This document discusses tariffs for electricity usage in Malaysia. It defines tariffs as payment scales imposed by electricity suppliers on consumers. There are three main types of tariffs: equal rate tariff, two-part tariff, and block tariff. Equal rate tariff uses two meters to measure lighting/fan usage separately from power outlet usage. Two-part tariff measures maximum demand and charges additionally for units used. Block tariff has three pricing tiers based on consumption levels. The document provides examples of calculating bills under each tariff system.