西电东送三大通道是指南、中、北三大通道。南通道将西南地区水电和云南、贵州的火电向广东送电;中通道将三峡电力送出,实现川渝和华中地区共同向华东、广东送电; West to East to send the three major channels is the guide, the three major channels in North. South Passage to the southwest hydropower and Yunnan, Guizhou, thermal power transmission to Guangdong; the channel will be sent to the Three Gorges Power, Sichuan and Chongqing and central China to achieve common to the east, Guangdong, power transmission;