China saw an optimized energy consumption structure last year with an increase of clean energy, an industry report showed.

Consumption of clean energy, including natural gas, hydropower, nuclear power and wind power, accounted for 22.1 percent of energy consumed last year, up 1.3 percentage points from 2017, China Electric Power Planning & Engineering Institute said in a report.

Coal consumption accounted for 59 percent of the total energy consumption in 2018, down 1.4 percentage points year on year, according to the report.

Total energy consumption reached 4.64 billion tonnes of standard coal, a year-on-year growth of 3.3 percent, the fastest growth since 2014, the report said.

The report also predicted that China's energy consumption will continue the clean and efficient trend in 2019.