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 alternative energy sources for the home. Show all posts
Showing posts with label alternative energy sources for the home. Show all posts

Tuesday, March 2, 2010

The Costs Of Solar Energy

8:12 AM  , ,   No comments

The Costs Of Solar Energy
 A lot of the environmental costs of solar depend on how the panels and batteries are produced, transported and disposed of and most importantly how the energy is stored. As renewable energy grows, storage will become a greater problem. In general, we would be better off producing energy like the sun (fusion) than trying to capture the sun's energy. http://news.stanford.edu//store-electric-grid-030513.html

Stanford scientists calculate the carbon footprint of grid-scale battery technologies

The fossil fuel required to build grid-scale batteries



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Fusion does not produce any toxic waste, either -- http://news.yahoo.com/solar-industry-grapples-hazardous

Solar industry grapples with hazardous wastes


SAN FRANCISCO (AP) - Homeowners on the hunt

news.yahoo.com By JASON DEAREN

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One of my main concerns with solar is the cost to the environment if they are not put on already existing impervious surfaces. Solar panel farms have many negative impacts on plants and wildlife, not to mention, robbing the Earth's surface of the energy being harvested by the panels.

Other than fusion, the only other method to create clean energy has to do with solar and turning water into electricity -- The Economics of Turning Water into Electricity.

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