This addition to the ISOR series addresses the analytics of the operations of electric energy systems with increasing penetration of shastic renewable production facilities, such as wind- and solar-based generation units. As shastic renewable production units become ubiquitous throughout electric energy systems, an increasing level of flexible backup provided by non-shastic units and other system agents is needed if supply security and quality are to be maintained. Within the context above, this book provides up-to-date analytical tools to address challenging operational problems such as: • The modeling and forecasting of shastic renewable power production. • The characterization of the impact of renewable production on market outcomes. • The clearing of electricity markets with high penetration of shastic renewable units. • The development of mechanisms to counteract the variability and unpredictability of shastic renewable units so that supply security is not at risk. • The trading of the electric energy produced by shastic renewable producers. • The association of a number of electricity production facilities, shastic and others, to increase their competitive edge in the electricity market. • The development of procedures to enable demand response and to facilitate the integration of shastic renewable units. This book is written in a modular and tutorial manner and includes many illustrative examples to facilitate its comprehension. It is intended for advanced undergraduate and graduate students in the fields of electric energy systems, applied mathematics and economics. Practitioners in the electric energy sector will benefit as well from the concepts and techniques explained in this book.