The Experts below are selected from a list of 142158 Experts worldwide ranked by ideXlab platform
Anders Forssell - One of the best experts on this subject based on the ideXlab platform.
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is swedish district heating operating on an Integrated Market differences in pricing price convergence and Marketing strategy between public and private district heating companies
Energy Policy, 2016Co-Authors: Magnus Aberg, Lars Falting, Anders ForssellAbstract:Abstract The deregulation of the Swedish electricity Market in 1996 made it possible to operate municipal district heating commercially. Until that time district heating had been organized mainly as municipal utilities. After 1996 district heating is instead expected to function on a Market. In competitive and Integrated Markets, prices are expected to be equal, or converging. To find out if district heating operates on an Integrated Market the differences in price levels, price convergence, price strategy, and business goals, among municipal, private and state owned district heating companies are investigated. Price statistics was used along with results from a questionnaire that was answered by representatives for 109 Swedish district heating companies. The results show that prices among district heating systems do not converge significantly and that variations in prices among municipal systems are larger than among private and state owned systems. Furthermore, despite the fact that district heating is supposed to be commercial, a vast majority of district heating companies apply cost-based pricing and not Market pricing. The municipal companies give priority to political goals before financial goals. The conclusion is that a Swedish Integrated Market for heat has not yet evolved, and some district heating price-controlling mechanism is necessary.
Benjamin Wood - One of the best experts on this subject based on the ideXlab platform.
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globalization first foods systems transformations and corporate power a synthesis of literature and data on the Market and political practices of the transnational baby food industry
Globalization and Health, 2021Co-Authors: Phillip Baker, Katheryn N Russ, Manho Kang, Thiago M Santos, Paulo A R Neves, Julie Smith, Gillian Kingston, Melissa Mialon, Mark Lawrence, Benjamin WoodAbstract:The global milk formula Market has ‘boomed’ in recent decades, raising serious concerns for breastfeeding, and child and maternal health. Despite these developments, few studies have investigated the global expansion of the baby food industry, nor the Market and political practices corporations have used to grow and sustain their Markets. In this paper, our aim is to understand the strategies used by the baby food industry to shape ‘first-foods systems’ across its diverse Markets, and in doing so, drive milk formula consumption on a global scale. We used a theoretically guided synthesis review method, which Integrated diverse qualitative and quantitative data sources. Global milk formula sales grew from ~US$1.5 billion in 1978 to US$55.6 billion in 2019. This remarkable expansion has occurred along two main historical axes. First, the widening geographical reach of the baby food industry and its Marketing practices, both globally and within countries, as corporations have pursued new growth opportunities, especially in the Global South. Second, the broadening of product ranges beyond infant formula, to include an array of follow-up, toddler and specialized formulas for a wider range of age groups and conditions, thereby widening the scope of mother-child populations subject to commodification. Sophisticated Marketing techniques have been used to grow and sustain milk formula consumption, including Marketing through health systems, mass-media and digital advertising, and novel product innovations backed by corporate science. To enable and sustain this Marketing, the industry has engaged in diverse political practices to foster favourable policy, regulatory and knowledge environments. This has included lobbying international and national policy-makers, generating and deploying favourable science, leveraging global trade rules and adopting corporate policies to counter regulatory action by governments. The baby food industry uses Integrated Market and political strategies to shape first-foods systems in ways that drive and sustain milk formula Market expansion, on a global scale. Such practices are a major impediment to global implementation of the International Code of Marketing of Breastmilk Substitutes, and other policy actions to protect, promote and support breastfeeding. New modalities of public health action are needed to negate the political practices of the industry in particular, and ultimately to constrain corporate power over the mother-child breastfeeding dyad.
Pierre Pinson - One of the best experts on this subject based on the ideXlab platform.
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heat and electricity Market coordination a scalable complementarity approach
European Journal of Operational Research, 2020Co-Authors: Lesia Mitridati, Jalal Kazempour, Pierre PinsonAbstract:Abstract The large penetration of stochastic and non-dispatchable renewable energy sources increases the need for operational flexibility in power systems. Flexibility can be unlocked by aligning the existing interactions and synergies between heat and power systems. However, in the current sequential order of heat and electricity Market clearings, the heat Market is myopic to its interactions with the electricity Market. This paper designs a heat Market, aimed at achieving the optimal coordination of heat and power systems while respecting the current Market regulations. The proposed electricity-aware heat Market yields a soft coordination between heat and power systems by endogenously modeling their interactions in the day-ahead heat Market clearing. The proposed Market framework requires to solve a hierarchical optimization problem under uncertainty, which can be computationally challenging in large-scale energy systems with many scenarios. To resolve this potential scalability issue, this paper develops an augmented regularized Benders decomposition algorithm. The performance of the proposed Market framework is compared against the fully Integrated and sequential Market frameworks using an ex-post out-of-sample simulation. This comparison reveals that there is a significant room for improvement in the cost-effective operation of the overall energy system. In particular, the proposed electricity-aware heat Market framework provides a trade-off between the sequential and fully Integrated Market frameworks by significantly reducing the inefficiencies in both heat and electricity systems while respecting the current sequence of clearing heat and electricity Markets.
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an Integrated Market for electricity and natural gas systems with stochastic power producers
European Journal of Operational Research, 2019Co-Authors: Christos Ordoudis, Pierre Pinson, Juan M MoralesAbstract:Abstract In energy systems with high shares of weather-driven renewable power sources, gas-fired power plants can serve as a back-up technology to ensure security of supply and provide short-term flexibility. Therefore, a tighter coordination between electricity and natural gas networks is foreseen. In this work, we examine different levels of coordination in terms of system integration and time coupling of trading floors. We propose an Integrated operational model for electricity and natural gas systems under uncertain power supply by applying two-stage stochastic programming. This formulation co-optimizes day-ahead and real-time dispatch of both energy systems and aims at minimizing the total expected cost. Additionally, two deterministic models, one of an Integrated energy system and one that treats the two systems independently, are presented. We utilize a formulation that considers the linepack of the natural gas system, while it results in a tractable mixed-integer linear programming (MILP) model. Our analysis demonstrates the effectiveness of the proposed model in accommodating high shares of renewables and the importance of proper natural gas system modeling in short-term operations to reveal valuable flexibility of the natural gas system. Moreover, we identify the coordination parameters between the two Markets and show their impact on the system’s operation and dispatch.
José A. Aguado - One of the best experts on this subject based on the ideXlab platform.
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An oligopolistic model for an Integrated Market of energy and spinning reserve
2006Co-Authors: Guillermo Autista, Stude Membe, Vícto H. Quintana, José A. AguadoAbstract:Abstract—In this paper, a model for oligopolistic competition in electricity Markets is presented. Most previous proposed models have been static and focused only on the energy Market incentives for strategic behavior. In contrast, in this paper, a multiperiod Market for energy and spinning reserve (SR) is considered. By including such factors, the competition among participants is modeled with more realism. Competition in the energy Market is modeled by means of conjectured supply functions, while conjectured reserve-price response functions are used to con-sider the generators ’ ability to alter the SR prices. The resulting equilibrium problem is modeled in terms of complementarity conditions. Based upon a complementarity model, the opportunity cost between the energy and SR Markets is derived for oligopolistic Markets. The proposed model is illustrated by a six-node network using a dc approximation. Index Terms—Complementarity, conjectured function, energy Market, oligopoly, spinning reserve (SR). NOTATION The following notation is introduced as preliminary to the description of the model presented in this paper. Acronyms FTR Financial transmission right. GAMS General algebraic modeling system. GenCo Generation company. ISO Independent system operator. LMP Locational marginal pricing/price. MLCP Mixed linear complementarity problem. KKT Karush–Kuhn–Tucker. SR Spinning reserve
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An oligopolistic model of an Integrated Market for energy and spinning reserve
IEEE Transactions on Power Systems, 2006Co-Authors: G. Bautista, Vícto H. Quintana, José A. AguadoAbstract:In this paper, a model for oligopolistic competition in electricity Markets is presented. Most previous proposed models have been static and focused only on the energy Market incentives for strategic behavior. In contrast, in this paper, a multiperiod Market for energy and spinning reserve (SR) is considered. By including such factors, the competition among participants is modeled with more realism. Competition in the energy Market is modeled by means of conjectured supply functions, while conjectured reserve-price response functions are used to consider the generators' ability to alter the SR prices. The resulting equilibrium problem is modeled in terms of complementarity conditions. Based upon a complementarity model, the opportunity cost between the energy and SR Markets is derived for oligopolistic Markets. The proposed model is illustrated by a six-node network using a dc approximation.
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An oligopolistic model of an Integrated Market for energy and spinning reserve
2006 IEEE Power Engineering Society General Meeting, 2006Co-Authors: G. Bautista, Vícto H. Quintana, José A. AguadoAbstract:Summary form only given. In this paper, a model for oligopolistic competition in electricity Markets is presented. Most previous proposed models have been static and focused only on the energy Market incentives for strategic behaviour. In contrast, in this paper, a multi-period Market for energy and spinning reserve (SR) is considered. By including such factors, the competition among participants is modelled with more realism. Competition in the energy Market is modelled by means of conjectured supply functions, while conjectured reserve-price response functions are used to consider the generators ability to alter the SR prices. The resulting equilibrium problem is modelled in terms of complementarity conditions. Based upon a complementarity model, the opportunity cost between the energy and SR Markets is derived for oligopolistic Markets. The proposed model is illustrated by a six-node network using a DC approximation.
Ye Guo - One of the best experts on this subject based on the ideXlab platform.
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generalized locational marginal pricing in a heat and electricity Integrated Market
IEEE Transactions on Smart Grid, 2019Co-Authors: Lirong Deng, Hongbin Sun, Jianhui Wang, Qinglai Guo, Runze Chen, Ye GuoAbstract:In this paper, a new pricing method derived from the heat-and-electricity-Integrated Market clearing problem, referred to as generalized locational marginal pricing (GLMP), is presented. The Market clearing problem is formulated by the independent system operator (ISO) to coordinate the electric power system with the district heating system by considering time-delay effects in the heating transfer process. GLMP is explained as the shadow price related to the nodal electricity balance and nodal heat balance at the optimal solution. Without considering network constraints, a simplified Market clearing problem is proposed to illustrate the price linkage between heating and electricity Markets through combined heat and power joint costs and feasible regions. Rational generation units will behave exactly as the ISO predicts by maximizing their individual producer surplus. Then, a compact form of the complete Market clearing problem is employed to derive the detailed components of GLMP, namely, the extended marginal generation component, marginal loss component, and marginal congestion component. Furthermore, time-delay effects are reflected in the pricing. Numerical results verify the validity of component classification in GLMP and demonstrate that the proposed method can promote efficiency improvements and reduce cross-subsidies.
