Alessandro Ferrero has pioneered methods, based on advanced Digital Signal Processing techniques, for material and component characterization and power and energy metering. His work has helped improve power quality, especially for identifying sources that produce distortion and compensating for unnecessary current and power components.In Europe, Alessandro Ferrero has led in the use of Virtual Instruments. The measurement and instrumentation technologies he developed have been used to solve complex measurement problems in electric power systems under non-sinusoidal conditions by factoring in Virtual Instruments, Digital Signal Processing and Distributed Measurement Systems.When using this instruments, uncertainty evaluation may become a difficult task. Alessandro Ferrero and his research team have reconsidered the mathematical representation of a measurement result, moving from the presently employed probability theory, to the more general theory of evidence and pioneering the use of this mathematical theory for representing measurement results together with their uncertainty.More recently, Alessandro Ferrero has started a multidisciplinary research team on Forensic Metrology, that is the application of metrology inside the Forensic Sciences, whenever measurement results are used as evidence of a crime or misconduct. This team, composed by scientists and lawyers, is aimed at showing that correct and metrology-sound results, including measurement uncertainty, are of great help to the trier of facts to render a decision “beyond any reasonable doubt”, whilst measurement results, absent uncertainty, may be misleading and hide the presence of a reasonable doubt to the trier of facts.Alessandro Ferrero is a Life Fellow of IEEE and a Fellow of AAFS