This undated file photo shows CNOOC Guanlan, literally "watching waves",  China's first offshore deep-sea wind power project. (PHOTO PROVIDED TO CHINA DAILY)

BEIJING – China's first offshore million-tonne carbon storage project was put into operation on Thursday in the South China Sea, said the China National Offshore Oil Corporation.  

The project is designed to store more than 1.5 million tonnes of carbon dioxide in total, according to the company.