Romania's own electricity output plus the country's imports rose by 11.8% year-on-year to 11.1 TWh in January-September, INS said in a statement.
The country’s electricity exports fell by 40.7% year-on-year to 2.58TWh, while imports surged by 183% to 3.35 TWh.
Thermal power plants generated 1.71 TWh in the first nine months of 2019, down 9.1% on the year, while hydroelectric power output fell 12.7% to 1.3 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 4.2% to 4.88 TWh.
Photovoltaic power stations generated 3.35 TWh in January-September, up 3.1% on the year.
Final electricity consumption in Romania fell by an annual 0.1% to 4.14 TWh in January-September.
Romania produced 2.5 million TOE of crude oil in January-September, down by 1.2% on the year, and 2.8 million TOE of coal, 5.2% less than in the same period of last year. The country also produced 6.05 million TOE of natural gas, down 2.3% 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.