The development of hydropower in LAO PDR has been very contentious. . Then, the US$1.2 billion Xe-Pian Xe-Namnoy project located on the Xe Kong River in Laos' Bolaven plateau, collapsed. The dam construction began in February 2013 and was expected to be completed in 2019. It is part of the dam construction boom in the country with the aim of generating electricity to be exported to Thailand and become the "the battery of Southeast Asia" . The Mekong and its tributaries would the source of hydropower, which (in money terms) was 23 % of exports in 2017, from 47 hydroprojects that should reach 100 by the year 2020.