Types of Green Energy

Green energy is created from natural resources that do not cause harmful pollution to Earth’s surface or atmosphere. With the concern of global warming and depleting natural resources, environmentally friendly alternatives are needed. Earth’s sun, water and wind power have been used to operate machinery and generate power since ancient times. This article describes the different types of green energy that are currently being considered as alternative sources of power.

Hydropower

1. Hydropower converts water from rivers into usable energy released from turbines. Before commercial electric power, it was used for irrigation and operation of machinery. Water wheels and mills produced flour from grain and sawing stone and wood. Today, it is considered very expensive and difficult to build hydropower plants to produce mass amounts of electricity. There are also concerns that their usage may affect wildlife and change the quality of the water.

Geothermal

2. Geothermal energy is produced from steam or hot water from under the Earth’s surface. The steam powers electric generators by rotating turbines. One use for it is heating buildings. It is not widely available due to the lack of natural land sites. There are also concerns that geothermic fields may eventually deplete. The largest sites are in California, called the “Geysers.” It is a green energy due to its low emissions. Its production is not affected by weather changes and can continuously work day and night. There are also some concerns about geothermal fields affecting the surrounding land’s stability.

Wind

3. Wind can be used to create energy by rotating large propellers like blades around a hub. The blades slow down the speed of the wind it captures and channels it to a generator that produces electricity. Wind energy usage worldwide is very small; the technology is expensive and its machinery is considered to be noisy. The few wind energy companies that produce electricity are privately owned and sell their electricity to public utilities. The energy it produces generates no pollution and has been used to power homes, farms and ranches.

Solar

4. Solar is another form of green energy. Photovoltaic cells can absorb light from the sun to capture electrons and use them to generate electricity. The sun has been used as a source of energy since ancient times. It gained some popularity after the energy crisis of 1973. However, it is still considered to be expensive due the cost to produce the photovoltaic celled panels needed to generate energy. These types panels are usually large and take up a lot of space. Solar energy is also inconsistent and needs a large surface area to generate enough electricity on a large scale. Despite its setbacks, solar energy is being used to power some homes, cars and in agriculture.

Hydrogen

5. Hydrogen is another source of energy that is eco-friendly. It’s a common element that can produce an unlimited amount of energy using water and electricity. Hydrogen was once thought to be too dangerous to work with, but it is now being considered as a source of fuel for vehicles. No emissions are created when used in its purest form. Only water is released as a result. It is expensive to produce and store. More research and time will be needed before it could be used on a worldwide scale. If hydrogen energy is produced by using other green sources such as wind or solar, it will decrease the dependence on fossil fuels as a resource.

Article Source:-

http://www.ehow.com

Environmental Services

Would you like to find the best cheap car insurance broker? An independent cheap car insurance broker is the best type of broker you should work with. This type of agent will be able to give you a totally personalized service and coverage because he has connections to multiple companies as well as the ability to impartially choose the coverage, service, and rate as long as it suits you well.

Fire Alarm Systems
Seo Glasgow

builders in Newcastle – Find Builders in Newcastle upon tyne, professional local Builders in Newcastle upon tyne with contact details, reviews, directory listing of Builders in Newcastle upon tyne, and special offers on the your local tradesmen Builders directory.

Buy phentermine 37.5 mg at http://www.usacapsule.com

For an auto insurance company, it could be wise if you added some safety features or measured into the car. When an insurance company is aware that your vehicle is a lot secure then there is a lot of possibility that the amount you will have to pay per year or month will be a lot lesser and cheaper as compared to any other vehicles that do not have any added security. One other point is having a clean driving record could fetch you benefits too.

Water Dispenser – Tycoonita are UK suppliers of water dispensers and coolers for offices, homes & schools, select from mains-fed water dispensers, hot and cold.

a3 flatbed scanner

Web Design London

Refinancing
Super Consultants