Tidal energy uses the tides in the ocean to generate electric energy while biomass makes use of the stored chemical energy from the sun.

Some other notable sources of energy include tidal energy, biomass energy, and some others. Almost 90 per cent of residents in Iceland use geothermal energy to heat their houses. While this source of energy is clean, it is scarce globally. This heat is extracted from underground hot water reservoirs or by human-made reservoirs for direct heating and electricity generation. The earth's centre is very hot, having a temperature of about 6,000☌. Geothermal energy is the utilization of the heat within the earth to produce electricity. Moreover, these dams can be damaging to the environment as the artificial reservoirs can drown both human towns and underwater river habitats. However, these power plants don't work for a long time, as silts and dirt pile up. Hence, it is a more dependable source of clean energy as engineers control the amount of water. The biggest advantage of hydroelectric power over wind and solar energy is that it is not dependent on the weather. The water contained in this artificial reservoir is spun on turbines to produce electricity. Hydroelectric power plants are established on dams which control the water flow, creating a reservoir. Hydroelectric power uses the movement of water current from higher to lower elevations to produce electricity. The world's technical potential for wind energy exceeds global electricity production. Turbines located on land (onshore) or sea or freshwater (offshore) are used to harness the energy from moving wind. In 200 BCE, people used windmills to grind grain in the Middle East and pump water in China. 5,000 years ago, ancient Egyptians made boats powered by the wind. Wind energy has been used since ancient times to power activities in civilisation. Solar panels convert sunlight into electricity and these panels last for a good 30 years. Research and scale have plummeted the cost of solar energy, making it the cheapest form of electricity. The amount of solar energy that reaches the earth's surface in one hour is more than the planet's total energy requirements for a whole year. The rate at which solar energy is intercepted by the Earth is about 10,000 times greater than the rate at which humankind consumes energy.

The sun provides the world with sustenance. The sun is the ultimate source of energy for all our energy sources and fuel. Solar energy is the most well-known source of renewable energy.

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