1、居民用户每日按欠费额的千分之一计算;其他用户:当年欠费部分,每日按欠费总额的千分之二计算;跨年度欠费部分,每日按欠费总额的千分之三计算。电费违约金收取总额按日累加计收,总额不足1元者按1元收取。
2、法律依据:《供电营业规则》 第九十八条,用户在供电企业规定的期限内未交清电费时,应承担电费滞纳的违约责任。电费违约金从逾期之日起计算至交纳日止。

1, dweller user is daily the one thousandth computation that presses the forehead that owe cost; Other user: Owe fee part in those days, daily the 2 millesimals computation that presses the amount that owe cost; Go beyond the year owes fee part, daily the 3 millesimals computation that presses the amount that owe cost. Amount of collection of penalty due to breach of contract of charge of electricity presses day cumulative plan close, the person that amount is not worth 1 yuan presses 1 yuan of collection.
2, legal basis: " power supply business regulation " the 98th, the user did not clear electric take time inside the time limit that power supply enterprise sets, the agree carries the responsibility of breach of contract of accept of sluggish of charge of electricity. Penalty due to breach of contract of charge of electricity is calculated since the day from exceed the time limit day of best friend accept stops.