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新中国的电力工业是在旧中国几乎空白的基础上发展起来的。１９４９年中国发电装机容量只有１８４８６万千瓦，年发电量只有４３１０亿千瓦时，发电装机容量和发电量居世界第２１位和２５位。当时除东北仅有一条２２０千伏线路和几条１５４千伏线路，以及京津唐和台湾省建
The power industry in New China was developed on the basis of almost blank old China. In 1949, China’s installed power generation capacity was only 184,600,000 kilowatts, and its annual power generation capacity was only 431 billion kilowatt-hours. Its installed capacity and power generation ranked the 21st and 25th in the world. At that time, there was only one 220 kV line and several 154 kV lines in the northeast, as well as the Beijing-Tianjin-Tangshan-Taiwan provincial capital.