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How much CO2 does one solar panel create? | MNN - Mother Nature Network - 2 views

www.mnn.com/...o2-does-one-solar-panel-create solar co2 fossil fuels
shared by dpurdy on 06 Apr 13 - Cached
  • solar panels are at least 20x better on the climate than coal, kWh for kWh.
  • Based on that study, solar PV works out to about 50g of CO2 per kWh compared to coal's 975g of CO2 per kWh, or about 20x "cleaner."
  • dpurdy on 06 Apr 13
     
    Comparison of CO2 from photovoltaics and coal. 
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How we know human activity is causing warming | Environmental Defense Fund - 1 views

www.edf.org/...human-activity-causes-warming pollution Fossil co2
shared by dpurdy on 30 Oct 12 - No Cached
  • The theory of global warming is nothing new. The Nobel Prize-winning chemist Svante Arrhenius first proposed the idea of global warming in 1896. Carbon dioxide, he knew, traps heat in the Earth's atmosphere. He also knew that burning coal and oil releases carbon dioxide (CO2).
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Biofuels | What are bio fuels and how are biofuels made - 0 views

www.biofuels.co.uk biofuel
shared by morrisseygra99 on 22 Oct 12 - No Cached
  • Bio fuels are a viable alternative to fossil fuels.
  • Some examples are that of biodiesel, which entails growing crops that contain high amounts of natural oil then through a process of hydrogenation or refining a more compatible bio diesel, substitute is created.
  • These are examples of first generation biofuels and due to their nature they may or may not be long-term economically or environmentally viable.
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Is Current Wind Growth Sustainable? | Renewable Energy World Magazine Article - 0 views

www.renewableenergyworld.com/...the-big-question1 wind sustainable
shared by tuckeremi99 on 22 Oct 12 - No Cached
  • wind farms are not only capital intensive but also have a long gestation period – could prove to be prohibitive for many potential investors.
  • terms of global policy, governments need to boost investments in onshore and offshore wind generation through the right mix of supportive policies and incentives.
  • wind energy will become even more attractive as it serves as an insurance against future increases in fuel and carbon prices, while reducing our dependency on fossil fuels imported from volatile regions.
  • ...17 more annotations...
  • Both in Europe and in the US, some 40% of all new power generating capacity installed in the past two years was wind energy. If the economic crisis continues, however, the reduction in power demand will start to impact wind energy, simply because of lower demand for new power plants. Nevertheless, the medium and long-term outlook remains very healthy, as political momentum is building towards a low carbon economy, without which humankind will not overcome three of the biggest concerns of our time – climate protection, energy security and the provision of jobs.
  • Wind power’s credentials as a rapidly deployable clean technology have put it at the forefront in the fight against climate change. Neither new nuclear capacity or carbon capture and storage (CCS) will contribute to CO2 reductions within the timeframe that the climate scientists give us. As a no-fuel, no-carbon emissions source of electricity, wind energy will play a big part in reducing carbon emissions before 2020.
  • A key element for policy makers is to dramatically improve competition in power markets, to ensure that investors, rather than consumers, are exposed to
  • The growth in wind power capacity has shown no signs of slowing, even in these tough economic times. For two years running there has been more new wind power capacity installed than any other power generating technology in Europe – including coal, gas and nuclear. In 2009 the European market for wind turbines experienced a 23% growth rate, the same as the average growth rate over the last 15 years.
  • future carbon and fuel price risk.
  • Wind power is a leader now, and will remain so in the future, attracting big investments and creating jobs. There is a boom waiting to happen in offshore wind energy. But, Europe’s ageing electricity grids must be upgraded and extended, and the EU must also pursue a drive to build an offshore grid in the North and Baltic seas that will connect offshore wind farms to the shore, piping vast amounts of CO2-free energy to consumers at affordable prices.
  • cleaner energy
  • he fact that wind is the most cost effective and scalable renewable source of energy.
  • past several years.
  • dynamic growth rate of the
  • Because of the small size of the existing installed base, the offshore wind sector will see higher growth percentages while the number of onshore turbines will continue to outpace those installed offshore.
  • Continued investment in grid infrastructure is critical for growth as well as wind turbine technology investments that improve efficiency and reliability while driving down emissions. Countries with the most efficient and flexible permitting processes will benefit by realizing the installation of the most advanced technology.
  • but renewable sources, and in large part, wind energy, have an extremely important role to play.
  • A fundamental value of wind is that it lowers risk in the overall generation mix by bringing in a fixed electricity cost. You don’t have any fuel risk, so you don’t have these big price spikes that you see when you generate electricity from gas or oil.
  • The wind power market is still intact. Demand for ‘green’ power stations remains unabated and nearly all governments have adopted policies aimed at environmental sustainability.
  • As our industry is still very young, wind power currently contributes only around 1.5% to global electricity supplies.
  • this merely serves to highlight the enormous potential for the future, especially as wind power is not only clean but also inexpensive. This is something that more and more governments and energy companies are realizing.
  • tuckeremi99 on 22 Oct 12
     
    "The growth in wind power capacity has shown no signs of slowing, even in these tough economic times. For two years running there has been more new wind power capacity installed than any other power generating technology in Europe - including coal, gas and nuclear. In 2009 the European market for wind turbines experienced a 23% growth rate, the same as the average growth rate over the last 15 years."Both in Europe and in the US, some 40% of all new power generating capacity installed in the past two years was wind energy. If the economic crisis continues, however, the reduction in power demand will start to impact wind energy, simply because of lower demand for new power plants. Nevertheless, the medium and long-term outlook remains very healthy, as political momentum is building towards a low carbon economy, without which humankind will not overcome three of the biggest concerns of our time - climate protection, energy security and the provision of jobs." "Wind power is a leader now, and will remain so in the future, attracting big investments and creating jobs. There is a boom waiting to happen in offshore wind energy. But, Europe's ageing electricity grids must be upgraded and extended, and the EU must also pursue a drive to build an offshore grid in the North and Baltic seas that will connect offshore wind farms to the shore, piping vast amounts of CO2-free energy to consumers at affordable prices."
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Group items tagged pollution - qmstech2 | Diigo Groups - 0 views

groups.diigo.com/...pollution location mrpurdy
shared by filionmar99 on 22 Oct 12 - No Cached
    • filionmar99
      filionmar99 on 22 Oct 12
       
      read this
  • The major challenge to using wind as a source of power is that it is intermittent and does not always blow when electricity is needed. Wind cannot be stored (although wind-generated electricity can be stored, if batteries are used), and not all winds can be harnessed to meet the timing of electricity demands. Further, good wind sites are often located in remote locations far from areas of electric power demand (such as cities).
  • Although wind power plants have relatively little impact on the environment compared to fossil fuel power plants, there is some concern over the noise produced by the rotor blades, aesthetic (visual) impacts, and birds and bats having been killed (avian/bat mortality) by flying into the rotors. Most of these problems have been resolved or greatly reduced through technological development or by properly siting wind plants.
  • ...1 more annotation...
  • A Renewable Non-Polluting Resource Wind energy is a free, renewable resource, so no matter how much is used today, there will still be the same supply in the future. Wind energy is also a source of clean, non-polluting, electricity. Unlike conventional power plants, wind plants emit no air pollutants or greenhouse gases. According to the U.S. Department of Energy, in 1990, California's wind power plants offset the emission of more than 2.5 billion pounds of carbon dioxide, and 15 million pounds of other pollutants that would have otherwise been produced. It would take a forest of 90 million to 175 million trees to provide the same air quality.
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Green Rock Energy - Geothermal Energy - Sustainability - 0 views

www.greenrock.com.au/geothermalSustainability.php geothermal sustainable
shared by brownale99 on 22 Oct 12 - No Cached
  • The Benefits "Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power. Depending on the nature of the resource and the reservoir, individual production wells have the potential to generate consistent supplies of base load power for decades."
  • Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power.
  • individual production wells have the potential to generate consistent supplies of base load power for decades.
  • ...2 more annotations...
  • Base load electricity generated from geothermal energy is clean, renewable and has minimal impact on the environment.
  • Unlike burning fossil fuels, the process emits no greenhouse gases, pollution or hazardous wastes.
  • messinaaar98 on 22 Oct 12
     
    "The Benefits "Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power. Depending on the nature of the resource and the reservoir, individual production wells have the potential to generate consistent supplies of base load power for decades.""
  • gazdiknic99 on 11 Mar 13
     
    main idea, supporting facts, and conclusion
  • brownale99 on 11 Mar 13
     
    ""Geothermal energy has the potential to generate and deliver sustainable supplies of clean, renewable base load power. Depending on the nature of the resource and the reservoir, individual production wells have the potential to generate consistent supplies of base load power for decades.""
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Pros & Cons of Solar Energy - 0 views

www.clean-energy-ideas.com/..._and_cons_of_solar_energy.html pollution
shared by ackleysam99 on 22 Oct 12 - Cached
  • Solar panels give off no pollution, the only pollution produced as a result of solar panels is the manufacturing of these devices in factories, transportation of the goods, and installation.
  • he production of energy from the use of fossil and some renewable fuels (e.g. wind turbines) can be noisy, yet solar energy produces electricity very
  • quietly
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Solar energy 'cheaper than fossil fuels in 5 years' - 0 views

www.lowcarboneconomy.com/...3442 cost
shared by ackleysam99 on 22 Oct 12 - No Cached
  • Speaking to Silicon.com, the author of The Age of Intelligent Machines, said that nanotechnology could help solve the world's energy crisis and make solar technology cheaper.
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Pros & Cons of Wave Energy | eHow.com - 0 views

www.ehow.com/045_pros-cons-wave-energy.html pollution pros wave energy
shared by hughesacam99 on 23 Oct 12 - No Cached
  • Unlike fossil fuels, wave power doesn't cause air pollution.
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http://ec.europa.eu/research/energy/pdf/hlg_vision_report_en.pdf - 1 views

ec.europa.eu/...hlg_vision_report_en.pdf hydrogen uses future co2
shared by dpurdy on 26 Oct 12 - No Cached
    • slentzkel99
      slentzkel99 on 26 Oct 12
       
      Report on hydrogen economy potential 
  • dpurdy on 26 Oct 12
     
    Challenges Producing hydrogen in the large quantities necessary for the transport and stationary power markets could become a barrier to progress beyond the initial demonstration phase.  Uses: Fuel cells will be used in a wide range of products, ranging from very small fuel cells in portable devices such as mobile phones and laptops, through mobile applications like cars, delivery vehicles, buses and ships, to heat and power generators in stationary applications in the domestic and industrial sector. Future energy systems will also include improved conventional energy converters running on hydrogen (e.g. internal combustion engines, Stirling engines, and turbines) as well as other energy carriers (e.g. direct heat and electricity from renewable energy, and bio-fuels for transport). 
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Winner Announced: Design an Infographic About Energy - Design - GOOD - 0 views

www.good.is/...gn-an-infographic-about-energy sustainable Fossil fuel
shared by dpurdy on 14 Feb 12 - No Cached
  • anonymous on 05 Oct 13
     
    today hindi news,today news talmi,hindi news www.killdo.de.gg
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Biodiesel Fuel Uses - 0 views

www.ultimate-biodiesel-guide.com/biodiesel-fuel-uses.html biofuel uses potential future
shared by smithjul98 on 13 Mar 12 - No Cached
  • There already many biodiesel fuel uses, and as technology continues to develop, so do the opportunities to replace traditional fossil fuels with this viable alternative.
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HowStuffWorks "How Fuel Cells Work" - 0 views

auto.howstuffworks.com/...fuel-cell.htm fuel cell sustainable
shared by Connor Wiggins on 15 Mar 12 - Cached
  • This initiative, supported by legislation in the Energy Policy Act of 2005 (EPACT 2005) and the Advanced Energy Initiative of 2006, aims to develop hydrogen, fuel cell and infrastructure technologies to make fuel-cell vehicles practical and cost-effective by 2020
  • Why are governments, private businesses and academic institutions collaborating to develop and produce them? Fuel cells generate electrical power quietly and efficiently, without pollution. Unlike power
  • that use fossil fuels, the by-products from an operating fuel cell are heat and water
  • ...5 more annotations...
  • With a fuel cell, chemicals constantly flow into the cell so it never goes dead -- as long as there is a flow of chemicals into the cell, the electricity flows out of the cell. Most fuel cells in use today use hydrogen and oxygen as the chemicals.
  • If you want to be technical about it, a fuel cell is an electrochemical energy conversion device. A fuel cell converts the chemicals hydrogen and oxygen into water, and in the process it produces electricity.
  • polymer electrolyte membrane fuel cells (PEMFC)
  • United States has dedicated more than one billion dollars to fuel cell research and development so far.So what exactly is a fuel cell,
  • With a fuel cell, chemicals constantly flow into the cell so it never goes dead -- as long as there is a flow of chemicals into the cell, the electricity flows out of the cell. Most fuel cells in use today use hydrogen and oxygen as the chemicals.
  • ricciardellinick on 08 Mar 13
     
    "In 2003, President Bush announced a program called the Hydrogen Fuel Initiative (HFI) during his State of the Union Address."
  • Connor Wiggins on 11 Mar 13
     
    It shows how its sustainable 
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Industry:Biofuels - 0 views

www.wikinvest.com/...Biofuels biofuels what
shared by bureaumar98 on 15 Mar 12 - No Cached
  • Biofuel, based on fuel derived from organic biomass from recently living animals or plants or their byproducts, has transformed from a niche alternative to fossil fuels (e.g., gasoline, diesel) to become a booming industr
  • The term “biofuels” encompasses a wide range of fuels, including vegetable oils, animal fats, ethanol, biodiesel (any oil or fat that undergoes transesterification to more closely resemble mineral-based fuel), and synfuel (fuel made from gasified organic matter, then liquefied to form fuel). The main common trait of all these fuels is that they are derived from organic biomass, rather than minerals.
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Fossil Fuel Alternatives for Cars | eHow.com - 0 views

www.ehow.com/il-fuel-alternatives-cars.html hydrogen cost sustainable
shared by stamperdyl98 on 15 Mar 12 - No Cached
  • Hydrogen Hydrogen can be produced domestically through electrolysis (the process of splitting the hydrogen and oxygen particles apart in a water molecule). When used in automobiles, a hydrogen-powered car will emit only water vapor from its tailpipe. Hydrogen vehicles use fuel cells as their source of power, and currently this technology is too expensive for most consumers. If the costs of fuel cell technology and hydrogen production can decrease, hydrogen may become one of the most environmentally friendly and sustainable sources of energy available.
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Environment « myFC - 0 views

www.myfuelcell.se/...environment hydrogen environmental
shared by stamperdyl98 on 15 Mar 12 - No Cached
  • Through the use of hydrogen together with fuel cell technology it is possible to achieve a radical decrease in local pollution of carbon dioxide, nitrogen oxides and particles from the transportation sector. Although the production of hydrogen from fossil fuels affects the environment it is an advantage that the carbon dioxide emissions can be separated already on the production site. This becomes evident when hydrogen is used as vehicle fuel, avoiding pollution from every individual vehicle.The only emission from a fuel cell reacting with hydrogen is pure water. The environmental gains are high, provided that pollution in the hydrogen production process is kept low. A fuel cell is approximately twice as energy efficient as a combustion engine if used in a regular car. The effect is that, using the same amount of energy, a fuel cell car can drive twice as far as a car with a combustion engine can.
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Today's Climate Change | A Student's Guide to Global Climate Change | US EPA - 2 views

www.epa.gov/...index.html co2
shared by sconzomic99 on 19 Mar 12 - No Cached
  • Burning fossil fuels releases carbon dioxide, a heat-trapping gas, into the atmosphere, which is the main reason why the climate is changing.
  • dpurdy on 19 Mar 12
     
    What is climate change
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Learn the Basics | A Student's Guide to Global Climate Change | US EPA - 0 views

www.epa.gov/...index.html climate change co2
shared by dpurdy on 19 Mar 12 - No Cached
  • The Earth is getting warmer because people are adding heat-trapping gases to the atmosphere, mainly by burning fossil fuels. These gases are called greenhouse gases. Warmer temperatures are causing other changes around the world, such as melting glaciers and stronger storms. These changes are happening because the Earth's air, water, and land are all linked to the climate
  • dpurdy on 19 Mar 12
     
    The basics of climate change.
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Huge challenges in scaling up biofuels infrastructure - 1 views

www.physorg.com/news201799021.html biofuel infrastructure potential
shared by dpurdy on 22 Mar 12 - No Cached
  • Major changes will be needed to grow, handle, transport and store the immense quantities of biomass -- mostly lignocellulosic feedstocks such as switchgrass, crop residues and forest wastes -- necessary to continually feed electric power generation stations and produce biofuels for transportation,
  • converting to a system in which biomass provides much of the country's energy will require new ways of thinking about agriculture, energy infrastructure and rural economic development.
  • It is estimated that bioenergy has the potential to provide up to 60 percent of the world's primary energy, and biomass seems poised to provide a major alternative to fossil fuels,"
  • ...2 more annotations...
  • "Thus, the combination of expected growth in energy demand and the lower density of biomass imply that by 2050, biomass transport volumes will be greater than the current capacity of the entire energy and agricultural commodity infrastructure,
  • "For example, a large biofuel plant would require 16 to 20 tanker trucks or railcars per day to move the fuel to market, increasing both traffic and costs."
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