Renewable energy is an energy source collected from renewable resources, which are naturally replenished on a human timescale, including carbon-neutral sources like sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy often referred to as clean energy, comes from natural sources or processes that are constantly replenished. For example, sunlight or wind keeps shining and blowing, even if their availability depends on time and weather. Renewable itself defines as something which can be renewed i.e. refresh or remade from existing. So something which keeps ongoing and replenishes itself is called renewable energy, such as energy generated from tides, waves, winds are a few examples. Since these energy generators are naturally found and don’t cause much harm to the surrounding and therefore provide enough energy, hence it is termed as renewable energy.
Renewable energy aids preserve the nation’s fundamental resources and provide secure power supplies and fuel diversification, which intensify energy security and reduce the hazard of fuel spills while lessening the demand for shipped fuels. Producing energy that generates no greenhouse gas emissions from fossil fuels is an added advantage. It diminishes some kinds of air pollution. It also meets the varying energy supply and lessens the dependency on imported fuels. Using more renewable energy can decrease the prices of non-renewable fuels and demand for natural gas and coal by increasing engagement and broadening green energy supplies. Renewable energy sources will be the most suitable alternative for reducing pollution, improving the economy, energy security, and job possibilities; also, poverty will be diminished because most poor people rely on natural resources. The consumers will be provided with electric power at a low cost as compared to that of conventional energy sources, and the overall economy will be enhanced because there will be multiple options to generate power using different renewable energy sources present. A transformation of the standard is obvious where the benchmark for the economic advancement of a country is now based on its potential to optimally appropriate the renewable energy sources and the diversified management of the power obtained from such renewable energy sources, like solar, wind, hydro, biomass and waste to energy.