However, due to high cost, LED energy saving lamps at present mainly used for lighting in public places such as shopping malls and public works, the home market is still in the promotion phase. Reporters visited several supermarkets and found that most businesses are still selling the traditional energy-saving lamps. "We're selling energy-saving lamps ordinary supermarket faster, mainly on the price approved by the public." A large supermarket sales staff said that the general energy-saving lamp price is not high, more than ten dollars or so, use a longer time, by the public like. "Of course, as we more and more environmentally friendly, strong, and some people will come to ask the store have 12v LED lights." The sales staff told reporters.
Master Chen calculations. Store the original use of the traditional 15-watt energy-saving lamps, and 6.3-watt LED lamps can replace the traditional 15-watt energy-saving lamps and energy saving of 55%. 1.0 yuan per kilowatt-hour tariff calculation (commercial electric), time to 12 hours a day to calculate. 15 watts of power consumption of traditional energy-saving lamps: 15W × 12 小时 × 365 days ÷ 1000 = 65.7 kWh (that is usually referred degrees), electricity 65.7 million; the same brightness LED power consumption for one year: 6.3W × 12 hours × 365 days ÷ 1000 = 27.594 kWh electricity is 27.594 yuan.
Therefore, a LED lights can save electricity 38 yuan each year. Although the relatively high price of LED lights, and the savings in electricity can make up the difference between the two parts, cheap led light bulbs are here.