Chinese Premier Li Keqiang (R) meets with French President Francois Hollande (L) in Paris June 30, 2015. [Photo/Xinhua]

To reach the goal of increasing nonfossil fuels in primary energy consumption to about 20 percent by 2030, China needs to increase nuclear power capacity by 100 million kilowatts, hydropower capacity by 150 million kilowatts, solar capacity by 300 million kilowatts and wind power capacity by 400 million kilowatts between 2016 and 2030, according to the think tank.

China's annual power generation from nonfossil fuels will reach 4 trillion kilowatt-hours by 2030, and the use of nonfossil fuels is expected to equal 1.2 billion metric tons of standard coal in 2030.

He Jiankun, director of the Institute of Low Carbon Economy at Tsinghua University, said the renewable energy target would be equivalent to installing 10 5-megawatt wind turbines a day or 10 1-million-kilowatt nuclear power units annually between 2020 and 2030.

"Such a size and pace for renewable energy growth is unprecedented globally," he said. "China faces a tougher challenge than the developed countries to achieve the series of targets because it is in a different stage of development."

Most developed countries maintained an economic growth rate of between 2 and 3 percent when their emissions peaked. Since China is expected to maintain a growth rate of 4 to 5 percent near 2030, it will have to keep its carbon emissions per unit of GDP lower than what the developed countries did.

Adnan Amin, director general of the Abu Dhabi-based International Renewable Energy Agency, said the public sector cannot be the single primary source for realizing the energy transformation for all countries.

The government should make efforts to create a good investment environment and map out policy frameworks to help lower the costs and increase the profits of private investors, he said.

lanlan@chinadaily.com.cn