With the full implementation taking effect from 1 July 2016 (suppliers were given a 1 year exemption to clear existing stock), incandescent lamps, compact fluorescent lamps with integrated ballasts (CFLi) and LED lamps must meet minimum energy performance standards and comply with mandatory energy labelling requirements. NEA requires the products for sale to be affixed with the energy label, similar to the ticks / rating labels commonly found on electronic products such as refrigerators, air-con systems and washing machines. 

Do ensure that you purchase light bulbs only if the energy labels are affixed on the products so that you are assured of its rated energy efficiency. For detailed information, please refer to this news article on ChannelNewsAsia.

Example of an energy label on a LED light bulb: