Types of Renewable Energy

Published on: Feb 25 2011 by Shenron

Renewable energy is although becoming more common around the world but still not leading power supply. Biofuels, biomass, hydro power and geothermal are basic types of renewable energy. All of these energy sources are a substitute customary energy production and in this manner our track on the environment can be reproduced and drop. Scientists now days have been evaluating and generating energy sources as an option to conventional energy sources as we are dependant upon our natural resources to fulfill our requirement. An energy which can be generated in less span of period is called renewable energy.


Hydropower is the biggest supply of renewable energy. 10% of the nations electricity demand is fulfilled with renewable source of energy. Currently 77,000 Megawatts of hydropower are adequate to meet the demands of 35 million homes with energy. Flowing water which comes from rivers and released through turbines is converted into utilizable energy produces hydropower. It can mightily hurt fish and wildlife, transfer people and change the quality of water although this power supply does not discharge pollution. To decrease the loss of aquatic life improved and expensive technology is used but it takes enough time to make.

Renewable energy is getting improved greatly. Energy prices have fallen. New vehicles with superior fuel system and different fuels as Ethanol are introduced with technological improvement.


Biomass composed of about 7000 Megawatts of renewable power. Industrial processors such as such as forestry and wood products, agriculture and wood products, and construction and transportation shoot biomass energy. It can put back coal in power plants as it produces less amount of sulfur dioxide than coal.

Mill actions looked the basic source of biomass power in the U.S, but in Europe urban wood waste is the main source of bioenrgy. Remaining third world countries build timber for the main source of energy.

International Energy Agency shows the statistics that 11% of the world originates its energy from biomass while developing nations use about 35% and poorest ones utilize approximately 90%.

Biomass is converted into utilizable power is through gasification by altering it to gas and finally burn in a gas turbine.

Geothermal Energy

Geothermal energy is able to generate about 2,800 Megawatts of energy per year, or roughly 2% of the energy in the U.S. Naturally occurring steam and hot water from under the Earth’s surface are the means of geothermal energy.  Electric generator powers in results of the steam rotation a turbine. Hot water can also be used to directly warm buildings. A problem with geothermal energy is that land locations are not easy to find and are very rare. But it is very cost effective and reliable.

Wind Energy

Electricity is produces .1% through wind energy which generates almost 2,500 Megawatts of energy. The wind revolves around a focal point which is linked to the main shaft which turns a generator. The required energy influenced the size of turbines as small wind turbines are generally used for homes, farms and ranches. The wind energy can be used in the manner of graining grain and pumping water.

Wind is divided among 7 categories in which 7 being the highest one and 1 being the lowest. A fine wind is the supply which has a class of 3 or superior is the east coast and among the Appalachian Mountains. North Dhaka is known as a tremendous wind source.

The problems of the wind power are expensive technology, noisy machinery; many birds became dead by going inside the turbines and finally wind might not available all the time in the year.

Photovoltaic (PV) Cells

Sunlight is the source through which PV cells generate electrical energy. The material which is used in computer ships is like PV cell’s material which absorbs sunlight to free the electrons from atoms and permits them to create current. PV cells are very trustworthy which do not create impurity and they also don’t need great protection.

It is good to use renewable energy but still we have to use some kinds of fossil fuels. Best choices can be make by adopting ways such as natural gas for water heating and power appliance which is not only healthy for the environment but also less costly.

The disadvantage of this using this energy source is that it is costlier than other types of power sources and works sufficiently in sun shine.

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