What is renewable energy?
Renewable energy, often referred to as clean energy, comes from natural sources or processes that are constantly replenished. For example, sunlight or wind keep shining and blowing, even if their availability depends on time and weather.
Types of renewable energy source
1. Solar Energy
Solar, or photovoltaic (PV), cells are made from silicon or other materials that transform sunlight directly into electricity. Distributed solar systems generate electricity locally for homes and businesses, either through rooftop panels or community projects that power entire neighborhoods.
2. Wind Energy
3. Biomass Energy
Biomass is organic material that comes from plants and animals, and includes crops, waste wood, and trees. When biomass is burned, the chemical energy is released as heat and can generate electricity with a steam turbine.
4. Geothermal Energy
Earth’s core is about as hot as the sun’s surface, due to the slow decay of radioactive particles in rocks at the center of the planet. Drilling deep wells brings very hot underground water to the surface as a hydrothermal resource, which is then pumped through a turbine to create electricity. Geothermal plants typically have low emissions if they pump the steam and water they use back into the reservoir. There are ways to create geothermal plants where there are not underground reservoirs, but there are concerns that they may increase the risk of an earthquake in areas already considered geological hot spots.
The Advantages of Renewable Energy Resources
1) A Fuel Supply That Never Runs Out
As the name suggests, renewable energy is created from sources that naturally replenish themselves – such as sunlight, wind, water, biomass, and even geothermal (underground) heat.
2) Cleaner Air and Water
Renewable energy creates no pollution, waste, or contamination risks to air and water. And while the COVID-19 lockdowns gave us a glimpse of clear skies in major cities all over the world, renewable energy has the potential to make clean air the new normal.
3) Renewable Energy Creates New Jobs
With an increasing focus on global warming and many governments setting ambitious carbon-reduction goals, one of the surprising renewable energy advantages is that it has quickly become a major source of new job growth.
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