Book excerpt: Adaptive Voltage Control in Power Systems, a self-contained blend of theory and novel application, offers in-depth treatment of such adaptive control schemes. Coverage moves from power-system-modelling problems through illustrations of the main adaptive control systems, including self-tuning, model-reference and nonlinearities compensation to a detailed description of design methods: Kalman filtering, parameter-identification algorithms and discrete-time controller design are all represented. Case studies address applications issues in the implementation of adaptive voltage control.