There are plenty of sources online that provide solar energy information and most of them say the same thing. The sun is a free source of energy that does not harm the environment and there is an unlimited supply of it available.
There is no depletion of any precious resource and it is required by green plants to replenish the food supply. Without sunlight, plants would not be able to create chemical energy through photosynthesis. Without plants, the food supply would dwindle and disappear.
A single sixty watt bulb can add as much as fifty dollars to the average annual electric bill. That money can be saved by replacing the bulb with a solar lamp. Solar lamps do have a disadvantage. They do not burn nearly as bright. For this reason, they are not recommended for use as security lights.
Solar energy works similar to something that glows in the dark. Exposing the object to light activates the glow. The longer the exposure, the brighter the glow and the longer it will last.
Solar lamps are charged by the sunlight during the day. The nickel cadmium battery attached to the lamp stores the energy. As soon as the unit detects a decrease in available light, it activates the lamp and turns on automatically.
On a large scale, harvesting solar energy is an expensive project. Many people have seen solar panels set up in arrays and wonder, “How do solar panels work?” Each panel contains a series of solar cells that are connected together. The individual cells generate the electricity but a panel can only provide a small amount of power by itself. Because these cells work by converting light energy to electricity, they are also known as photovoltaic panels. Many solar panels linked together make up a solar power plant.
One disadvantage to relying on solar energy is the inability to adequately heat a house when there are fewer daylight hours during the winter. Still, the Romans were onto something when they first used solar energy in the sixth century.