Like a herd of wild bulls, raging floodwaters stampeded across a highland plateau in July and tore a hole in the mammoth Xi-Pian Xe-Namnoy hydropower complex dam in south central Laos. The boiling torrent crashed downstream from the nearly completed $1 billion dam, drowning 39 people identified so far, leaving over 100 more missing, and forcing more than 6,600 people out of their homes and into temporary government housing.
Little more than a month later, on August 29, floodwaters caused an irrigation dam to burst at Swar creek in central Myanmar, flooding 85 villages.Two people are missing.
The two catastrophes, both connected to the increasing ferocity of drenching storms in Southeast Asia, are an epochal moment of reckoning for the financiers, builders and managers of big dams, especially the mammoth hydropower dams that n nations are so intent on building despite the vivid and mounting risks. Mega dam developers are being challenged by fierce ecological havoc, as well as climbing costs, civic resistance, and engineering lapses. The result is that dams around the world are failing at a rate never seen before.In Southeast Asia alone three big dams have failed in the last year. A second hydropower dam failed in northern Laos in September 2017.
“There have always been big projects that failed,” said Bent Flyvbjerg, professor of major program management at Oxford University’s Saïd Business School and a widely cited global authority on mega projects. “What is different now is that we have many more mega projects, they are much bigger, and there are spectacular failures that are more visible.”
The deadly collapse in Laos is a case in point. Until the Xi-Pian Xe-Namnoy disaster, Laotian leaders viewed mega hydro dam construction as a safe path to strengthening their treasury. The tiny landlocked nation of 7.1 million people set out to encourage domestic and international financiers and contractors to build over 100 big hydropower projects to sell electricity to its fast-growing Southeast Asia neighbors and to serve its own rising power demands. According to the Laotian government, two thirds of the country’s hydropower is exported, which accounts for almost a third of its export revenue.
More than 50 dams are in various stages of planning and construction, according to government reports. As a whole, Laos is undertaking one of the world’s largest hydropower development programs. Continue reading “Southeast Asia’s Dam Disasters”