The cost of solar led street light really is too high

Solar LED street light, high cost. Originally LED street lamp cost is high, and the cost of the solar LED street lamp is higher. This is mainly because of high cost of solar panels. In fact, the unit price of solar panels are rapidly year by year

solar LED street light cost is too high. Originally LED street lamp cost is high, and the cost of the solar LED street lamp is higher. This is mainly because of high cost of solar panels. In fact, the unit price of solar panels is rapidly reduced year by year.

now, for example, the unit price is about $10 per watt ( Is practical for 12 yuan/tile, but next year is likely to fall for 10 yuan/tile, for calculating the sake of simplicity, is assumed to be 10 yuan/w) Half, which is about two years ago. For a 100 - watt LED street light, even if it requires 300 wp solar panels, so its cost is 3000 yuan. And about 100 watts of the LED street lamp can take the place of 250 w high pressure sodium lamp, 250 watts of street lamp, assuming lights for 10 hours a day, so electricity 2 a day. 5 KWH, electricity 912 a year. 5W。 If per degree 0. 8 yuan, the year need to pay the electricity charge 730 yuan. 4 years down, save the electricity can compensate the cost of solar panels.

in fact, the LED street light, the situation is still far from it. Solar LED street lights are not primarily electricity savings, but the cost of cable and buried cable construction costs. Take 10 kilometers ( 666) Alternating current (ac) street lamps, the cost of the cable is 1. 5 million yuan, allocation to each lamp is 2252 yuan. Plus buried cable laying cost 300000 yuan, each lamp that is allocated 450 yuan, because before each cable has a pressure drop and requires a step-up transformer of electric power transmission and distribution equipment such as 2 million yuan, the allocation to each one is 3003 yuan, all of these costs add up to 5705 yuan, has not calculated inspection Wells 300 yuan/lamp, etc. All of these together, would have more than the initial investment of solar LED street lamps, so save electricity by solar LED street lamp is a kind of pure income. From the above analysis completely don't have to worry about the high cost of solar LED street light.