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On investment decisions in liberalized electricity markets : the impact of price caps at the spot market

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  • Gregor, ZOETTL

Abstract

We analyze the impact of a uniform price cap at electricity spot markets on firms investment decisions and on welfare. Since investment decisions for those markets are taken in the long run, fluctuating demand at the spot market eventually gives rise to high price spikes in case of binding capacities. Those price spikes are considered to send accurate signals for investment in generation capacities, limiting those spikes by price caps is thought to reduce firms’ investment incentives. We are able to show that this is not tre for the case of strategic investment behavior. More specifically we analyze a market game where firms choose capacities prior to a spot market which is subject to fluctuating or uncertain demand. We derive, that appropriately chosen price caps do always increase firms investment incentives under imperfect competition. We furthermore characterize the optimal price cap. Based on the theoretical framework, we empirically analyze the impact of uniform price caps on the German electricity market.

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Bibliographic Info

Paper provided by Université catholique de Louvain, Département des Sciences Economiques in its series Discussion Papers (ECON - Département des Sciences Economiques) with number 2008028.

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Length: 28
Date of creation: 01 Aug 2008
Date of revision:
Handle: RePEc:ctl:louvec:2008028

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Related research

Keywords: Investment incentives; price caps; fluctuating demand; electricity markets;

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Cited by:
  1. Sakellaris, Kostis, 2010. "Modeling Electricity Markets as Two-Stage Capacity Constrained Price Competition Games under Uncertainty," MPRA Paper 23317, University Library of Munich, Germany.
  2. Malte Sunderkötter, 2011. "Fuel mix characteristics and expected stock returns of European power companies," EWL Working Papers 11056, University of Duisburg-Essen, Chair for Management Science and Energy Economics, revised Oct 2011.
  3. Filomena, Tiago Pascoal & Campos-Náñez, Enrique & Duffey, Michael Robert, 2014. "Technology selection and capacity investment under uncertainty," European Journal of Operational Research, Elsevier, vol. 232(1), pages 125-136.

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