Bidding in sequential electricity markets: The Nordic case |
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Authors: | Trine Krogh Boomsma Nina Juul Stein-Erik Fleten |
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Institution: | 1. Department of Mathematical Sciences, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark;2. System Analysis, Technical University of Denmark, Frederiksborgvej 399, 4000 Roskilde, Denmark;3. Norwegian University of Science and Technology, Høgskoleringen 1, 7491 Trondheim, Norway |
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Abstract: | For electricity market participants trading in sequential markets with differences in price levels and risk exposure, it is relevant to analyze the potential of coordinated bidding. We consider a Nordic power producer who engages in the day-ahead spot market and the hour-ahead balancing market. In both markets, clearing prices and dispatched volumes are unknown at the time of bidding. However, in the balancing market, the market participant faces an additional risk of not being dispatched. Taking into account the sequential clearing of these markets and the gradual realization of market prices, we formulate the bidding problem as a multi-stage stochastic program. We investigate whether higher risk exposure may cause hesitation to bid into the balancing market. Furthermore, we quantify the gain from coordinated bidding, and by deriving bounds on this gain, assess the performance of alternative bidding strategies used in practice. |
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Keywords: | OR in energy Stochastic programming Scenario generation Electricity markets Bidding |
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