Picture used for illustrative purposes only.

China needs to speed up its nuclear development to achieve its pledge to bring greenhouse gas emissions to a peak before 2030 and become "carbon neutral" by 2060.

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The world's biggest greenhouse gas emitter has lagged behind its previous target of operating 58 gigawatts of nuclear power capacity by 2020, partly as the Fukushima nuclear accident slowed down approvals of new projects.

China's state council approved five nuclear projects, which will be developed by China National Nuclear Corp (CNNC), at a meeting on Wednesday, one of the two sources familiar with the matter said.

This photo shows the Fukushima nuclear plant.

Officials, including those from the National Energy Administration and National Nuclear Safety Bureau, attended the meeting at which the development of the nuclear industry in the country was discussed, four sources said. They asked not to be named because they were not authorised to speak to the press.

"Nuclear power is a 'have to do' choice if China aims to achieve the targets of bringing carbon emission by 2030 and reaching carbon neutrality by 2060," an official from the Nuclear Safety Bureau said.

The five reactors approved include four regular nuclear units - number 7 and number 8 at Tianwan nuclear power plant in eastern Jiangsu province, and number 3 and number 4 in Xudapu in northeastern Liaoning province.

All four will use Russian-made VVER-1200 technology and have individual capacity of 1.2 gigawatts (GW), two of the sources said.

The government also approved a small, 125-MW module reactor (SMR) demonstration project at Changjiang nuclear power plant in Hainan province.

Reuters