Biofuels have been around as long as cars have.

A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms.

Generating Electricity from Wing Waves.

Wind turbines, like windmills, are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more aboveground, they can take advantage of the faster and less turbulent wind.

Producing electricity from solar energy.

Solar energy is a free, inexhaustible resource, yet harnessing it is a relatively new idea. The ability to use solar power for heat was the first discovery.

Turbines catch the wind's energy with their propeller-like blades.

A blade acts much like an airplane wing. When the wind blows, a pocket of low-pressure air forms on the downwind side of the blade.

Solar energy may have had great potential

Solar technology advanced to roughly its present design in 1908 when William J. Bailey of the Carnegie Steel Company invented a collector with an insulated box and copper coils.

We have been harnessing the wind's energy for hundreds of years.

For utility-scale sources of wind energy, a large number of wind turbines are usually built close together to form awind plant.

Biofuels are produced from living organisms.

In order to be considered a biofuel the fuel must contain over 80 percent renewable materials.

Geothermal energy is the heat from the Earth.

Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.

Geothermal heat pumps can tap into this resource to heat and cool buildings.

A geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building.

In the future, civilization will be forced to research and develop alternative energy sources.

Possession of surplus energy is, of course, a requisite for any kind of civilization, for if man possesses merely the energy of his own muscles, he must expend all his strength - mental and physical - to obtain the bare necessities of life.

Showing posts with label types alternative energy. Show all posts
Showing posts with label types alternative energy. Show all posts

Saturday, 14 May 2011

Iea Report Says Solar Could Be Largest Source Of Electricity By 2050

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Iea Report Says Solar Could Be Largest Source Of Electricity By 2050
WASHINGTON, DC - Calling for "clear, credible and consistent signals from policy makers," the International Energy Agency (IEA) today released two reports saying solar could be the world's largest source of electricity by 2050. Solar Energy Industries Association (SEIA) president and CEO Rhone Resch welcomed the reports, noting that solar is already the fastest growing renewable energy source in the U.S. and accounted for more than 50 percent of new generation capacity in the first half of 2014. "As these reports show, the future of solar is strong," Resch said. "Today, the solar industry employs 143,000 Americans and pumps nearly 15 billion a year into the nation's economy. By any measurement, policies such as the federal solar Investment Tax Credit (ITC), are paying huge dividends for both the U.S. economy and our environment. But, as the IEA noted, we need to maintain and even expand smart public policies in order to give solar a fighting chance against entrenched energy sources, such as fossil fuels - and we urge Congress to heed the IEA's recommendation to create more certainty in the marketplace and secure clean, renewable energy for future generations." According to the two IEA reports, solar photovoltaic (PV) systems could generate up to 16 percent of the world's electricity by 2050 while concentrating solar power (CSP) plants could provide an additional 11 percent. Combined, these technologies could prevent the emission of more than 6 billion tons of carbon dioxide per year by 2050 -more than all current energy-related CO2 emissions from the United States or almost all of the direct emissions from the transport sector worldwide today. ### ABOUT SEIA:Celebrating its 40th anniversary in 2014, the Solar Energy Industries Association(R) is the national trade association of the U.S. solar energy industry. Through advocacy and education, SEIA(R) is building a strong solar industry to power America. As the voice of the industry, SEIA works with its 1,000 member companies to champion the use of clean, affordable solar in America by expanding markets, removing market barriers, strengthening the industry and educating the public on the benefits of solar energy. Visit SEIA online at www.seia.org. MEDIA CONTACTS:Ken Johnson, SEIA Vice President of Communications, kjohnson@seia.org (202) 556-2885 Samantha Page, SEIA Press Officer and Communications Manager, spage@seia.org (202) 556-2886
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