Environmental constraints and market uncertainties create new challenges for electricity generation. In this title, originally published in 1991, the authors present a simulation model with a capability for highly detailed activity to identify cost-minimising investment options under different assumptions about demand, costs, regulation, and other economic and environmental factors. Applying the model to two U.S. regions having sharply different electricity demand and supply characteristics, they identify the importance of advanced technologies and augmented electricity trade among regions. This title is ideal for students interested in environmental studies.