China's power generation climbed 4.1 percent year on year to 2.2 trillion kilowatt hours in the first four months of 2019, official data showed Wednesday.

In April alone, power generation rose 3.8 percent from one year earlier to 544 billion kilowatt hours, down 1.6 percentage points from March, according to the National Bureau of Statistics.

A breakdown showed the growth of coal-fired electricity generation reversed the upward trend with a decrease of 0.2 percent, while the generation of hydroelectricity, solar power and nuclear power all posted faster growth by 18.2 percent, 13.4 percent and 28.8 percent, respectively.

Wind-generated power merely saw a year-on-year increase of 1 percent last month due to unfavorable weather conditions.

In general, hydroelectricity, nuclear power, wind power and solar power generation accounted for 25.4 percent of the overall power generation, up 1.8 percentage points from the same period last year, adding to evidence that China's power generation becomes cleaner.