China could struggle to meet its 2020 nuclear energy targets with the industry still waiting on a cautious government to speed up the approval process, a senior industry executive said on Saturday.

But as it waits for domestic projects to go ahead, the state-owned China National Nuclear Corporation is now ready to start selling reactors overseas, said the firm's chairman Sun Qin, speaking on the sidelines of the annual session of parliament.

China planned to raise its total installed nuclear capacity to 58 gigawatts by 2020, up from 20 GW now, but despite ending a freeze on new approvals late in 2013, the state has not yet given any new projects the full go-ahead following a nationwide safety probe in the wake of the Fukushima crisis.