Green Technologies in Vietnam: Opportunities and ChallengesOne-third of Vietnam's power supply is currently generated by hydro energy, another one-third comes from gas, and the remaining stems from either coal or energy imports. To ensure a stable energy supply to the domestic market, the government plans to operate its first nuclear plant by 2020. According to the General Department of Energy, the electricity output in 2015 ranges from 194 to 210 billion kWh. The output is estimated to increase to 330 -- 362 billion kWh in 2020, and to 695 -- 834 billion kWh in 2030. Furthermore, the government has issued a Clean Energy Development Plan, according to which the carbon dioxide emissions in all energy operations should be cut down by 10% to 20% until 2020, and by 20% to 30% until 2030.