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Multistage Stochastic Portfolio Optimisation in Deregulated Electricity Markets Using Linear Decision Rules

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  • Paula Rocha
  • Daniel Kuhn
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    Abstract

    The deregulation of electricity markets increases the financial risk faced by retailers who procure electric energy on the spot market to meet their customers’ electricity demand. To hedge against this exposure, retailers often hold a portfolio of electricity derivative contracts. In this paper, we propose a multistage stochastic mean-variance optimisation model for the management of such a portfolio. To reduce computational complexity, we perform two approximations: stage-aggregation and linear decision rules (LDR). The LDR approach consists of restricting the set of decision rules to those affine in the history of the random parameters. When applied to mean-variance optimisation models, it leads to convex quadratic programs. Since their size grows typically only polynomially with the number of periods, they can be efficiently solved. Our numerical experiments illustrate the value of adaptivity inherent in the LDR method and its potential for enabling scalability to problems with many periods.

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    File URL: http://comisef.eu/files/wps040.pdf
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    Bibliographic Info

    Paper provided by COMISEF in its series Working Papers with number 040.

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    Length: 27 pages
    Date of creation: 03 Jun 2010
    Date of revision:
    Handle: RePEc:com:wpaper:040

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    Web page: http://www.comisef.eu

    Related research

    Keywords: OR in energy; electricity portfolio management; stochastic programming; risk management; linear decision rules;

    This paper has been announced in the following NEP Reports:

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