Vietnam currently has five hydroelectric expansions underway. The countrys Son La project, which began construction in late 2005, is anticipated to have a generating capacity of 2,400 MW by 2012, will be the largest hydroelectric project in Vietnam when completed. In September 2004, construction began on the Ban Ve hydroelectric power plant, expected to begin operations in 2008. EVN began work on four additional hydroelectric projects in late 2004. The Dong Nai 3 and Dong Nai 4, both located in the Central Highlands region, are expected to be completed within four years and to provide approximately 520 MW of generating capacity. In December 2004, EVN began construction of the Se San 4 hydropower plant in the central highlands provinces of Gia Lai and Kon Tum. The plant is anticipated to have a capacity of 330 MW and to generate 1,390 million kWh per year. Vietnam also plans to build three additional plants in the region before 2010. In March 2004, EVN announced plans to spend $1.3 billion to build and refurbish power plants with a combined capacity of 1,510 MW. The projects include the combined cycle power plant Phu My 2.1, the hydroelectric facility Can Don, the Phu My 3 and Phu My 4 thermal plants, and Na Duong. Additional projects include the Song Ba Ha, Bac Binh, Se San 4, Dong Nai 3 and Dong Nai 4 hydrostations, the Quang Ninh, Ninh Binh extension, and the O Mon 600-MW thermal plant.