We have developed our very own tariff clock based on ESKOM tariff structure for our time-of-use clients. This clock uses a 24-hour clock mechanism and simply shows people when they are in or close to peak, standard or off-peak zones during the day. One is now able to schedule or avoid using high powered machinery and equipment by just timing these activities appropriately and thereby making substantial savings in electricity bills. The concentric rings also show the differences on weekdays, Saturdays and Sundays. Last but not least, it can also help tell the time.