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ISO Net Surplus Collection and Allocation in Wholesale Power Markets Under Locational Marginal Pricing

Hongyan Li and Leigh Tesfatsion ()

Staff General Research Papers Archive from Iowa State University, Department of Economics

Abstract: This study uses 5-bus and 30-bus test cases to explore ISO net surplus (congestion rent) collections and allocations in wholesale power markets with grid congestion managed by locational marginal prices (LMPs). Price-sensitivity of demand and generator learning capabilities are taken as experimental treatment factors. A key finding is that treatments resulting in greater generator capacity withholding, hence higher and more volatile LMPs, also result in greater ISO net surplus collections that can be substantial in size. A key conclusion is that ISO net surplus collections should be used pro-actively to mitigate the conditions encouraging generator capacity withholding and hence high and volatile LMPs rather than to provide ex post support for LMP payment offsets and LMP volatility risk hedging as is currently the norm. Related work can be found at:

Keywords: Restructured wholesale power markets; ISO net surplus (congestion rents); multi-agent learning; demand-bid price sensitivity; AMES Wholesale Power Market Test Bed (search for similar items in EconPapers)
JEL-codes: C6 D4 D6 L1 L3 L94 Q4 (search for similar items in EconPapers)
Date: 2009-07-09
New Economics Papers: this item is included in nep-cmp
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Published in IEEE Transactions on Power Systems, May 2011, vol. 26 no. 2, pp. 627-641

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