Electricity use increased 8.5 percent year on year to 6.8 trillion kilowatt hours, according to the administration.
Power consumption by the service sector and households maintained double-digit growth in 2018, up 12.7 percent and 10.4 percent, respectively.
Industrial sectors saw an increase of 9.8 percent in power consumption, and power use in agriculture was up 7.2 percent.
The steady power consumption growth came amid stable economic growth. China's GDP rose 6.7 percent in the first three quarters of 2018, putting the economy on track to meet the government's targeted growth of around 6.5 percent set for 2018.