BEIJING — China's power generation decreased in the first four months of this year, down 5 percent year-on-year, official data showed on May 15.

Electricity output hit about 2.14 trillion kilowatt-hours during this period, according to the National Bureau of Statistics.

In April alone, the output saw a 0.3-percent surge to 554.3 billion kilowatt-hours.

A breakdown of the data showed a decline of hydropower electricity generation in April, which fell 9.2 percent year-on-year.

Coal-fired electricity generation went up 1.2 percent last month, rebounding from the 7.5-percent drop in March, while solar power climbed 12.3 percent year-on-year.

Last month, nuclear and wind power generation saw an increase of 10.7 percent and 1.2 percent, respectively.