The Main Reasons to Adopt Solar Energy

Humans have been using solar energy for as long as they have existed on Earth. From as far as 5,000 years ago, people worshipped the sun. Walker gives the examples of Egypt where Ra, the sun-god, was considered to be Egypt’s first king and Mesopotamia where Shamash, the sun-god, was immortal and equated with justice (2). Today, the sun is said to be the nearest star to the Earth without which no life would be on the planet and has consequently been used for various activities in the everyday life of humans including heating, drying clothes and drying grains. Plants manufacture their food using sunlight and animals feed on these plants. Furthermore, decayed plants produce oil, natural gas, and coal used today, thus the argument by Kleissl that fossil fuels are in real sense sunlight stored millions of years back (12). Thus, solar energy is responsible for our energy needs.
Every time the Earth is hit by solar beams, it is irradiated by adequate energy to supply energy needs. According to National Geographic, solar energy refers to the technology that harnesses the energy from the sun so as to make it useable. This energy contributes less than 10% of 1% of the worldwide energy demand. It could be converted into electrical, thermal and chemical energy forms as noted by Kleissl (2). The technologies used to execute this process are many and each aims at absorbing maximum sunlight and converting the absorbed sunlight energy into electricity.
The&nbsp.first technology is referred to as photovoltaic, PV, systems. This uses semiconductor materials to directly convert light into electricity through photoelectric effect (Kleissl 2). Depending on the wavelength and intensity of the solar irradiation and semiconductor composition, PV technologies absorb solar photons which Walker describes as light particles that comprise the individual energy units (76).&nbsp.

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