从今年5月13日起,上海的部分居民晚上用电只要支付白天用电的一半费用。平时段6时至22时为0.61元/千瓦时,晚时段22时至次日6时为0.35元/千瓦时。这是一个双赢的举措,分时段定价可减少持续运转的电力资源浪费,鼓励居民多用低谷电。这种新举措就是分时消费,在国外已被广泛采用。在美国,如果乘客在飞机起飞前一小时买票且空位多,机票便宜得如同白送;旅游景点在旺季时收费高,一到淡季就便宜下来。1996年底,上海 Starting from May 13 this year, part of Shanghai residents pay only half the cost of electricity during the day by night. It is 0.61 yuan / kWh in the period from 6:00 to 22:00 and 0.35 yuan / kWh in the late hours from 22:00 to 6:00 the next day. This is a win-win measure. Time-series pricing can reduce the waste of electricity resources in a continuous operation and encourage residents to use more low-trough electricity. This new measure is time-consuming, has been widely adopted abroad. In the United States, airfare is cheaper when passengers buy tickets and have more seats one hour before the plane takes off; tourist attractions charge higher prices during high season and are cheaper from the first season to the off season. By the end of 1996, Shanghai