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Netting of Capacity in Interconnector Auctions

Felix Hoffler and Tobias Wittmann

Year: 2007
Volume: Volume 28
Number: Number 1
DOI: 10.5547/ISSN0195-6574-EJ-Vol28-No1-6
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Abstract:
Scarce interconnector capacities are a severe obstacle to transregional competition and a unified market for electricity in the European Union. However, physically the interconnectors are rarely used up to capacity. This is due to the fact that the current allocation schemes make only limited use of the fact that currents in opposing directions cancel out. We propose a �netting� auction mechanism which makes use of this and in which even small transmission capacities can generate large competitive pressure in adjacent markets. Netting increases the usage of capacity and reduces the auctioneer�s incentive to withhold capacity from the auction.



How Competitive is Cross-border Trade of Electricity? Theory and Evidence from European Electricity Markets

Georg Gebhardt and Felix Hoffler

Year: 2013
Volume: Volume 34
Number: Number 1
DOI: 10.5547/01956574.34.1.6
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Abstract:
Integrating national markets is a major policy target in the European energy market. Yet, wholesale prices for electricity still differ significantly. Whether these price differences are caused only by limited interconnector capacities or also by lack of cross-border competition is an open question. To address this question, we develop a new approach to determine to which extent price differences stem from limited participation in cross-border trade. We derive a theoretical integration benchmark, using Grossman's (1976) notion of a rational expectations equilibrium. We compare the benchmark to data from European electricity markets. The data reject the integration hypothesis and indicate that well informed traders do not engage in cross-border trade.



Reliability in Multi-regional Power Systems: Capacity Adequacy and the Role of Interconnectors

Simeon Hagspiel, Andreas Knaut, and Jakob Peter

Year: 2018
Volume: Volume 39
Number: Number 5
DOI: 10.5547/01956574.39.5.shag
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Abstract:
Based upon probabilistic reliability metrics, we develop an optimization model to determine the efficient amount and location of firm generation capacity to achieve reliability targets in multi-regional electricity systems. A particular focus lies on the representation and contribution of transmission capacities as well as variable renewable resources. Calibrating our model with a comprehensive dataset for Europe, we find that there are substantial benefits from regional cooperation. The amount of firm generation capacity to meet a perfectly reliably system could be reduced by 36.2 GW (i.e., 6.4%) compared to an isolated regional approach, which translates to savings of 14.5 bn EUR. Interconnectors contribute in both directions, with capacity values up to their technical maximum of close to 200%, while wind power contributions are in the range of 3.8-29.5%. Furthermore, we find that specific reliability targets heavily impact the efficient amount and distribution of reliable capacity as well as the contribution of individual technologies.Keywords: Reliability of supply, Capacity adequacy, Multi-regional power system, Interconnector, Variable renewable energy



Market Power and Spatial Arbitrage between Interconnected Gas Hubs

Olivier Massol andAlbert Banal-Estañol

Year: 2018
Volume: Volume 39
Number: Special Issue 2
DOI: 10.5547/01956574.39.SI2.omas
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Abstract:
This paper examines the performance of the spatial arbitrages carried out between two regional markets for wholesale natural gas linked by a pipeline system. We develop a new empirical methodology to (i) detect if these markets are integrated, i.e., if all the spatial arbitrage opportunities between the two markets are being exploited, and (ii) decompose the observed spatial price differences into factors such as transportation costs, transportation bottlenecks, and the oligopolistic behavior of the arbitrageurs. Our framework incorporates a new test for the presence of market power and it is thus able to distinguish between physical and strategic behavior constraints on marginal cost pricing. We use the case of the "Interconnector" pipeline linking Belgium and the UK as an application. Our empirical findings show that all the arbitrage opportunities between the two zones are being exploited but confirm the presence of market power.





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