Greenhouse gas emissions in Hong Kong have fallen slightly due to a switch to cleaner fuel by power companies, the latest official figures show.
But green groups say there is still room for improvement in the emissions per person and the government should think of more ways of saving energy to bring these down further.
The 2010 "greenhouse gas inventory" released by the Environmental Protection Department yesterday showed that total emissions of the gases, which contribute to global warming, amounted to 41,500 kilotonnes, a fall of 2.8 per cent from the previous year. It was the lowest level recorded since 2005.
Electricity generation remained the largest contributor, accounting for 66 per cent, followed by transport, 17.8 per cent.
Prentice Koo Wai-muk, of Greenpeace, said the slight decline should be attributed to the switch to using more natural gas than coal in power plants.
But he said it was only a minor improvement and the level of emissions per person - 5.6 tonnes in 2010 - was a useful reference.