The use of solar power began very early in 1891 with the introduction of solar heating. During the 1940’s, solar energy began to be utilized on a larger scale. However, the cost was too high to make it popular and as widely used as it should have been. It was only after 1970 that new advancements in the field improved the methods of using solar energy. With the development in the photovoltaic cells, solar power became an important source of power. The increase in the popularity of solar powered appliances saw a higher demand for solar lights. These sun-powered lights provide a more efficient and useful alternative to the electricity powered lights.
Solar lights are powered by a system of solar cells that are connected in the form of one unit and known as the solar panel. The size and number of the solar panels is dictated by the utility that is being provided the power. For smaller lights like pathway solar lights or lantern solar lights, the solar panel is smaller as compared to other larger pieces of equipment. Sometimes, just one solar panel is used for smaller lights whereas larger lights or utilities may use a combination of many panels, called a solar or photovoltaic array, to provide the required energy.
The Photovoltaic Effect contributes to the ability to use the sun’s energy to power different devices. The term “photovoltaic” refers to the process of solar energy being converted into voltages inside the panel’s cells. These cells are usually made of a silicone based material to provide maximum conduction of electrical charge. When the sun’s energy enters these cells, the Photovoltaic Effect begins to convert this energy into electrical energy that is then stored in the panel’s battery.
If explained in simple terms, a number of small solar cells absorb and save the energy of the sunlight and charge the batteries of the solar lights. After sunset, these batteries are automatically turned on and use the solar battery to keep the lights on through the night or according to the quantity of power they have saved.
Solar panels come in all shapes and sizes in addition to choices in the power they provide. Whatever application you wish to use will help to determine the output required. The solar panel needs to be weather proof and efficient. Most solar appliance providers will ensure a ten-year warranty, however, the user’s care and handling makes all the difference.
It is worth noting that the usual items in solar lights installations are the light itself, the photovoltaic array of solar panels, batteries, the wiring for interconnection and an inverter. The most popular use of solar power has so far been in outside solar lights like the pole solar lights that are usually installed in streets. Like most things, the cost is an important element in determining whether you will buy or not. If you go for cheap solar lights, the odds are that you will get what you pay for. Buying something that is cheap may prove to be expensive after a few years. The efficiency and durability of the solar panels and the accompanying batteries depends, obviously, on the standard of materials used for their construction. Therefore, where an expensive installation may cost more, it will definitely last longer.
