Engineering and economic features of distribution systems supplying increasing load densities

Large savings may usually be made in distribution systems by designing present meeds to fit in with future requirements determined from a study of population and utilization increase. A comparison of the total investment required and the annual operating costs of various systems to meet local conditions, points clearly to 4000-volt, four-wire primary distribution. The general procedure in studying the distribution system of the Portland Electric Power Company, utilizing standard methods and locally derived costs, is outlined.