二十世纪九十年代后期,全国部分地区出现电力过剩,电源建设随之放缓,结果引发了2003年后部分省市电力供应短缺,尤其是在夏冬季节,各地电力负荷屡创新高。供需矛盾十分突出。2003年全国有 21个省份拉闸限电,2004年全国电力缺口达4000万千瓦,缺少电量 650亿千瓦时,拉闸限电的省份增加到24个。2005年1-5月,25个省份发生拉闸限电。一、电力需求侧管理的必要 In the late 1990s, excess power in some areas of the country led to a slowdown in power supply construction. As a result, the power supply shortage in some provinces and municipalities started after 2003, especially in summer and winter. The contradiction between supply and demand is very prominent. In 2003, electricity was cut off in 21 provinces across the country. In 2004, the national power shortage reached 40 million kilowatts, with a deficit of 65 billion kilowatts of electricity and 24 power cuts. From January to May 2005, power cuts occurred in 25 provinces. First, the power needs of the management side of the need