Japan should stop funding the construction of a coal-fired power plant in Bangladesh as the emissions it produces will accelerate global warming and put the low-lying country at greater risk of climate-change impacts, youth activists said on Friday.

Japanese trading house Sumitomo Corp, along with Toshiba and IHI Corporation, is building the Matarbari power plant in Maheshkhali near the southeastern coastal town of Cox's Bazar, funded by the Japan International Cooperation Agency (JICA).

Climate campaigners said the project contradicts Japan's commitment, made with other wealthy G7 nations last May, to end funding for "unabated" coal power overseas by the end of 2021.