Tags Thac Ba Hydro Power Why SBV keeps dong weak against US dollar Monday, Jan 07, 2019 On December 11 the State Bank of Viet Nam reduced the value of the dong against the US dollar by VND9 from the previous day to VND22,775 (US$1). EVN Finance divest from Thac Ba Hydro-power Co Saturday, Jul 27, 2013 The finance arm of Electricity of Viet Nam, EVN Finance, conducted a major sell of all of its 6.22 per cent stake in Thac Ba Hydro-power Co''s (TBC) capital, the company reported on Friday.