How much does LED lighting save1

　　 How about the cost-effectiveness of LED lighting? What is the source of investment funds and benefits for the transformation? This is the most worrying issue in the market for the large-scale promotion of LED.

　　 Take a 100W LED street lamp as an example. A year ago, the cost of purchasing an LED street lamp was 2500-3000 yuan. At present, the price of street lamps has dropped to 1500-1800 yuan. The payback period for replacing high-pressure sodium lamps with 800-1200 yuan has been reduced to 2— 3 years. The LED street lamp can save energy by 50%, with a life span of 9 years, during which the lamp does not need to be replaced. The cost-effectiveness of using LEDs in new street lights is already very obvious.

　　 Regarding the funds for the renovation and replacement of LED street lights, Guangdong proposed in the 'Implementation Plan for the Promotion of the Use of LED Lighting Products' that local finance will solve the source of funds for the LED lighting renovation project from the additional income of urban public utilities collected with electricity charges. The Guangdong Provincial Department of Science and Technology has calculated the economic benefits and energy-saving and emission reduction effects of LED street lamp retrofit projects based on the data of LED demonstration projects in the past two years.

　　 Calculated based on 2 million LED street lights. Before the renovation, the annual electricity cost of street lights reached 2 billion yuan, and the annual lamp replacement fee reached 500 million yuan, so the total annual cost reached 2.5 billion yuan. After the transformation, the total annual cost savings is 1.5 billion yuan, including 50% savings in electricity bills and 500 million yuan in lamp replacement fees.

　　 The total investment in the renovation of 2 million LED street lights is 4.89 billion yuan, plus the total cost of loan interest is 6.1 billion yuan. During the 9-year lifespan of LED street lights, a total of 13.5 billion yuan will be saved, and the local government will receive 7.4 billion yuan in energy-saving benefits.

　　 In addition, it will save 10.8 billion kilowatt-hours of electricity, which is equivalent to saving 3.79 million tons of standard coal, reducing sulfur dioxide emissions by 70,000 tons, reducing carbon dioxide emissions by 2.68 million tons, and reducing soot emissions by 70,000 tons.

　　 It can be seen that the proportional extraction of energy-saving benefits from the additional income of urban public utilities levied with electricity charges can fully pay for the investment in LED transformation, and can produce obvious economic benefits and energy-saving and emission-reduction effects.