imputing to each consumer class a cost equal to the product of the number of units (kilowatt or kilowatthour) taken within a specified period (e.g., peak, winter day, summer day, night), and the corresponding marginal cost Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=691-11-05
imputing to each consumer class a cost equal to the product of the number of units (kilowatt or kilowatthour) taken within a specified period (e.g., peak, winter day, summer day, night), and the corresponding marginal cost