Customs duty exemption for naphtha imported for public electricity generation granted, with captive-use excluded and related tariff entries revised. An amendment inserts an exemption for naphtha imported for generation of electrical energy by specified government, licensed or permitted electricity undertakings, effective from the specified future date, while excluding naphtha used for captive generation; the notification also substitutes a ten percent duty entry against several listed tariff serial numbers and makes corresponding textual changes to the principal notification.