1 A Complementarity Model for the European Natural Gas Market Ruud Egginga, Steven A. Gabrielb, Franziska Holzc, Jifang Zhuangd aDepartment of Civil and Environmental Engineering, University of Maryland College Park, Maryland 20742 USA,
[email protected] bDepartment of Civil and Environmental Engineering, Applied Mathematics and Scienti…c Computation Program, University of Maryland College Park, Maryland 20742 USA,
[email protected] cDIW Berlin, Mohrenstraße58, D-10117 Berlin, Germany,
[email protected] dChevron USA, Houston, TX 77401 USA,
[email protected] In this paper, we present a detailed and comprehensive complementarity model for com- puting market equilibrium values in the European natural gas system. Market players include producers and their marketing arms which we call "transmitters", pipeline and storage operators, marketers, LNG lique…ers, regasi…ers, tankers, and three end-use con- sumption sectors. The economic behavior of producers, transmitters, pipeline and storage operators, lique…ers and regasi…ers is modeled via optimization problems whose Karush- Kuhn-Tucker (KKT) optimality conditions in combination with market-clearing condi- tions form the complementarity system. The LNG tankers, marketers and consumption sectors are modeled implicitly via appropriate cost functions, aggregate demand curves, and ex-post calculations, respectively. The model is run on several case studies that highlight its capabilities, including a simulation of a disruption of Russian supplies via Ukraine. Keywords: European Natural Gas Market, Global LNG market, Mixed Complemen- tarity Problem 1. Introduction Many European countries have only limited domestic reserves of natural gas, and are therefore dependent on a small number of pipeline exporters to secure their supplies via pipeline. This situation enables strategic producers to exert market power resulting in higher prices for a variety of consumers downstream, as was already analyzed in [51].