Initial estimates by the New Delhi-based Bureau of Energy Efficiency (BEE) suggest that around 1,650 MW of electricity was saved countrywide during FY10 through the use of star-rated air-conditioners, refrigerators, tube-lights and colour TVs. This includes nearly 350 MW saved by CTVs alone. While the one- to five-star labelling for fridges, ACs and tube-lights became mandatory from January 2010, the star-labelling for CTVs and LCDs is still voluntary. BEE expects to bring these too under the mandatory regulation by March 2011, Mr Saurabh Kumar, Secretary BEE, said.