SEOUL, Dec. 20 (Xinhua) -- South Korea's energy ministry said Wednesday that it planned to invest about 110 trillion won (some 100 billion U.S. dollars) in renewable energy sources by 2030 to increase the portion of clean energy.

Under the long-term plan, 110 trillion won will be invested to raise the renewable energy ratio of the total electricity generation from 7 percent in 2016 to 20 percent by 2030, according to the Ministry of Trade, Industry and Energy.

Facilities to be built for clean energy, such as solar and wind powers, would generate 48.7-gigawatt electricity that is equivalent to electricity generated by about 35 nuclear reactors.

Currently, existing clean energy facilities generate 15.1 gigawatt of power, according to the ministry.

Among the facilities to be newly installed, solar power would account for 63 percent, while wind power would take up 34 percent. Solar panels would be built in rural areas, while wind farms would be installed in coastal regions.

South Korean President Moon Jae-in vowed to increase the country's dependence on renewable energy sources by reducing the dependence on nuclear reactors.

Following the 2011 Fukushima nuclear disaster in Japan, worries spread here about the nuclear reactors, which are located mainly in the southeastern coastal region of South Korea housing millions of people.

A series of earthquakes hit South Korea's southeastern region last year and this year, boosting the worries further.