Romania's own electricity output plus the country's imports fell by 3.8% year-on-year to 43.2 TWh in January-August, INS said in a statement.
The country’s electricity exports fell by 37.5% year-on-year to 2.48 TWh, while imports surged by 172.8% to 2.75 TWh.
Thermal power plants generated 1.53 TWh in the first eight months of 2019, down 10.4% on the year, while hydroelectric power output fell 10.9% to 12.1 TWh.
The production of the country's sole nuclear power plant Cernavoda fell by 0.8% on the year to 7.35 TWh in January-August.
Electricity generated from wind farms in January-August 2019 rose 15.2% to 4.4 TWh.
Photovoltaic power stations generated 1.29 TWh in January-August, up 4.7% on the year.
Final electricity consumption in Romania fell by an annual 0.2% to 37 TWh in January-June.
Romania produced 2.22 million TOE of crude oil in January-August, down by 1% on the year, and 2.47 million TOE of coal, 5.3% less than in the same period of last year. The country also produced 5.39 million TOE of natural gas, down 2.4% year-on-year.
TOE is the rounded-off amount of energy that would be produced by burning one metric tonne of crude oil.
Romania's energy production fell by an annual 1.6% to 20.96 million TOE in 2018.