Hi Benny,

What does 合理分配额定用电量 means in the following sentence?

从昨天开始，除49家重点保电用户外，长沙市所有企、事业单位和居民区、城区将首次实施“开三停一”的用电原则，同时长沙将每周发布停电公告。湖南省电力公司总工程师秦红山告诉记者，事实上，从11月5日开始，湖南省的14个地区已陆续开始计划用电，各地区政府根据当地实际用电需求总量，合理分配额定用电量，这种状况将一直持续到明年3月份
左右。

I know that 合理分配额定用电量 superficially means “reasonable distribution of electricity”, but the word that is creating some confusion for me is 额定. Generally, I know that this word means “rating” or something like that, but what does it mean in the sentence?