The Energy Efficiency (Labelling of Products) Bill, which aims to encourage people to use energy-efficient products that help reduce greenhouse-gas emissions and other pollutants will be gazetted on April 4 and introduced to the Legislative Council on April 18.

Under the Bill, the Government proposes to include three products - refrigerating appliances, room air conditioners and compact fluorescent lamps - in the initial phase of the mandatory scheme.

With the implementation of the scheme for these three products, 150 Gigawatt hours (GWh) in annual electricity saving can be achieved, the Environmental Protection Department said.

This amount is equivalent to the annual electricity consumption of 105,000 units of room air conditioners, or an annual saving of $135 million in electricity bills. It would also cut 105,000 tonnes of carbon-dioxide emissions annually.

The three products now consume about 6,700 GWh per year - more than 70% of the residential sector's annual electricity consumption.