Direct cool refrigerators, geysers and colour televisions will be next in the list of appliances for which energy efficiency labelling is to be made mandatory by the Bureau of Energy Efficiency (BEE), a body under the Union Ministry of Power.

These three are among 10 appliances for which energy efficiency rating norms, denoted by stars, are voluntary. More stars meant more energy efficiency. Such labelling is mandatory for air-conditioners, frost-free refrigerators, distribution transformers and tubular fluorescent lights.