Computational Methods for Electric Power Systems introduces computational methods that form the basis of many analytical studies in power systems‎.‎ The book provides the background for a number of widely used algorithms that underlie several commercial software packages‎,‎ linking concepts to power system applications‎.‎ By understanding the theory behind many of the algorithms‎,‎ the reader can make better use of the software and make more informed decisions ‎(‎e‎.‎g‎.‎‎,‎ choice of integration method and step size in simulation packages‎)‎‎.‎ This Third Edition contains new material on preconditioners for linear iterative methods‎,‎ Broyden‎'‎s method‎,‎ and Jacobian‎-free Newton‎-Krylov methods‎.‎ It includes additional problems and examples‎,‎ as well as updated examples on sparse lower‎-upper ‎(‎LU‎)‎ factorization‎.‎ It also adds coverage of the eigensystem realization algorithm and the double‎-shift method for computing complex eigenvalues‎.‎