August 1, 2008
Information on eight Hydrolancang dams on the Lancang (upper Mekong) River in Yunnan (Updated 08/01/08).
|The Jinghong dam shown here under construction was completed in June 2008.
(See our Jinghong photo gallery.)
|The Hydrolancang cascade|
|Hydrolancang’s existing and proposed dams along an 800-km stretch of the Lancang (upper Mekong) River in Yunnan province (from upstream to downstream):|
|Projects||Installed capacity (MW)||Dam height (metres)||Reservoir capacity (m3)||Estimated cost (US$millions)||Status|
|Gongguoqiao||750||130||348 million||625||Due to start: 2006
|Xiaowan||4,200||292||15 billion||4,000||Under construction. Completion: 2010|
|Manwan||1,500||136||920 million||473||Completed: 1996|
|Dachaoshan||1,350||111||940 million||600||Completed: 2003|
|Nuozhadu||5,500||261.5||23.7 billion||5,000||Under construction. Completion: 2015|
|Jinghong||1,500||108||1.2 billion||1,760||Completed: 2008|
|Notes:Run-of-river versus storage reservoirs:
Six of the eight dams are “seasonal reservoirs,” with output dependent on seasonal flows rather than storage capacity behind the dams. The two other dams – Xiaowan and Nuozhadu – will function as giant cisterns or storage reservoirs operated to maintain baseload power production throughout the year and downstream flow through the seasonal reservoirs. If completed, Xiaowan will be the world’s tallest arch dam, with 38 times as much design storage capacity as the Manwan dam, and a reservoir that will stretch 169 km upstream. The Nuozhadu reservoir will stretch 226 km upstream.
Hydrolancang’s power output crippled by water shortages:
Categories: Mekong Utility Watch