Rome, June 28, 2003- The need to distribute the use of electricity more evenly over the course of the day has recently become evident. The possibility of using energy according to different time/tariff periods is linked to the completion of Enels digital metre project. The project is under way and 9 million have been installed to date, a rate of 40,000 a day, and all 30 million Enel customers will have one by 2005. The project requires a total investment of 2 billion euro. The use of electricity during evening and night tariff periods will lead to lower bills and diminish the concentration of energy demand during peak periods, thus optimizing consumption during the day.