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FCT - FAQ - 0 views

www.fuelcelltoday.com/...faq fuel cell cost
shared by gaworeckilog99 on 24 Sep 13 - No Cached
  • Technological developments are continually lowering the material and component cost of fuel cells and production is being ramped up and automated, allowing economies of scale to be realised.
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Fuel cells, what is a fuel cell, disadvantages, benefits - 0 views

www.altenergy.org/...fuel_cells.html fossil fuels fuel cell disadvantages
shared by streetscor99 on 11 Mar 13 - Cached
  • * Because there is no combustion in a fuel cell, fuel is converted to electricity more efficiently than any other electrical generating technology available today. * There are no moving parts in a fuel cell stack, making them more reliable and quieter than generators. Even the ancillary systems (fans, pumps, controls, etcetera) in a complete fuel cell unit are relatively mature and simple technologies that should prove extremely reliable.
  • In the past, fuel cells were large and extremely expensive to manufacture, just as the first calculators and computers were. But, just like these products, the cost of fuel cells will quickly come down to consumer-affordable levels with mass production. We are currently in a transition period now, where many fuel cell companies are investing literally hundreds of millions of dollars to gear up for mass manufacturing at the same time they are trying to begin to develop a variety of markets for their product.
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Pros and Cons of Geothermal Energy - 0 views

www.energy-consumers-edge.com/cons_of_geothermal_energy.html geothermal cost
shared by glinbizzivic98 on 12 Mar 13 - No Cached
  • glinbizzivic98 on 12 Mar 13
     
    "You can drill a hole just about anywhere to get this abundant, high temperature geothermal energy, but the hole would be miles deep, and dry. It is possible to use that heat resource, but terribly expensive, and drilling is just the beginning of the expensive engineering problems of utilizing extremely deep geothermal energy resources."
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Are Fuel Cell Vehicles Too Expensive For Mass Production by 2015? - 0 views

www.greencarreports.com/...ve-for-mass-production-by-2015 fuel cell cost
shared by olearydev99 on 12 Mar 13 - No Cached
  • olearydev99 on 12 Mar 13
     
    "An FCV is currently valued at around US$1.1 million. Toyota leases its FCV for US$9,400 a month, or US$110,000 a year.""
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Solar Homes and Solar Collectors - 0 views

jc-solarhomes.com/index.html solar solar power facts
shared by butlerlex99 on 12 Mar 13 - No Cached
  •    Solar energy is our birthright like the air we breathe or the water we drink. Solar Home Plans and  cost effective   Solar Hot Water Projects  are the gateway into a "Solar Age"  of energy independence. Fossil fuels are no longer necessary to keep the wheels of civilization turning. Build your own solar heating system.  Explore the Strawberry Fields Book Store  for more information. Alternative energies like solar energy will increase in value as fossil fuel prices escalate making energy efficient,  solar houses more valuable. Solar collectors, solar hot water systems, heat storage vaults, photovoltaic electricity, solar panels, and solar greenhouses will soon become the standard rather than the exception to the standard in the near future According to Buckminster Fuller "We have wondered too far from the roots." An energy crisis can only be avoided only if we learn to rely on a diffuse, sustainable resource like the sun. Become part of this green economy and travel on the  Green Train and learn about Solar Rebate Incentives and Cheap Electricity                                                                             
  • butlerlex99 on 12 Mar 13
     
    solar energy
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Environment for Kids: Wave and Tidal Energy - 0 views

www.ducksters.com/...wave_and_tidal_energy.php history
shared by gonzalezisa00 on 12 Mar 13 - No Cached
  • There are also three main ways that tidal energy is harnessed: Tidal Barrages - A tidal barrage works like a dam. When the tide goes high, the reservoir fills up. When the tide drops the dam lets the water out. In both directions the moving water can spin the blades of turbines to create electricity. Tidal Fences - These are smaller structures than a barrage. A number of vertical turbines form a fence between two land masses. When the tide moves in or out, the turbines spin and generate electricity. Tidal Turbines - These are individual turbines placed anywhere there is a strong tidal flow.
  • Tidal power to turn water wheels and grind grains was used as far back as Roman times and the Middle Ages. The idea of using tidal power for electricity is fairly recent, but the costs have been too high to make it a major energy source. Recent technological advances have shown that it could become a competitive and viable source
  • Tidal turbines are more expensive to build and maintain than wind turbines, but produce more energy. They also produce energy more consistently as the tide is continuous while the wind doesn't always blow.
  • ...1 more annotation...
  • Concepts for wave energy have existed since the 1800s, however modern wave technology began in the 1940s with the experiments of scientist Yoshio Masuda
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Wind energy FAQ | EWEA - 0 views

www.ewea.org/...wind-energy-faq wind climate change
shared by carusonepay99 on 12 Mar 13 - No Cached
  • Each year we release millions of tonnes of carbon dioxide by burning fossil fuels (oil, coal and gas). In 2010, on average, every single EU citizen emitted 9.4 tonnes of CO2 – that’s enough to fill ten three-storey buildings. For every kWh of wind energy that you use, you will save approximately 696g of CO2. EWEA estimates that wind energy avoided the emission of 140 million tonnes of CO2 in 2011 in the EU, equivalent to taking 33% of cars in the EU – 71 million vehicles – off the road. This avoided CO2 costs of around €3.5 billion (assuming a price of €25/t CO2). Choosing how your electricity is produced plays an important role in protecting the climate: it’s easy to switch to a green power provider; you request the change and your current and future providers will organise it themselves.
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Photovoltaics - Timeline of the History of Photovoltaics - 0 views

inventors.about.com/...Photovoltaics.htm solar convert
shared by whalenkil98 on 12 Mar 13 - Cached
  • 1839: Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the photovoltaic effect while experimenting with an electrolytic cell made up of two metal electrodes. 1873: Willoughby Smith discovered the photoconductivity of selenium.
  • kenyonlau99 on 12 Mar 13
     
    "Today's photovoltaic systems are used to generate electricity to pump water, light up the night, activate switches, charge batteries, supply power to the utility grid, and much more. 1839: Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the photovoltaic effect while experimenting with an electrolytic cell made up of two metal electrodes. 1873: Willoughby Smith discovered the photoconductivity of selenium. 1876: Adams and Day observed the photovoltaic effect in solid selenium. 1883: Charles Fritts, an American inventor, described the first solar cells made from selenium wafers. 1887: Heinrich Hertz discovered that ultraviolet light altered the lowest voltage capable of causing a spark to jump between two metal electrodes. 1904: Hallwachs discovered that a combination of copper and cuprous oxide was photosensitive. Einstein published his paper on the photoelectric effect. 1914: The existence of a barrier layer in PV devices was reported. 1916: Millikan provided experimental proof of the photoelectric effect. 1918: Polish scientist Czochralski developed a way to grow single-crystal silicon. 1923: Albert Einstein received the Nobel Prize for his theories explaining the photoelectric effect. 1951: A grown p-n junction enabled the production of a single-crystal cell of germanium. 1954: The PV effect in Cd was reported; primary work was performed by Rappaport, Loferski and Jenny at RCA. Bell Labs researchers Pearson, Chapin, and Fuller reported their discovery of 4.5% efficient silicon solar cells; this was raised to 6% only a few months later (by a work team including Mort Prince). Chapin, Fuller, Pearson (AT&T) submitted their results to the Journal of Applied Physics. AT&T demonstrated solar cells in Murray Hill, New Jersey, then at the National Academy of Science Meeting in Washington, DC. 1955: Western Electric began to sell commercial licenses for silicon PV technologies; early successful products included PV-powered dolla
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Lock in low electricity rates with Sungevity - 0 views

www.sungevity.com/solar solar energy low electricity rates
shared by dextereli99 on 12 Mar 13 - No Cached
  • Go solar and take a stand against rising energy prices You can count on electricity costs going up every year. But there’s a way to lock in low rates and take back the power from your utility company. Go solar with Sungevity. And while everyone else’s bills go up, you can actually save money. Plus, you’ll feel good about your energy choices too.
  • dextereli99 on 12 Mar 13
     
    it saves you money
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The Cost of Biofuels in Guatemala - Photographs - NYTimes.com - 0 views

www.nytimes.com/...06guatemala-15.html current biofuels
shared by rainwateremi99 on 12 Mar 13 - No Cached
  • Now that the United States is using 40 percent of its crop to make biofuel, it is not surprising that tortilla prices have doubled in Guatemala, which imports nearly half of its corn. 
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tidal energy - 0 views

www.odec.ca/...tidal.html tide energy cost
shared by tavarreskat99 on 12 Mar 13 - No Cached
  • Tidal energy is the utilization of the variations in sea level caused primarily by the gravitational effects of the moon, combined with the rotation of the Earth.
  • Tidal energy is a clean, renewable energy resource, but its environmental impacts and accessibility, limit its potential to become a major provider of electricity. Where tidal energy is a viable resource, it may prove to be expensive at first, but economical in the long run if the technology improves.
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How Tidal Power is Riding the Crest of a Wave - 1 views

www.renewableenergyworld.com/...-is-riding-the-crest-of-a-wave tide wave
shared by crandallmad00 on 12 Mar 13 - No Cached
  • The argument for tidal power is overwhelming: it’s a practically infinite supply of clean energy and has one of the smallest carbon footprints of any power source; it’s reliable, cost-efficient, has minimal effect on the marine environment and virtually zero effect on sea-gazing aesthetics. Most importantly, The World Energy Council estimates that the energy that can be harvested from world’s oceans is equal to twice the electricity that the world produces now
  • A reason many energy experts are looking at what tidal may be able to contribute, compared to other renewable sources like wind power, is that the amount of energy generated from a power-generating turbine is proportional to the density of the fluid that flows back and forth – meaning a water turbine has several hundred times the power of an air turbine.
  • Seawater is denser than air; a lot denser – 832 times to be exact, meaning an 8 knot tidal current has more energy than a 380kph wind. This means a wave farm of ‘sea snakes’ – devices built by Scotland’s Pelamis Wave Power – covering half a square mile of ocean could produce 30 MWh of power, which is estimated to be enough for 20,000 homes. A wave farm covering 472 square miles could supply 24 million households – enough for the entire UK.
  • ...1 more annotation...
  • Partly this has been due to the uncertainty of how to harness all this abundant marine energy. While it’s great that there’s the potential to harness up to 153 GW of tidal power in the UK alone,
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What are the advantages and disadvantages of alternative tidal power as an energy source - 1 views

wiki.answers.com/...idal_power_as_an_energy_source tidal energy
shared by tavarreskat99 on 12 Mar 13 - No Cached
  • Advantages: Tidal energy is an alternative energy. The energy produced is clean and non polluting. There is no carbon dioxide or any other by-products released. It produces no greenhouse gases or other waste.It is a renewable energy that will help reduce our reliance on the burning of fossil fuels. There are two tides every day and they can be relied on. The energy is there for the taking.So the electricity supply is constant and efficient.Once you've built it, the energy is free because it comes from the ocean's powerIt needs no fuel.It produces electricity reliably.Not expensive to maintain.Tides are definitely predictable. There are two tides every day and they can be relied on. So the electricity supply is constant. Offshore turbines and vertical-axis turbines are not ruinously expensive to build and do not have a large environmental impact.A plant is expected to be in production for 75 to 100 yearsUses an abundant, inexpensive fuel source (water) to generate powerMay protect coastline against damage from high storm tides and provide a ready-made road bridge
  • Holding back the tide allows silt to build up on the river bed.The dams and barrages sometimes interfere with shipping. You will need to find a way to connect the electricity to the grid.Pose same threats as large dams, altering the flow of saltwater in and out of estuaries, which changes the hydrology and salinity and possibly negatively affects the marine mammals that use the estuaries as their habitatTurbidity decreases as a result of smaller volume of water being exchanged between the basin and the sea.The average salinity inside the basin decreases, also affecting the ecosystemA barrage across an estuary is very expensive to build, and affects a very wide area - the environment is changed for many miles upstream and downstream. Many birds rely on the tide uncovering the mud flats so that they can feed.There are few suitable sites for tidal barrages.Only provides power for around 10 hours each day, when the tide is actually moving in or out.
  • It only provides about 7% of the power needed for England and Wales that means that some people get their energy close to free and some pay a lot of moneyWater is not replenished, it cannot flow away so any dirt or pollution lingers around the coast much longerNeeds a very big piece of sea to be cost effectiveCannot be used inlandBarrage systems require salt resistant parts and lots of maintenanceAffects the lives of the people who rely on fishing for a means of livingLimited because the tide never speeds up or slows down, and occurs on 6 hour cycles. It is also dependent on the fetch distance. The fetch is the distance the tide rises and falls, so some beaches have a very small fetch, and others have a big fetch but hardly any have a large enough fetch to support tidal energy
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Why is tidal power not used more widely - 0 views

wiki.answers.com/...dal_power_not_used_more_widely tidal energy
shared by tavarreskat99 on 12 Mar 13 - No Cached
  • Tidal power is not used more widely because tidal barriers are expensive to build, often in remote locations, have high maintenance requirements, and generate relatively small amounts of power. This makes the cost of power very high, and correspondingly the return on investment capital quite low or even negative. In summary, it is promising but needs more development.
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Environmental impact of wind power - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...ronmental_impact_of_wind_power cost pollution
shared by jack wells on 12 Mar 13 - No Cached
  • Compared to the environmental impact of traditional energy sources, the environmental impact of wind power is relatively minor, slightly higher than the environmental impact of hydro power on a life-cycle basis. Unlike electricity derived from fossil fuel-powered generating plants, wind power consumes no fuel and emits no air pollution in operation. As well, wind power consumes no fuel in operation, unlike nuclear power plants which do.
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Wave Power - 1 views

www.climate-change-guide.com/wave-power.html wave cost co2 sustainable
shared by tvedepai00 on 12 Mar 13 - No Cached
  • Wave power does not cause any greenhouse gases and is a form of renewable energy as we will simply never run out of waves.Even though equipment represents a considerable financial commitment, the fuel is free of charge and never limited by geopolitical borders. Finally, the damage to the natural environment is considered to be minimal and thus it will help stop climate change.
  • fieldingbry99 on 12 Mar 13
     
    "Wave power does not cause any greenhouse gases and is a form of renewable energy as we will simply never run out of waves. Even though equipment represents a considerable financial commitment, the fuel is free of charge and never limited by geopolitical borders. Finally, the damage to the natural environment is considered to be minimal and thus it will help stop climate change."
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Price List | Bergey Wind PowerBergey Wind Power - 0 views

bergey.com/price-list
shared by cottonetar98 on 12 Mar 13 - No Cached
  • It’s like buying vs. renting a home. Over the next 10 years a typical homeowner or small business will pay $18,000 to over $50,000 in electric bills, at rates that often increase faster than inflation. When you choose a Bergey wind system you take the same monthly expense and invest it in a tangible asset. Once your Bergey turbine is paid off, you will enjoy more money in your pocket every month for the next 20 – 40 years. Tax credits and rebates make it affordable. Small wind turbines qualify for a 30% federal tax credit and, for businesses, accelerated depreciation.  USDA grants are available for farmers, ranchers, and rural businesses.  Many states offer additional incentives (see www.dsireusa.org).  These incentives make owning a Bergey wind turbine surprisingly affordable.
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How is Biofuel Made - 0 views

www.agrabiofuels.com/howisbiofuelmade.html biofuel convert
shared by greenhan99 on 08 Mar 13 - No Cached
  • Where does the first phase for biofuel production begin? The sun takes credit for the very first step in this process. The sun helps to grow crops and plants, which are then eventually used to produce biofuel. Biofuel is actually derived from biomass, which can come from gas, solid and liquid states.
  • These crops that are specifically grown to be used to produce biofuels are referred to as feedstocks. These feedstocks are the raw and unprocessed form that the bio fuel is derived from. Among the more common types of feedstocks and crops that are used for the production of biofuels are corn, sugar crops, and forests. In addition, even some of the byproducts of materials such as those that come from wood can be used in this process. These special byproducts are often converted to the liquid forms of biofuels, which include methanol and ethanol. With the ability to use these byproducts, production methods have gotten a lot less expensive since there is much less waste involved.
  • In addition, there are also certain natural oils that are also used to help produce this special type of fuel. For example, oil palm, soybean and algae are surprisingly capable of being burned directly in certain types of furnaces and engines and can also be blended with certain types of fuels or petroleum based fuels for a more powerful blended mixture.
  • ...2 more annotations...
  • Where does the first phase for biofuel production begin? The sun takes credit for the very first step in this process. The sun helps to grow crops and plants, which are then eventually used to produce biofuel. Biofuel is actually derived from biomass, which can come from gas, solid and liquid states.
  • Another means of producing biofuel that has proven to be especially efficient and cost effective is the conversion of vegetable oil to a burnable fuel that can be used with most types of engines.
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How Geothermal Energy Works | Union of Concerned Scientists - 1 views

www.ucsusa.org/...w-geothermal-energy-works.html geothermal sustainable
shared by knightoli99 on 11 Mar 13 - No Cached
  • Many regions of the world are already tapping geothermal energy as an affordable and sustainable solution to reducing dependence on fossil fuels, and the global warming and public health risks that result from their use. For example, more than 8,900 megawatts (MW) of large, utility-scale geothermal capacity in 24 countries now produce enough electricity to meet the annual needs of nearly 12 million typical U.S. households (GEA 2008a). Geothermal plants produce 25 percent or more of electricity in the Philippines, Iceland, and El Salvador.
  • parkergar99 on 11 Mar 13
     
    "The U.S. Department of Energy found that heat pumps can save a typical home hundreds of dollars in energy costs each year, with the system typically paying for itself in 8 to 12 years. Tax credits and other incentives can reduce the payback period to 5 years or less.10                                                  "
  • knightoli99 on 11 Mar 13
     
    "Heat from the earth can be used as an energy source in many ways, from large and complex power stations to small and relatively simple pumping systems. This heat energy, known as geothermal energy, can be found almost anywhere-as far away as remote deep wells in Indonesia and as close as the dirt in our backyards. FROM OUR BLOG The Latest on Renewable Energy from Our Experts and Analysts Will Clean Energy Research and Development Be Sequestered? Laura Wisland PTC Extension Already Making a Big Difference for Wind Steve Clemmer The Local Energy Movement: Coming to a Town Near You Laura Wisland Subscribe to the Energy blog feed Many regions of the world are already tapping geothermal energy as an affordable and sustainable solution to reducing dependence on fossil fuels, and the global warming and public health risks that result from their use. For example, more than 8,900 megawatts (MW) of large, utility-scale geothermal capacity in 24 countries now produce enough electricity to meet the annual needs of nearly 12 million typical U.S. households (GEA 2008a). Geothermal plants produce 25 percent or more of electricity in the Philippines, Iceland, and El Salvador."
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