The Electricity Act Article 57

When the government requests emergency electric power supply for disaster prevention, Electricity-Generating Enterprises and Self-Use Power-Generation Equipment operators shall give priority to providing emergency supply and the Electricity Transmission and Distribution Enterprise shall give priority to the emergency power supply in dispatching. The requesting government agency is responsible for paying for the emergency supply provided.
中文原文 電業法第57條
政府機關為防禦災害要求緊急供電時,發電業及自用發電設備設置者應優先供電,輸配電業應優先提供調度;其用電費用,由該機關負擔。

English translation for reference only; the Chinese text prevails. Not legal advice.