energy ,Renewable energy ,Fuel Technology ,13. Climate action ,0502 economics and business ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Electricity market ,Profitability index ,Electricity ,business ,Engineering (miscellaneous) ,health care economics and organizations ,050205 econometrics - Abstract
Coal-fired generation is being retired in many regions. Some argue that these retirements are exacerbated by renewable–generation policy supports. Based on these claims, there are suggestions that renewable supports be phased-out or that coal-fired generators receive their own supports. Given the inherent policy implications, we examine the impacts of renewable–energy supports and other market changes (e.g., low natural–gas prices and carbon policy) on generator profitability. Renewable–energy policy supports can affect negatively the economics of coal-fired generators. However, empirical analyses in the literature find that the main contributor to declining coal-fired generation is low natural-gas prices. To investigate these findings further, we analyze a case study that is based on Japan’s wholesale electricity market. Through this case study, we examine the relative impacts of renewable–energy and other policy and market changes on the economics of coal-fired generation. Renewable–energy policy can impact the financial viability of coal-fired generators. However, natural-gas-price decreases have a much greater impact on the profitability of coal-fired generators than renewables do at current penetration levels.
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- 2021
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28. A Prediction Market Trading Strategy to Hedge Financial Risks of Wind Power Producers in Electricity Markets
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Paul Cuffe and Mahdieh Shamsi
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Wind power ,business.industry ,Financial risk ,Energy Engineering and Power Technology ,Future value ,Prediction market ,Microeconomics ,Economics ,Position (finance) ,Electricity market ,Trading strategy ,Electrical and Electronic Engineering ,Hedge (finance) ,business - Abstract
Accepted for IEEE Transactions on Power SystemsAbstract:Wind power producers participating in day-ahead electricity markets are compelled to pay imbalance costs if they do not generate the same amount of power as they had bid for. These imbalance costs comprise a significant proportion of their income. To reduce the risk of such financial losses, this paper employs the idea of trading in a separate prediction market, as a hedging method. In prediction markets, participants trade shares associated with a certain outcome of an event. We propose that the wind power producers might participate in a prediction market to trade the future value of the wind power and by taking an opposite position in comparison to the electricity market, the imbalance costs will be offset through payouts in the prediction market. Wind power is modelled as a stochastic variable and an optimal trading strategy is developed where the trading volume in the prediction market is analytically derived and formulated by minimising the maximum possible loss and pricing of shares is determined via indifference utility condition. The results suggest that the proposed method limits the loss values and improves the risk measures.
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- 2021
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29. Turkey's Electricity Market Current Situation and Alternative Policy Recommendations
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İlknur Yeşim Dinçel
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Finance ,business.industry ,Economics ,Electricity market ,Current (fluid) ,business - Published
- 2021
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30. Electricity spot price modeling by multi-factor uncertain process: a case study from the Nordic region
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Idin Noorani, Waichon Lio, and Farshid Mehrdoust
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Spot contract ,Liberalization ,Stochastic modelling ,Process (engineering) ,business.industry ,Uncertain theory ,Theoretical Computer Science ,Moment (mathematics) ,Multi-factor model ,Electricity market ,Moment estimations ,Economics ,Econometrics ,Energy market ,Geometry and Topology ,Electricity ,business ,Software ,Foundations - Abstract
In recent years, the liberalization of energy markets (especially electricity) by many countries has led to much attention being paid to their modeling. The energy market modeling under the framework of probability theory is valuable when the distribution function is close enough to the actual frequency. However, due to the complexity and variability of the world, economic reasons and changing government policies, this assumption is not applicable in some cases. Under such circumstances, we propose an uncertain two-factor model based on uncertain differential equations to evaluate the electricity spot price dynamics. Then, several essential indicators of electricity are investigated and generalized moment estimation for unknown parameters is also provided. Two case studies by using electricity data from the Oslo and Stockholm regions illustrate our approach. We also compare the proposed model with one-factor uncertain model driven by Liu process and the electricity stochastic model. A detailed numerical study illustrates the efficiency of the proposed model to evaluate electricity spot prices.
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- 2021
31. Analysis of futures and spot electricity markets under risk aversion
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Carlos Ruiz and Fernando S. Oliveira
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050210 logistics & transportation ,021103 operations research ,Information Systems and Management ,Spot contract ,General Computer Science ,05 social sciences ,0211 other engineering and technologies ,Spot market ,02 engineering and technology ,Management Science and Operations Research ,Cournot competition ,Industrial and Manufacturing Engineering ,Expected shortfall ,Modeling and Simulation ,0502 economics and business ,Econometrics ,Economics ,Forward curve ,Electricity market ,Market power ,Futures contract - Abstract
We analyze the procurement problem in the electricity supply chain, focusing on the interaction between futures and spot prices. The supply chain network analyzed in our study includes risk-averse generators and retailers, both with the ability to use conditional value at risk (CV@R) in their decision processes. In this supply chain, the futures price is computed to clear the futures market, without imposing the constraint that the expected spot price equals the futures price. As major methodological contributions: we compute the Nash equilibrium of the problem using CV@R and considering conjectural variations; we derive analytical relationships between the futures and the spot market outcomes and study the implications of demand and marginal cost uncertainty, as well as the level of the players’ risk aversion, on market equilibrium; we introduce the concept of risk-adjusted expectation to derive the futures market price as a function of the players’ expected losses or profits in the spot market; and we use consistent spot and wholesale price derivatives to calculate the players’ reaction functions. Finally, we illustrate our model with several numerical examples in the context of the Spanish electricity market, studying how the shape of the forward curve and the relationship between spot and futures prices depend on seasonality, risk aversion, generators’ market power, and hydrological resources. Surprisingly we observed that risk aversion increases the profit and reduces firms’ risk, and that the consumer utility is higher in the scenarios in which retailers behave a la Cournot in the wholesale market.
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- 2021
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32. Estimating the Benefit from Independent Aggregation in the Day-Ahead Market
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Zane Broka and Karlis Baltputnis
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Physics ,QC1-999 ,020209 energy ,020208 electrical & electronic engineering ,aggregation ,02 engineering and technology ,day-ahead market price ,Compensation (engineering) ,compensation ,Demand response ,demand response ,electricity market ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Econometrics ,Electricity market - Abstract
As the EU countries are working on adapting the Electricity Directive to allow independent aggregation (IA) of demand response (DR) in all the electricity markets, this paper provides an assessment of potential benefits from DR in the day-ahead market, which has proven particularly challenging for the IA regulatory framework development. The model devised in this study uses data of the public wholesale market price curve from the Nord Pool power exchange to simulate market clearing results with introduction of certain amounts of DR that, via independent aggregation, competes alongside generation and is able to shift the supply curve. The simulated new market equilibrium point allows estimating price reduction capability of demand response, the total system-wide benefits, as well as analysing the potential remuneration mechanisms for independent aggregators and implications on their business models. While the results demonstrated a high value from DR during the peak hours, the overall benefits during average price periods were rather low, thus exposing the unpredictability of the revenue stream and questioning the business case for IA in the day-ahead market. The proposed approach can be used for further analysis of different IA compensation mechanisms, considering the system-wide benefits it brings to the wholesale market.
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- 2021
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33. Competition in the Italian electricity market: The unforeseen social welfare losses of reform
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Maria Chiara D'Errico
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Economics and Econometrics ,Renewable Energy, Sustainability and the Environment ,market power ,020209 energy ,05 social sciences ,electricity market, market power, oligopoly, oligopsony, social welfare loss ,02 engineering and technology ,Management, Monitoring, Policy and Law ,Competitive equilibrium ,Supply and demand ,Oligopoly ,Market economy ,Order (exchange) ,oligopsony ,0502 economics and business ,electricity market ,oligopoly ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Electricity market ,Perfect competition ,Market power ,social welfare loss ,050207 economics ,Electric power industry - Abstract
The worldwide wave of reforms investing power industry has created new challenges to both supply demand side management. After deregulation, electric utilities restructured their opera-tions from vertically integrated mechanisms to open market systems in order to establish a new competitive sector. Reform has involved also the Italian power sector, but competition, as lar-gely shown by the empirical literature particularly in the first years of reform, has been far to be reached, and the electricity markets has been characterized by conditions of oligopoly and exercise of market power. This paper aims to analyze welfare loss and deviation from the competitive equilibrium recorded in the day ahead Italian electricity market after the first wave of reforms was almost implemented. The study presents a theoretical and empirical model to construct a competitive equilibrium, estimating market power, both, on the supply and demand sides of the day ahead electricity market. Results show the effect of non-competitive equilibriums for the hourly markets in the period 2013-2014. In an ideal competitive market, prices would be lower than historical prices by about 2-5% and quantities would be higher by about 0.5-1%.
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- 2021
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34. Integration of non-conventional renewable energy and spot price of electricity: A counterfactual analysis for Colombia
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Alex Perez and John J. Garcia-Rendon
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Counterfactual thinking ,Spot contract ,060102 archaeology ,Renewable Energy, Sustainability and the Environment ,business.industry ,020209 energy ,06 humanities and the arts ,02 engineering and technology ,Energy transition ,Agricultural economics ,Renewable energy ,Merit order ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Electricity market ,0601 history and archaeology ,Electricity ,business ,Renewable resource - Abstract
Energy transition is prevalent nowadays, and Colombia is no exception to this phenomenon. Energy coming from non-conventional renewable resources is one of the main feature of this phenomenon. Consequently, this paper evaluates the impact of this new kind of renewable energy resource in the Colombian wholesale electricity market. This evaluation uses a counterfactual scenario based on a structural model of an energy firm’s behavior that offers 1000 MW in 2018. Our results suggest that the spot price decreases on average 12.75 COP$/kWh (4.31 US$/MWh) per day. We find that 6.75 COP$/kWh (2.28 US$/MWh) is due to the firms’ strategies, and 6 COP$/kWh (2.03 US$/MWh) is a merit order effect.
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- 2021
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35. Design of market liberalizing degree based on the evolutionary game bidding of generators
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Li Jing, Li Yongbo, Jiajun Tang, Li Yang, Li Yating, Chuan He, Zhemin Lin, Zhenzhi Lin, Xinyi Liu, Zhi Zhang, and Hanhan Qian
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Degree (graph theory) ,business.industry ,Generator bidding ,020209 energy ,Stable equilibrium ,Context (language use) ,02 engineering and technology ,Evolutionary game theory ,Bidding ,Power (physics) ,Microeconomics ,General Energy ,020401 chemical engineering ,Market stability ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Electricity market ,Profit model ,Electricity ,Market liberalizing degree (MLD) ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,0204 chemical engineering ,business ,lcsh:TK1-9971 - Abstract
The orderly release of electricity plan is an important measure for China’s electricity market reform which also lead to excessive pressure for coal power units caused by the low planned electricity quantity. Allowing high-priced units to participate in the market can effectively alleviate the market pressure. However, the participation of high-priced units in electricity market will have an impact on the declaration behavior of other generators. In this context, an evolutionary game model of bidding for two groups of generators considering the market liberalizing degree (MLD) is proposed. Above all, the profit model of two kinds of generators is proposed under two bidding strategies considering the MLD. On this basis, an evolutionary game model of generators’ bidding is built to qualitatively analyze the market equilibrium solution which is affected by the MLD coefficient. Thus, the expected evolutionary stable equilibrium of bidding can be formed spontaneously in electricity market by adjusting the MLD coefficient. The case studies are performed for demonstrating the proposed evolutionary game model of generators’ bidding, and simulation results show that different MLD and the initial state of bidding behavior of generators will influence the final evolutionary stable equilibrium of bidding market, and it also shown that the government can make the electricity market develop towards the expected state by adjusting MLD and supervising the bidding behavior of generators.
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- 2021
36. Forecasting Price Spikes in Electricity Markets
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Efthymios Stathakis, Theophilos Papadimitriou, and Periklis Gogas
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Support vector machine ,Economics and Econometrics ,Generalized Pareto distribution ,business.industry ,Commodity ,Econometrics ,Economics ,Electricity market ,Electricity ,business ,Extreme value theory ,Supply and demand ,Quantile - Abstract
Electricity markets are considered to be the most volatile amongst commodity markets. The non-storability of electricity and the need for instantaneous balancing of demand and supply can often cause extreme short-lived fluctuations in electricity prices. These fluctuations are termed price spikes. In this paper, we employ a multiclass Support Vector Machine (SVM) model to forecast the occurrence of price spikes in the German intraday electricity market. As price spikes, we define the prices that lie above the 95th quantile estimated by fitting a Generalized Pareto distribution in the innovation distribution of an AR-EGARCH model. The generalization ability of the model is tested in an out-of-the-sample dataset consisting of 4080 hours. Furthermore, we compare the performance of our best SVM model against Neural Networks (NNs) and Gradient Boosted Machines (GBMs).
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- 2021
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37. Analysis of the Fundamental Predictability of Prices in the British Balancing Market
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John Nkwoma Inekwe, Derek W. Bunn, and David MacGeehan
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Balancing market ,020209 energy ,Linear model ,Energy Engineering and Power Technology ,02 engineering and technology ,Demand forecasting ,Market risk ,Settlement (finance) ,0202 electrical engineering, electronic engineering, information engineering ,Econometrics ,Economics ,Electricity market ,Production (economics) ,Electrical and Electronic Engineering ,Predictability - Abstract
This research analyses the non-linear and complex effects of drivers of system imbalance prices in the GB electricity market. Unlike day-ahead prices, the balancing settlement prices are comparatively under-researched, yet their importance is growing with greater market risks. The fundamental drivers of these prices are analysed over 2016-2019. The result of a non-linear modelling approach reveals that system imbalance price exhibits a regime-switching behaviour, driven by weather and demand forecast errors, as well as other system effects. Surprisingly, balancing prices are predictable out of sample and a regime switching specification is more accurate than a linear model for prediction.
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- 2021
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38. Solar energy penetration and volatility transmission to electricity markets—An Australian perspective
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Abdul Rashid Abban and Mohammad Zahid Hasan
- Subjects
Natural gas prices ,Economics and Econometrics ,business.industry ,Natural resource economics ,Autoregressive conditional heteroskedasticity ,05 social sciences ,Economics, Econometrics and Finance (miscellaneous) ,0211 other engineering and technologies ,02 engineering and technology ,Solar energy ,Electricity generation ,0502 economics and business ,Economics ,Electricity market ,021108 energy ,Electricity ,050207 economics ,Volatility (finance) ,business ,Volatility transmission - Abstract
The contribution of solar energy to electricity production has intensified in recent years. In this study, we aim to measure the impact of higher solar penetration on electricity prices across regional and national electricity markets in Australia. Using daily data, we also estimate volatility transmission among the Australian electricity markets. Univariate and multivariate GARCH models are employed to achieve the objectives of the study. The results show that increasing solar penetration decreases electricity prices in the regional electricity markets of Queensland, South Australia and Tasmania. However, the results further reveal that the joint negative effect of solar energy on electricity prices is outweighed by the positive impact of natural gas prices. Finally, the findings show that there are many significant own-volatility and cross-volatility spillovers among the Australian electricity markets. Among the regional electricity markets, the New South Wales electricity market emerged as the most critical market in terms of cross volatility.
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- 2021
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39. Breaking Iron Triangles: Beliefs and Interests in Japanese Renewable Energy Policy
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Rie Watanabe
- Subjects
Liberalization ,business.industry ,020209 energy ,media_common.quotation_subject ,05 social sciences ,General Social Sciences ,02 engineering and technology ,Energy security ,Democracy ,0506 political science ,Renewable energy ,Iron triangle ,Empirical research ,Renewable portfolio standard ,050602 political science & public administration ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Electricity market ,Economic system ,business ,media_common - Abstract
This article analyses Japan’s renewable energy policy changes, with a focus on the interaction of multiple catalysts on changing positions, beliefs and interests of dominant-group members, and inducing non-incremental renewable policy changes (an innovative but less effective Renewable Portfolio Standard (RPS) in 2003 as well as a partial FIT for photovoltaics in 2009 and ultimately a more effective full-scale FIT to promote renewables in 2011). The examined multiple catalysts include the governing coalition change from the Liberal Democratic Party (LDP) to the Democratic Party of Japan (DPJ) in 2009 and four other catalysts (the oil crisis, climate change, electricity market liberalisation, and nuclear accidents) that relate to the values underlying Japan’s energy policymaking: energy security, environment, economic efficiency, and safety (3E+S). The article concludes that the latter four catalysts were critical in creating and expanding cleavages among dominant-group members over a long period sufficient to realise the introduction of RPS and a partial FIT, but not sufficient to introduce the full-scale FIT. The 3/11 disaster after the governing coalition change was indispensable to achieving a full-scale FIT as it affected dominant-group members’ interests in removing Kan Naoto from office, after Kan made the FIT law passage one of the conditions for his voluntary resignation. Based on the empirical study, this article also addresses one of the underexplored theoretical questions, the effects of and relationship between multiple catalysts in non-incremental policy change.
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- 2021
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40. ACCESSING THE EFFECT OF RENEWABLES ON THE WHOLESALE POWER MARKET
- Author
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Mohammad Nure Alam
- Subjects
lcsh:GE1-350 ,Wind power ,business.industry ,020209 energy ,02 engineering and technology ,Monetary economics ,010501 environmental sciences ,lcsh:HD9502-9502.5 ,01 natural sciences ,lcsh:Energy industries. Energy policy. Fuel trade ,Renewable energy ,General Energy ,Base load power plant ,Electricity generation ,0202 electrical engineering, electronic engineering, information engineering ,Market price ,Economics ,Electricity market ,Electricity ,Volatility (finance) ,business ,General Economics, Econometrics and Finance ,lcsh:Environmental sciences ,0105 earth and related environmental sciences - Abstract
The purpose of this paper is to examine how rising wind energy generation (in MWh) impact the wholesale power market’s volatility (in SEK) across four bidding regions in Sweden. Prior investigations show that though the increase in electricity production from wind energy lowers the average day-ahead electricity wholesale prices, however, uncertainty and volatility of market price could rise due to wind energy’s intermittent nature. This study results show that Swedish power market experiences higher price volatility in long-run frequency when the generation of wind electricity increases. The reason for this high and volatile electricity price might be found from inflexible baseload power generation. The paper further suggests that volatility in the Swedish power market could be increased due to ambitious renewable electricity target by the Swedish government. The analysis concludes by providing the evidence that further adjustment in regard to the energy and regulatory policies might foster the better integration of a higher share of renewables into the power system.Keywords: Renewable Electricity, Wind Energy, Electricity Market, Price Volatility, Regulatory PoliciesJEL Classification: Q470DOI: https://doi.org/10.32479/ijeep.10756
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- 2021
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41. Energy Market Liberalisation in Greece: Structures, Policy and Prospects
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Dimos Chatzinikolaou, Charis Vlados, and Foteini Kapaltzoglou
- Subjects
Sustainable development ,lcsh:GE1-350 ,Liberalization ,Context (language use) ,International economics ,Energy security ,lcsh:HD9502-9502.5 ,Energy policy ,lcsh:Energy industries. Energy policy. Fuel trade ,Monopolistic competition ,General Energy ,Economics ,Electricity market ,Energy market ,General Economics, Econometrics and Finance ,lcsh:Environmental sciences - Abstract
The ongoing regulatory transformation towards a single European electricity market started several years ago. The rationale of this transformation is that the liberalisation of monopolistic energy structures should lead to the building of sustainable and flexible energy ecosystems, through an energy policy that sets goals in line with the requirements of our epoch, such as sustainable development, energy security, and the promotion of renewable energy sources. In this context, the liberalisation of the electricity market in Greece is explored, which is a complicated case in terms of development as it has only recently begun to exit from a long-term socio-economic crisis and strict adjustment programs. The concepts of energy market liberalisation, energy ecosystems, and energy policy are presented and compared to the main directions of the EU institutional environment and the evolution of the political and institutional framework of Greece. In Greece, an attempt has been made in recent years to liberalise the electricity market, which is hindered for a long time by socio-economic forces favoured by the monopolistic system of the market. This liberalisation process is also an opportunity for the country to move towards enhancing the structures that can lead to faster and more sustainable development and to maintain the pace of “coupling” with the most developed energy economies of Europe.Keywords: Energy market liberalisation, Electricity market liberalisation, Energy business ecosystem, Energy policy, EU energy packages, Greek energy system JEL Classifications: Q40, Q43, Q49 DOI: https://doi.org/10.32479/ijeep.10804
- Published
- 2021
42. Short-term stochastic movements of electricity prices and long-term investments in power generating technologies
- Author
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Carlo Mari
- Subjects
Economics and Econometrics ,business.industry ,Stochastic modelling ,020209 energy ,02 engineering and technology ,010501 environmental sciences ,Nuclear power ,01 natural sciences ,Net present value ,General Energy ,Base load power plant ,Order (exchange) ,Modeling and Simulation ,Value (economics) ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Econometrics ,Electricity market ,Electricity ,business ,0105 earth and related environmental sciences - Abstract
Modeling probability distributions for the long-term dynamics of electricity prices is of key importance to value long-term investments under uncertainty in the power sector, such as investments in new generating technologies. Starting from accurate modeling of the short-term behavior of electricity prices, we derive long-term stationary probability distributions. Then, investments in new baseload generating technologies, namely gas, coal and nuclear power, are discussed. In order to compute the stochastic Net Present Value of investments in new generating technologies, the revenues from selling electricity in power markets as well as the costs which come from buying fuels at uncertain market prices must be evaluated over very long time horizons, i.e., over the whole lifetime of the plants. Starting from accurate short-term stochastic models of fuel prices in addition to electricity prices, we provide long-run probability distributions which are used to compute revenues and costs incurring during the whole lifetime of the plants. Five sources of uncertainty are taken into account, namely electricity market prices, fossil fuel prices (natural gas and coal prices), nuclear fuel prices and $$\hbox {CO}_{\text{2 }}$$ CO 2 prices. Our evaluation model is calibrated on empirical data to account for both historical market prices and macroeconomic views about future trends of electricity and fuel prices. The full probability density of the stochastic Net Present Value is thus determined for each generation technology considered in this study.
- Published
- 2021
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43. EFFECTS OF THE EUROPEAN GREEN DEAL ON TURKEY’S ELECTRICITY MARKET
- Author
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Burak Yitgin, Göktuğ Şahin, and Muhammed Ali Taksim
- Subjects
Market economy ,Economics ,Electricity market ,Avrupa Yeşil Mutabakatı,Elektrik Piyasaları,Enerji,Enerji Ekonomisi ,Business ,European Green Deal,Electricity Markets,Energy,Energy Economics ,İktisat - Abstract
Genel anlamda gezegenin, iklim değişikliğinin bir sonucu olarak çevresel felaketlerle karşı karşıya olduğuna inanıldığı için Avrupa Birliği, sürdürülebilir bir yeşil geçişe ilham vermeyi amaçlamaktadır. Avrupa Komisyonu, ısınan atmosfere, iklim değişikliğine ve kirli havaya tepki olan bu öncü motivasyonun bir göstergesi olarak “Avrupa Yeşil Mutabakatı”nı ortaya koymuştur. Avrupa Yeşil Mutabakatı, Avrupa Birliği ülkeleri ve vatandaşları açısından 2050 yılına kadar sera gazı emisyonlarının sıfır olacağı adil ve rekabetçi bir dönüşümü amaçlamaktadır. Ayrıca Avrupa Yeşil Mutabakatı, aynı zamanda diğer ülkelerin sera gazı emisyonları açısından da ilgili dönüşümü sağlamaya kararlıdır. Avrupa ile ticaret hacmi açısından önde gelen ülkelerden biri olan Türkiye, karbon emisyonları konusunu detaylı olarak incelemek zorundadır. Aksi halde Avrupa Birliği ve özellikle elektrik sektörü gibi Sera Gazı Emisyonu ile yüksek derecede ilişkili olan sektörlerden birine sahip Türkiye arasındaki ticari anlaşmalar, karbon kaçağı riskini azaltmayı amaçlayan Komisyon'un karbon sınırı ayarlama mekanizması kapsamında sekteye uğrama riskine sahiptir. Bu çalışmanın amacı, Avrupa Yeşil Mutabakatı’nın sonucunda karbon limitlerinden veya uygulamasından etkilenecek olan Türkiye elektrik piyasası üzerindeki etkilerini hem arz hem de talep yönünden incelemektir. Ayrıca karşılaştırmalı olarak inceleme yapılan bu çalışmada, Avrupa Yeşil Mutabakatı gereklilikleri kapsamında Türkiye elektrik piyasası için bir yol haritası sunulmaktadır., As it is commonly believed that the planet is facing environmental disasters as a consequence of climate change, the European Union intends to inspire a sustainable green transition. The European Commission presented “The European Green Deal” as an indicator of this leading mission, which is a reaction to a warming atmosphere, climate change and polluted air. The European Green Deal aims to transform the countries and citizens of the European Union into a fair and competitive environment where greenhouse gas emissions will be zero by 2050. Above all, the European Green Deal is also committed to transforming the greenhouse gas emissions of other countries. Turkey, one of the leading countries in terms of the volume of trade with Europe, is required to examine the issue of carbon emissions in detail. If it were not, the European Union and Turkey could end the commercial agreements under the carbon-border adjustment mechanism of the Commission aimed at reducing carbon leakage risk, where the electricity sector is one of Turkey's most associated greenhouse gas emissions sectors. The objective of this study is to examine the effects of the Green Deal on Turkey’s electricity market from both the supply and demand side, which will be affected by the Deal's carbon limits or enforcement. In addition, in this study, a road map for Turkey’s electricity market is offered via comparative analysis method under the requirements of The European Green Deal.
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- 2021
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44. The optimal hourly electricity price considering wind electricity uncertainty based on conditional value at risk
- Author
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Qin Su, Haike Qiao, and Zijun Zhang
- Subjects
Wind power ,Mains electricity ,Renewable Energy, Sustainability and the Environment ,Electricity price ,business.industry ,020209 energy ,02 engineering and technology ,Environmental economics ,Expected shortfall ,020401 chemical engineering ,0202 electrical engineering, electronic engineering, information engineering ,Economics ,Electricity market ,0204 chemical engineering ,business ,Game theory - Abstract
Wind generation fluctuation results in the electricity supply uncertainty of the company in electricity market. And this uncertainty has an important impact on hourly electricity price. In our pape...
- Published
- 2021
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45. Probabilistic Supply and Demand Balance Control Method based on Electricity Market Mechanism Considering N-1 Criterion
- Author
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Takao Tsuji, Kazuyuki Tanaka, Hitoshi Sugimoto, and Akira Koide
- Subjects
Mathematical optimization ,Balance (accounting) ,Probabilistic logic ,Economics ,Energy Engineering and Power Technology ,Electricity market ,Electrical and Electronic Engineering ,Control methods ,Mechanism (sociology) ,Supply and demand - Published
- 2021
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46. Zero-Marginal-Cost Electricity Market Designs: Lessons Learned From Hydro Systems in Latin America Might Be Applicable for Decarbonization
- Author
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Luiz Barroso, Hugh Rudnick, B. Bezerra, Gabriel Cunha, and Francisco D. Munoz
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Marginal cost ,Latin Americans ,business.industry ,Natural resource economics ,Energy Engineering and Power Technology ,Subsidy ,Low-carbon economy ,Zero (linguistics) ,Renewable energy ,Economics ,Common value auction ,Electricity market ,Electrical and Electronic Engineering ,business - Abstract
Large reductions in the cost of renewable energy technologies, particularly wind and solar, as well as various instruments used to achieve decarbonization targets (e.g., renewable mandates, renewable auctions, subsidies, and carbon pricing mechanisms) are driving the rapid growth of investments in these generation technologies worldwide.
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- 2021
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47. Calculating the profits of an economic MPC applied to CSP plants with thermal storage system.
- Author
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Vasallo, Manuel Jesús, Bravo, José Manuel, Cojocaru, Emilian Gelu, and Gegúndez, Manuel Emilio
- Subjects
- *
SOLAR power plants , *PREDICTIVE control systems , *HEAT storage devices , *ELECTRIC utilities , *RENEWABLE energy sources , *ELECTRIC power production , *ECONOMICS - Abstract
Electricity producers participating in a day-ahead energy market aim to maximize profits derived from electricity sales. The daily generation schedule has to be offered in advance, usually the previous day before a certain moment in time. The development of an economically-optimal generation schedule is the core of the generation scheduling problem. To solve this problem, renewable energy plant owners need, besides energy prices forecast, weather prediction. Among renewable energy sources, concentrated solar power (CSP) plants with thermal energy storage (TES) may find it easier to participate in electricity markets due to their semi-dispatchable generation. In any case, the limited accuracy of forecasting solar resource brings about the risk of penalties that may be imposed to CSP plants for deviation from the submitted schedule. This paper proposes a model-based predictive control (MPC) approach with an economic objective function to tackle the scheduling problem in CSP plants with TES. By this approach, the most recent forecast and the current status of plant can be used by the proposed economic MPC approach to reschedule the generation conveniently at regular time intervals. On the other hand, a more feasible generation schedule for the next day is performed at the appropriate time thanks to the use of short-term forecast. The proposed approach is applied, in a simulation context, to a 50 MW parabolic trough collector-based CSP plant with TES under the assumptions of perfect price forecasts and participation in the Spanish day-ahead energy market. A case study based on a half-year period to test several meteorological conditions is performed. In this study, an economic analysis is carried out using actual values of energy price, penalty cost, solar resource data and its day-ahead forecast. Results show an economic improvement in comparison with a traditional day-ahead scheduling strategy, especially in periods with a bad weather forecast. To overcome the lack of short-term weather forecast data for this study, a synthetic short-term predictor, whose accuracy level can be tuned by means of a parameter, is used. Sweeping this accuracy level between the situation with no forecast improvement and perfect short-term forecast, the MPC strategy reaches an improvement in total profits during the six months period between 13.9% and 33.3% of the maximum room for improvement. This maximum ideal improvement is defined as the difference in profits between the MPC strategy with perfect forecasts and the day-ahead scheduling strategy. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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48. The Coordinated Development Path of Renewable Energy and National Economy in China Considering Risks of Electricity Market and Energy Policy.
- Author
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Xiao, Yunpeng, Wang, Xifan, Wang, Xiuli, Wu, Zechen, and Liu, Wei
- Abstract
The long-standing over-reliance on fossil fuels brings urgent environmental issues. To reduce emissions and maintain a sustained economic growth, many countries seek for energy revolution. With the help of smart grid technology, renewable energy eventually plays an indispensable role in energy production and consumption. Electricity market mechanisms and energy policies are thus developed rapidly and can pose more risks to national economy. This paper proposes a modified computable general equilibrium (CGE) model for China to evaluate these risks. Based on several economic evaluation indices, the coordinated development path of renewable energy and national economy is put forward. Industrial restructuring is considered in the modified CGE model since it is one of the key economic policies in today's China. Numerical studies are conducted based on real-world data, and sensitivity analysis further illustrates how different factors affect the results. [ABSTRACT FROM PUBLISHER]
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- 2017
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49. FORMATION AND ANALYSIS OF REGULATED AND FREELY NEGOTIATED PRICES OF ELECTRICITY IN BULGARIA.
- Author
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Angelova, J.
- Subjects
- *
ELECTRIC power production , *ECONOMICS ,ENERGY consumption management ,BULGARIAN economic policy - Abstract
Moving from a state monopoly to a competitive environment is a major challenge for all energy companies. Under a regulated market, the recognition of costs passes through the regulator regardless of how effective the spending of the funds is. By creating a free energy market, it aims at streamlining production costs, improving energy efficiency and introducing competition in the sector. For the purpose of the analysis, information on the free market price chain is used and an analysis of the share distribution of the network component with VAT and excise is made. [ABSTRACT FROM AUTHOR]
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- 2017
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50. The impact of wind farm location and control strategy on wind generation penetration and market prices.
- Author
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Awad, Ahmed S.A., Ahmed, Mohamed Hassan, Salama, Magdy M.A., and El-Fouly, Tarek H.M.
- Subjects
- *
LOCATION of wind power plants , *WIND power industry , *ENERGY industries , *WIND turbines , *BUS conductors (Electricity) , *NODAL analysis , *ECONOMICS - Abstract
Wind energy has become one of the most cost-effective renewable sources nowadays. However, the stochastic nature associated with wind-energy production represents a great challenge for power-system operations. Therefore, probabilistic techniques are necessary to evaluate the performance of power systems with substantial amounts of wind generation. This paper presents a probabilistic based bi-level optimization approach for evaluating the impact of wind farm location and control strategy on the penetration level of wind farms and electricity market prices. The bi-level optimization model is formulated as mathematical program with equilibrium constraints (MPEC) and solved by means of the NLPEC solver in the General Algebraic Modeling System (GAMS) environment. Several cases studies are presented in this paper to determine to the optimal wind generation penetration and market prices with different locations and control strategies for wind farms. Moreover, some scenarios are discussed in regards to the practical allocation of wind farms. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
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