All street lamps with solar energy street lamp can save one of the three gorges hydropower station power LED street light than the high-pressure sodium lamp and energy saving, has long been recognized. But may also lack some quantitative concept. Can now think 100 watts of the LED street lamp can replace 250 watts
all street lamps with solar energy street lamp can save one of the three gorges hydropower station 【 The three gorges hydropower station, the Yangtze river three gorges water conservancy hub project, also known as the three gorges project. 】 The power LED street light' LED street lamp is made of street lamp, LED lamps and lanterns with high efficiency, safety, energy saving, environmental protection, long service life, fast response speed, high color rendering index of unique advantages, the city lighting energy saving is of great significance. 】 Than the high-pressure sodium lamp and energy saving, has long been recognized. But may also lack some quantitative concept. Can now think 100 watts of the LED street lamp can replace 250 w high pressure sodium lamp, so you can simply think that each LED street lamp can save 150 watts of electricity. However, if change to use solar power supply, then even this 100 w power can also be saved, that is to say, every street lamp can save 250 watts of electricity. According to officials estimate that China's current total lights around more than one hundred million, and is growing at 20% a year, 2008 new street lamp 20 million lights. If the one hundred million street lamp can be reduced into 60 million 250 - watt lamps, suppose that 60 million streetlights all into a solar LED street lamp 【 Based energy as the earth's resources increasingly poor, the investment cost of the surging, all kinds of safety and pollution hidden danger is everywhere, the solar energy as an 'inexhaustible, an inexhaustible' safety, environmental protection, new energy more and more attention. 】 , so can save a total of 15 million kilowatts of power. Assume that every street lamp to work 12 hours a day, within a year will save 65. 7 billion KWH. Amount of power and the three gorges hydropower station in 2007 to 616. 0. 3 billion KWH. So all the lights in the country to save electricity by solar street light after one year will be more than a year the output of the three gorges hydropower station. This is a very astonishing Numbers. Even if you don't go to transform the old street lamp, an annual increase of street lamp is about 20 million light now, three years 60 million new light, the same method, three years later also can save one of the three gorges power station. Without the need to mobilize the national strength, investing hundreds of billions, immigration millions to achieve. Not only that, the solar energy is a clean renewable energy, it not only saves electricity, and reduce the emissions of carbon dioxide. Each lamps of 250 w high pressure sodium lamp within a year will have 1290 kg of carbon dioxide, so after 60 million streetlights all into a solar street lamp, will be able to reduce 77. 4 million tons of carbon dioxide. So after to solar energy, not only saves electricity, but also save the cost of co2 reduction. Cost per tonne of carbon dioxide reduction is 345 - 404 dollars. Reduce the 77. 4 million tonnes of carbon dioxide is equivalent to save $31 billion cost of co2 reduction! Digital is just in front of the LED street lamp and high pressure sodium lamp. For with 100 w LED street lamp, using alternating current (ac) and using solar energy, only need to put the above data is divided by 2. 5 you can get. That is, 60 million 100 watts of the LED street lamp, if all adopt the solar power, can save 262 than when all adopt ac power supply. 800 million KWH, and the cost of carbon dioxide emissions for 12. 4 billion dollars. 2. When the ac power supply efficiency will be 15% lower than when solar power efficiency.