Common and unique factors influencing daily swap returns in the Nordic electricity market, 1997-2005

Dennis Frestad

Energy Economics, 2008, vol. 30, issue 3, pages 1081-1097

Abstract: This paper demonstrates that electricity swap returns can be explained by a set of uncorrelated common and unique risk factors. Electricity swap returns differ from return data in other markets by a significant portion of overall risk being unaccounted for by common factors. It follows that hedging a given exposure with an exposure in another segment of the swap market could be fallible. Furthermore, the volatility function common to all swaps may have to be augmented by unique risk in applied pricing applications.

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