Most of the times, in your village or town you see the street lights still lighting in the morning also. In fact, a person is usually appointed by the local civic body to switch on and off these lights. But when that person forgets sometimes or that person is in some other important work or that person is on leave sometimes, then this may happen. In another scenario, there might not be any specific person to operate this switching. Due to this, another problem often arises is that street lights are not switched on even after sunset.
But what happens if this is the case and what happens if this keeps happening? Yes, as you are righly saying- there will be energy wastage. And this energy losses will lead to wastage of money. Normally if a street light of 40W is ON for 12 hours, then it would consume 480Wh of energy. It is about 0.48 units of electicity bill. If there are 10 such lights, it would be 4.8 units of energy in a day. If this happens twice in month, it would be 10 units per month. So in a year, how much shall you be paying? About Rs.1200 for 10 street lights. Meantime you are also paying about Rs.12000 (About Rs.1000 per month) to the person who is responsible to operate this. That means, for a set of 10 street lights, you are spending about Rs.13200 extra. If there are 10 such sets (100 street lights) in your village, you are spending Rs.1,32,000 (One lakh thirty two thousand) extra annually.
But can you save this extra spending? Would they be available for you for other beneficial civic activities? Yes, we can do this.
We have come up with a Street Light Controller unit. It has an astronomical timer. It switches the street lights ON and OFF as per the sunrise and sunset at your village or town. The sunrise and sunset times of this unit are very accurate because they are based on latitude and longitude of your village or town. Once installed, you will not have to worry about energy wastages due to the lights left on during day time. This is automatic unit so you need not have to employ a person to operate the street lights. You can use that person for other more important activities. And the best part is that no complaints will be there from civilians about no street light at night time.
Concord Street Light Controller