The demand on electrical energy is rapidly increasing. Everything around us requires electrical energy either during its production or usage stage. Sustainability has become the main concern nowadays as the availability of fossil fuels is limited.

Renewable energy sources such as wind, hydroelectric power, solar, and geothermal energy are generally far more sustainable than fossil fuel sources. However, some renewable energy projects, such as the clearing of forests for the production of biofuels, can cause severe environmental damage.

The global energy system, which is 85% based on fossil fuels, is responsible for over 70% of the greenhouse gas emissions that cause climate change. The burning of fossil fuels and biomass is a major contributor to air pollution. More than 750 million people lack access to electricity and over 2.6 billion rely on polluting fuels such as wood or charcoal to cook.

To get rid of the pollution, which is a global problem in recent days, we need to shift from non-renewable energy to renewable energy like solar energy. If one sets up a solar panel in the rooftop of the house, office the annual charges of the electricity will reduce.

Solar energy is a renewable energy because it will never end as long as the sun remains. Solar energy also a pollution-free energy because there are no harmful gases, chemicals, fly ash produced during the production of solar energy.

Therefore, there is need for countries to invest in sustainable renewable systems and prioritise energy efficient practices.