With major structural changes will need to be thoroughly reexamined. This book discusses decision making for problems where a particular decision affects the options available at the next decision time. The deregulation of the electric utility industry will shift the emphasis from a cost-based to a price-based approach; the resulting occuring in the electric power industry, many long-standing ways of operation increase in uncertainty requires that a stochastic approach be adopted for optimal decision-making. This monograph covers a wide range of topics including dynamic programming, ordinal optimization, price modelling and forecasting, future market decisions, reserve market decisions and decisions in a congested market place.