Meeting with the world wide expectation, renewable energy has evolved a lot. The use of renewable can be seen in day to day life basically in four areas electricity generation, air and water heating and cooling transportation and rural(off-grid) energy services. The existence of this energy has been find across wide geographical area as compared to other energy sources. Large application of renewable energy has resulted in significant improvement in energy security, climate change mitigation and economic benefits. The use of renewable energy has directed the people to move forward from conventional fuels due to the environmental reasons. Renewable energy can be defines as a form of energy derived from the natural sources which cannot be depleted such as wind or solar power. They are the natural energy present in all forms ranging from sunlight, wind, waves, geothermal heat and tides. There sources are replaced constantly but does not get short. Although there is unlimited supply of the fossil fuels, we should go for the use of renewable energy as it is not only safe for the environment, eco-friendly but also less prone to pollutants if any. The development in renewable technologies has led to human development both way rural and urban. A single form of renewable energy can be further converted into different forms. It won’t be wrong to say that renewable energy is leading to sustainable development.

One of the most prominent and promising renewable energy Biofuels can be converted directly to the liquid fuels. Biofuels is widely used for the transportation. There are various types of Biofuels such as Ethanol, Biodiesel, Bioalcohols, Green Diesel, and Biofuel gasoline, Vegetable Oil, Bioethers, Biogas, Syngas and Solid Biomass Fuels. Ethanol and Biodiesel are the commonly used biofuels. The main aim for introducing Biofuels was to replace Gasoline, Diesel Fuel and Coal. Green Diesel, Biogas. It is having enormous advantage when compared with the fossil fuels such as less greenhouse gases providing greater fuel securities. The use of Biofuel is widely dependent on the land availability. It is made from biological agents such as plant oils or animal through the set of chemical reactions. One of the major advantages for using the Biofuel is that they are renewable energy and don not lead to global warming unlike the fossil fuels. According to few facts, Biofuels is the only renewable energy which can replace the fossil fuels.

Solar Energy is the most promptly accessible wellspring of energy. Sun is the sources of all energies, the primary forms of solar energy are heat and light. It doesn't have a place with anyone and is, in this manner, free. It is additionally the most essential of the non-conventional sources of energy. Since it is non-contaminating and along these lines, helps in decreasing the greenhouse impact. Solar energy can likewise be utilized to meet our power prerequisites. Through Solar Photovoltaic (SPV) cells, sunlight based radiation gets changed over into DC power specifically. Solar Energy is dependable progressing at Solar Transport. Fuel production is also done with the help of high temperature from solar energy. The energy is capture, which is produced at one time and is store for future use. Solar energy free and clean energy and the solar panels can be placed on roofs of houses which makes less occupancy.

The wind is a free, clean and gladly available renewable energy source. In the world, every day wind turbines are capturing the wind’s power and converting it to the electricity. The energy from the wind turns the two or three propeller-like blades around a rotor in windmill. The rotor is connected to the main shaft, and this shaft connected with the generator to create electricity. This source of power generation plays a progressively important role in the way of power in our world. Wind turbines captured the kinetic energy of the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) in the turbines generator or can be convert this mechanical power into useful power like electricity. Now wind power technology is showing rapid growth and much more helpful than conventional power generation.by using this wind energy there is no pollution and less space occupancy and less cost effective. Wind turbines don't deliver air discharges that lead to medical issues like asthma or make corrosive rain or nursery gasses which is involves in coal handling plants.

Geothermal energy is the heat from the Earth and it's a clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles under the surface of the earth, and down even deeper to the extremely high temperatures of molten rock named magma. There are three main types of geothermal energy systems: Direct use and district heating system and Electricity generation in power plants and geothermal heat pumps. The steam rotates a turbine, than the turbine activates a generator, which produces electricity.in the world, there are many power plants still use fossil fuels to boil water for steam. Geothermal power plants, using the steam, produced from reservoirs of hot water found a couple of miles or more below the Earth's surface. heat exchanger-a system of pipes covered in the shallow ground near the building. In the winter, the heat pump removes heat from the heat exchanger and pumps it into the private air delivery system. In the summer, the process is converse, and the heat pump moves heat from the indoor air into the heat exchanger.

Power Building is a sub field of Vitality Designing and Electrical Designing that courses of action with the age, transmission, scattering and utilization of electric power and the electrical contraptions related with such systems including generators, motors and transformers. Anyway an awesome piece of the field is concerned with the issues of three-stage air conditioning power – the standard for liberal scale control age, transmission and scattering over the front line world – an imperative division of the field is stressed with the change among air conditioning and DC control and the change of specific power frameworks for instance, those used in flying machine or for electric railroad systems. The Power Frameworks were getting more profitable with taking a break and have transformed into a middle district of Electrical Building field.