Vietnam 's largest hydro-electric power plant in the northern mountainous province of Son La on April 28 officially launched its fifth turbine.

With five turbines, the plant provides 50 million KWh of electricity a day to the national grid, contributing to easing power shortage this summer.

The Son La Hydro-electric power plant's sixth and last turbine is expected to be operational by August, three years ahead of schedule.

Construction of the 37 trillion VND (1.8 billion USD) power plant began in December 2005. When fully operational, the 2,400MW plant will be able to supply 10.2 billion kWh of electricity a year.-VNA