Hedging strategies in energy markets: The case of electricity retailers

Raphaël Homayoun Boroumand, Stéphane Goutte, Simon Porcher and Thomas Porcher
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Raphaël Homayoun Boroumand: ESG Research Lab - ESG Management School, City University London

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Abstract: As market intermediaries, electricity retailers buy electricity from the wholesale market or self generate for re(sale) on the retail market. Electricity retailers are uncertain about how much electricity their residential customers will use at any time of the day until they actually turn switches on. While demand uncertainty is a common feature of all commodity markets, retailers generally rely on storage to manage demand uncertainty. On electricity markets, retailers are exposed to joint quantity and price risk on an hourly basis given the physical singularity of electricity as a commodity. In the literature on electricity markets, few articles deals on intra-day hedging portfolios to manage joint price and quantity risk whereas electricity markets are hourly markets. The contributions of the article are twofold. First, we define through a VaR and CVaR model optimal portfolios for specific hours (3am, 6am,. .. ,12pm) based on electricity market data from 2001 to 2011 for the French market. We prove that the optimal hedging strategy differs depending on the cluster hour. Secondly, we demonstrate the significantly superior efficiency of intra-day hedging portfolios over daily (therefore weekly and yearly) portfolios. Over a decade (2001-2011), our results

Keywords: Retailer; Electricity; Risk; Hedging; Portfolio; Intra-day; VaR; CVaR (search for similar items in EconPapers)
Date: 2015
New Economics Papers: this item is included in nep-ene, nep-reg and nep-rmg
Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-01194750
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Published in Energy Economics, 2015, 51, pp.503-509. ⟨10.1016/j.eneco.2015.06.021⟩

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Journal Article: Hedging strategies in energy markets: The case of electricity retailers (2015)
Working Paper: Hedging strategies in energy markets: the case of electricity retailers (2015)
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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:halshs-01194750

DOI: 10.1016/j.eneco.2015.06.021

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