Solar energy is already well known since the ancient times and has been harnessed by the humans using the ever evolving technologies. However, the usage of solar energy has always been limited because the limited ways of storing the solar energy which was harnessed as spare energy which can be use some other time after the harnessing process. The storing of this energy is important because solar energy can be harnessed only when there is enough sunlight and solar energy is not available at night.

Studies have been done to improve the storage of solar energy so that solar powered devices like the solar garden light can be use at night. What is the point if the solar garden light can only be use when there is sunlight while without the sunlight, it loses ... Read more »