Dynamic Testing of Wholesale Power Market Designs: An Open-Source Agent-Based Framework

Authors: Junjie Sun and Leigh Tesfatsion

Economics Working Paper No. 06025, Department of Economics, Iowa State University, Revised June 2007

Abstract:

In April 2003 the U.S. Federal Energy Regulatory Commission proposed a complicated market design – the Wholesale Power Market Platform (WPMP) – for common adoption by all U.S. wholesale power markets.  Versions of the WPMP have been implemented in New England, New York, the mid-Atlantic states, the Midwest, and the Southwest, and adopted for implementation in California.  Strong opposition to the WPMP persists among some industry stakeholders, however, due largely to a perceived lack of adequate performance testing.  This study reports on the model development and open-source implementation (in Java) of a computational wholesale power market organized in accordance with core WPMP features and operating over a realistically rendered transmission grid.  The traders within this market model are strategic profit-seeking agents whose learning behaviors are based on data from human-subject experiments.  Our key experimental focus is the complex interplay among structural conditions, market protocols, and learning behaviors in relation to short-term and longer-term market performance.  Findings for a dynamic 5-node transmission grid test case are presented for concrete illustration.

Keywords: Wholesale power market restructuring, Empirical input validation, Market design, Behavioral economics, Learning, Market power, Agent-based modeling, AMES wholesale power market framework, Java, RepastJ.

JEL Codes: L1, D8, L9, C6

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