Not many years ago, power quality was largely a technical issue that interested a few highly specialized experts. Today, it has become a national concern. The reason for this change lies in the rapid rise of digital technology. As you'll read in this article, most power quality disturbances that affect digitally dependant industries are short in duration. The best option for providing seamless power lies in energy storage technology. Before I discuss the different types of batteries and new trends in energy storage, let's briefly look at the digital economy and its associated problems and needs.