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kennedyeri98

How Much Does Solar Energy Cost? | Solar Energy Facts - 1 views

solarenergyfactsblog.com/solar-energy-cost

cost solar

shared by kennedyeri98 on 12 Mar 13 - No Cached
  • Which State do you live in?
  • Federal solar tax rebate
  • most of the cost of your system has to do with where you live.
  • ...11 more annotations...
  • These can be tax write-offs or money back in your pocket.
  • Many states, like New Jersey and Massachusetts, have developed credit markets. You get credits for producing solar and you can sell them for money.
  • if you can cut your power bill before you go solar, everything will cost less. Consider a home energy audit before upgrading to solar energy.
  • Local utilities and municipalities (LA is a great example) have their own solar energy subsidies
  • How much Solar Energy do you Want to Produce?
  • Sometimes just knocking off a part of the bill can give you huge monthly electricity cost savings, as in the case of tiered electricity rates
  • In some areas your utility will pay you for an extra electricity you send back to the grid.
  • importance of energy efficiency
  • If you buy the system you’ll see big up-front costs
  • so you might not get to claim all the credits and rebates available.
  • Generally this option trades long-term financial gain for low (or no) up-front cost.
  • kennedyeri98 on 12 Mar 13
     
    How much the cost is and the importance of the place you are changing the cost and refund/credits you will ether gain or lose
warneraus98

Marine energy - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Ocean_energy

tide convert

shared by warneraus98 on 12 Mar 13 - No Cached
  • Theoretical global ocean energy resource[2] Capacity (GW) Annual gen. (TW·h) Form 5,000 50,000 Marine current power[3] 20 2,000 Osmotic power 1,000 10,000 Ocean thermal energy 90 800 Tidal energy 1,000—9,000 8,000—80,000 Wave energy
butlerlex99

Solar Energy Facts: Solar Energy, Solar Cells, Solar Panels | Resourses - 0 views

solarschoolpa.com/solar-energy-facts.html

solar solar power facts

shared by butlerlex99 on 12 Mar 13 - No Cached
  • For billions of years, the sun has poured out huge amounts of energy in several forms, including light, heat, radio waves, and even x-ray. The Earth, in orbit around the sun, intercepts a very small part of the sun’s immense output. On Earth, direct sunlight is available from sunrise until sunset, except during solar eclipses. Solar collectors and modules are designed to capture some of the sun’s energy and change it from radiation into more usable forms such as heat or electricity. In fact, sunlight is an excellent source of heat and electricity, the two most important forms of energy we consume.
  • butlerlex99 on 12 Mar 13
     
    solar energy facts
dylan purner

Energy Basics: Photovoltaics - 1 views

www.eere.energy.gov/...photovoltaics.html

solar history

shared by dylan purner on 08 Mar 13 - No Cached
  • First used in about 1890, "photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, relating to electricity pioneer Alessandro Volta. And this is what photovoltaic materials and devices do—they convert light energy into electrical energy, as French physicist Edmond Becquerel discovered as early as 1839.
  • kenyonlau99 on 08 Mar 13
     
    "First used in about 1890, "photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, relating to electricity pioneer Alessandro Volta. And this is what photovoltaic materials and devices do-they convert light energy into electrical energy, as French physicist Edmond Becquerel discovered as early as 1839. Becquerel discovered the process of using sunlight to produce an electric current in a solid material. But it took more than another century to truly understand this process. Scientists eventually learned that the photoelectric or photovoltaic effect caused certain materials to convert light energy into electrical energy at the atomic level. PV systems are already an important part of our daily lives. Simple PV systems provide power for small consumer items such as calculators and wristwatches. More complicated systems provide power for communications satellites, water pumps, and the lights, appliances, and machines in some homes and workplaces. Many road and traffic signs also are now powered by PV. In many cases, PV power is the least expensive form of electricity for these tasks."
kenyonlau99

Where Does Solar Energy Come From - PV Gap - 0 views

www.pvgap.org/...es-solar-energy-come-from.html

solar form

shared by kenyonlau99 on 08 Mar 13 - No Cached
  • Solar energy is energy from the sun, it is a renewable source of energy and does not cause pollution.
  • kenyonlau99 on 08 Mar 13
     
    where does solar/photovoltaic energy come from? answer above!
whalenkil98

Where does solar energy come from - 1 views

www.haqsolar.com/haqsolar15189.htm

form energy solar

shared by whalenkil98 on 08 Mar 13 - No Cached
  • Solar energy originates in the depths of our sun. The sun endures a continuous stream of thermonuclear explosions as hydrogen atoms are fused into helium atoms. We encounter the resultant energy as radiation that strikes the surface of the earth.
    • kenyonlau99
      kenyonlau99 on 11 Mar 13
       
      so once the rays of the sun hit the solar panel it then is turned into energy .Fully powered by the sun.
  • hayespay99 on 08 Mar 13
     
    "Solar energy originates in the depths of our sun."
  • whalenkil98 on 11 Mar 13
     
    Where solar energy is formed and how it is formed.
  • kenyonlau99 on 11 Mar 13
     
    .Fully powered by the sun.
leonardsar99

What Is Solar Energy - 0 views

www.universetoday.com/...what-is-solar-energy

solar form

shared by leonardsar99 on 11 Mar 13 - No Cached
  • Solar energy is the radiant energy produced by the Sun. It is both light and heat
  • What is solar energy? Solar energy is the radiant energy produced by the Sun. It is both light and heat. It, along with secondary solar-powered resources such as wind and wave power, account for the majority of the renewable energy on Earth.
wellsann99

STELR :: wind ENERGY - 1 views

stelr.org.au/wind-energy

wind convert

shared by wellsann99 on 11 Mar 13 - No Cached
  • STEP 1: Moving air pushes against the blades of the turbine, which are tilted to the direction of the wind. This makes the blades spin. In the process, some of the kinetic energy of the moving air is transformed into the mechanical energy of the spinning blades. (The wind still has some kinetic energy as it flows away from the turbine.) STEP 2: The shafts and the gears inside the gear box transfer the mechanical energy of the turbine to the generator. (The gears make the drive shaft to the generator spin faster than the shaft connected to the blade hub.) STEP 3: The generator transforms mechanical energy into electrical energy.
  • wellsann99 on 11 Mar 13
     
    steps to converting win power to electricty
sconzomic99

Tidal Energy for Kids - 0 views

renewableenergyindex.com/...tidal-energy-kids

sustainable pollution energy tide cost

shared by sconzomic99 on 11 Mar 13 - No Cached
  • As far as producing electricity goes, tidal energy is one of the cheapest kinds.
  • Since the tidal cycle repeats itself every 24 hours, there is a guarantee that power can be produced this way every day of the year.
  • can help protect delicate coastal areas from storm damage, as well
  • ...4 more annotations...
  • can protect against erosion
  • Even though tidal energy does not produce any kind of pollution, the barrages completely change the coastline. Many animals and birds make their homes on the mudflats around tidal basins. When the tidal energy plants flood these areas, the habitats of these animals are destroyed. Holding the water back also causes silt to build up inside the tidal basin and can cause the released water to take longer to clear from dirt and materials. This can keep the water around the coastline from settling and becoming clear as quickly as it usually does. There is also evidence that using tidal power plants can change the migration patterns of many ocean creatures.
  • Other people think that since tidal energy plants can only produce electricity for about ten hours every day,
  • it is not worth the danger to plants, animals, and ecosystems.
vanierfel98

How Green is Geothermal Energy?: Clean Energy, Renewable Energy, Sustainable Energy: Gr... - 1 views

www.greatgreenidea.com/reen-is-Geothermal-Energy.html

geothermal sustainable

shared by vanierfel98 on 11 Mar 13 - No Cached
  • It is an energy source that is considered renewable because both rain and heat in the earth replenish themselves naturally.
  • vanierfel98 on 11 Mar 13
     
    Geothermal energy is renewable
butlerlei98

tidal energy - National Geographic Education - 0 views

education.nationalgeographic.com/...tidal-energy

current tide

shared by butlerlei98 on 11 Mar 13 - No Cached
  • Tidal energy is produced by the surge of ocean waters during the rise and fall of tides.
  • During the 20th century, engineers developed ways to use tidal movement to generate electricity in areas where there is a significant tidal range—the difference in area between high tide and low tide. All methods use special generators to convert tidal energy into electricity.
  • For most tidal energy generators, turbines are placed in tidal streams. A tidal stream is a fast-flowing body of water created by tides. A turbine is a machine that takes energy from a flow of fluid.
  • ...1 more annotation...
  • The world's first tidal power station was constructed in 2007 at Strangford Lough in Northern Ireland. The turbines are placed in a narrow strait between the Strangford Lough inlet and the Irish Sea. The tide can move at 4 meters (13 feet) per second across the strait.
  • butlerlei98 on 11 Mar 13
     
    ". The United States has no tidal plants and only a few sites where tidal energy could be produced at a reasonable price."
kilburnzac00

How Much Solar Energy is Used in the World? | Solar Energy Facts - 1 views

solarenergyfactsblog.com/ar-energy-is-used-in-the-world

much energy world US How solar power

shared by kilburnzac00 on 11 Mar 13 - No Cached
  • How much solar energy is used in the world? Global capacity for solar energy production reached 39.8 GigaWatts (0.0398 terawatts) in 2010 . Here are the top 10 solar energy producing countries in the world:
  • United States (1,650 MW
  • whalenkil98 on 11 Mar 13
     
    how much solar energy is used in the US
dpurdy

Tidal Power - Costs - Pros & Cons - How it Works - Green Energy - 0 views

clean-future.com/...tidal-power

tide form convert

shared by dpurdy on 06 Apr 13 - No Cached
  • Tidal power is a predictable source of energy unlike that of wind power and solar power because the tides follow the gravitational pull of the moon. The general production of tidal energy is similar to other forms of hydroelectric power where the force of water flow spins a turbine which generates energy.
  • he tidal stream generator uses the kinetic energy of the flowing tide to spin windmill like turbines. It is also often referred to as a tidal energy converter (TEC).
  • Tidal power is the production of electricity by the utilization of tidal energy.
brownale99

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.""
dpurdy

Tidal Energy Pros and Cons - Energy Informative - 0 views

energyinformative.org/tidal-energy-pros-and-cons

tidal advantages disadvantages cost

shared by dpurdy on 22 Oct 12 - No Cached
  • This ultimately reduces the cost these power plants can sell their electricity
  • It is important to realize that the methods for generating electricity from tidal energy is a relatively are relatively new technologies
  • Tidal Energy is a renewable energy source. This energy source is a result of the gravitational fields from both the sun and the moon, combined with the earth’s rotation around its axis, resulting in high and low tides.
  • ...1 more annotation...
  • In addition to being a renewable energy, it does not emit any climate gases and does not take up a lot of space
  • buherjac99 on 22 Oct 12
     
    pollution
logansar99

EERE News: DOE Reports Show Major Potential for Wave and Tidal Energy Production Near U... - 0 views

apps1.eere.energy.gov/...pa_id=664

wave potential

shared by logansar99 on 24 Oct 12 - No Cached
  • The United States uses about 4,000 terawatt hours (TWh) of electricity per year. DOE estimates that the maximum theoretical electric generation that could be produced from waves and tidal currents is approximately 1,420 TWh per year, approximately one-third of the nation's total annual electricity usage.
  • calculate the maximum kinetic energy available from waves and tides off U.S. coasts that could be used for future energy production, and which represent largely untapped opportunities for renewable energy development in the United States.
  • The West Coast, including Alaska and Hawaii, has especially high potential for wave energy development, while significant opportunities for wave energy also exist along the East Coast. Additionally, parts of both the West and East Coasts have strong tides that could be tapped to produce energy.
smithcol98

Discover the true FACTS about Solar Energy | INTERESTING Solar Energy FACTS - 0 views

www.facts-about-solar-energy.com/facts-about-solar-energy.html

shared by smithcol98 on 15 Mar 12 - Cached
  • Solar Energy is better for the environment than traditional forms of energy.
  • Solar energy can also be used to heat swimming pools, power cars, for attic fans, calculators and other small appliances. It produces lighting for indoors or outdoors.
  • Accounting for only 5 percent of the world's population, Americans consume 26 percent of the world's energy.
stockmanchl99

Biofuel Facts, Biofuel Information - National Geographic - 0 views

environment.nationalgeographic.com/...biofuel-profile

shared by stockmanchl99 on 13 Mar 12 - Cached
  • Biofuels have been around as long as cars have. At the start of the 20th century, Henry Ford planned to fuel his Model Ts with ethanol, and early diesel engines were shown to run on peanut oil.
  • stockmanchl99 on 08 Mar 13
     
    "On the face of it, biofuels look like a great solution. Cars are a major source of atmospheric carbon dioxide, the main greenhouse gas that causes global warming. But since plants absorb carbon dioxide as they grow, crops grown for biofuels should suck up about as much carbon dioxide as comes out of the tailpipes of cars that burn these fuels. And unlike underground oil reserves, biofuels are a renewable resource since we can always grow more crops to turn into fuel. Unfortunately, it's not so simple. The process of growing the crops, making fertilizers and pesticides, and processing the plants into fuel consumes a lot of energy. It's so much energy that there is debate about whether ethanol from corn actually provides more energy than is required to grow and process it. Also, because much of the energy used in production comes from coal and natural gas, biofuels don't replace as much oil as they use. For the future, many think a better way of making biofuels will be from grasses and saplings, which contain more cellulose. Cellulose is the tough material that makes up plants' cell walls, and most of the weight of a plant is cellulose. If cellulose can be turned into biofuel, it could be more efficient than current biofuels, and emit less carbon dioxide. "
conboyeri98

Fuel cell - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Fuel_cell

fuelcell fuel cell

shared by conboyeri98 on 21 Mar 12 - Cached
  • A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.[1] Hydrogen is the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are sometimes used. Fuel cells are different from batteries in that they require a constant source of fuel and oxygen to run, but they can produce electricity continually for as long as these inputs are supplied
  • A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.
  • A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.[1] Hydrogen is the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are sometimes used. Fuel cells are different from batteries in that they require a constant source of fuel and oxygen to run, but they can produce electricity continually for as long as these inputs are supplied.
  • ...8 more annotations...
  • A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent
  • There are many types of fuel cells, but they all consist of an anode (negative side), a cathode (positive side) and an electrolyte that allows charges to move between the two sides of the fuel cell.
  • The principle of the fuel cell was discovered by German scientist Christian Friedrich Schönbein in 1838
  • Stationary fuel cells are used for commercial, industrial and residential primary and backup power generation. Fuel cells are very useful as power sources in remote locations, such as spacecraft, remote weather stations, large parks, communications centers, rural locations including research stations, and in certain military applications. A fuel cell system running on hydrogen can be compact and lightweight, and have no major moving parts. Because fuel cells have no moving parts and do not involve combustion, in ideal conditions they can achieve up to 99.9999% reliability.[49] This equates to less than one minute of downtime in a six-year period.
  • Although there are currently no Fuel cell vehicles available for commercial sale, over 20 FCEVs prototypes and demonstration cars have been released since 2009. Demonstration models include the Honda FCX Clarity, Toyota FCHV-adv, and Mercedes-Benz F-Cell.[64] As of June 2011 demonstration FCEVs had driven more than 4,800,000 km (3,000,000 mi), with more than 27,000 refuelings.[65]
  • A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.[1] Hydrogen is the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are sometimes used.
  • The fuel cell he made used similar materials to today's phosphoric-acid fuel cell.
  • In 2003, U.S. President George W. Bush proposed the Hydrogen Fuel Initiative (HFI). This aimed at further developing hydrogen fuel cells and infrastructure technologies with the goal of producing commercial fuel cell vehicles. By 2008, the U.S. had contributed 1 billion dollars to this project
  • collignonaut99 on 08 Mar 13
     
    "A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.[1] Hydrogen is the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are sometimes used. Fuel cells are different from batteries in that they require a constant source of fuel and oxygen to run, but they can produce electricity continually for as long as these inputs are supplied."
  • ...1 more comment...
  • conboyeri98 on 11 Mar 13
     
    Explains what a fuel cell is.
  • olearydev99 on 11 Mar 13
     
    "Individual fuel cells produce relatively small electrical potentials, about 0.7 volts, so cells are "stacked", or placed in series, to increase the voltage and meet an application's requirements.[2] In addition to electricity, fuel cells produce water, heat and, depending on the fuel source, very small amounts of nitrogen dioxide and other emissions. The energy efficiency of a fuel cell is generally between 40-60%, or up to 85% efficient if waste heat is captured for use."
  • ricciardellinick on 11 Mar 13
     
    "A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.[1] Hydrogen is the most common fuel, but hydrocarbons such as natural gas and alcohols like methanol are sometimes used."
smithree98

EIA Energy Kids - Hydrogen - 2 views

www.eia.gov/...energy.cfm

hydrogen fuel benifits

shared by smithree98 on 03 Nov 11 - No Cached
  • Like electricity, hydrogen is a secondary source of energy. It stores and carries energy produced from other resources (fossil fuels, water, and biomass).
  • ydrogen is the simplest element. Each atom of hydrogen has only one proton. It is also the most plentiful gas in the universe. Stars like the sun are made primarily of hydrogen. The sun is basically a giant ball of hydrogen and helium gases. In the sun's core, hydrogen atoms combine to form helium atoms. This process — called fusion — gives off radiant energy.
  • Hydrogen gas is so much lighter than air that it rises fast and is quickly ejected from the atmosphere. This is why hydrogen as a gas (H2) is not found by itself on Earth. It is found only in compound form with other elements. Hydrogen combined with oxygen, is water (H2O). Hydrogen combined with carbon forms different compounds, including methane (CH4), coal, and petroleum.
  • ...6 more annotations...
  • Hydrogen has the highest energy content of any common fuel by weight
  • Like electricity, hydrogen is an energy carrier and must be produced from another substance. Hydrogen is not currently widely used, but it has potential as an energy carrier in the future. Hydrogen can be produced from a variety of resources (water, fossil fuels, or biomass) and is a byproduct of other chemical processes.
  • Steam reforming is currently the least expensive method of producing hydrogen and accounts for about 95% of the hydrogen produced in the United States. This method is used in industries to separate hydrogen atoms from carbon atoms in methane (CH4). But the steam reforming process results in greenhouse gas emissions that are linked with global warming.1
  • Electrolysis Creates No Emissions but Is Costly Electrolysis is a process that splits hydrogen from water. It results in no emissions, but it is currently an expensive process. New technologies are currently being developed.
  • Hydrogen fuel cells make electricity. They are very efficient, but expensive to build. Small fuel cells can power electric cars. Large fuel cells can provide electricity in remote places with no power lines.
  • Portable fuel cells are being sold to provide longer power for laptop computers, cell phones, and military applications.
  • smithree98 on 23 Oct 12
     
    tells all about hydrogen
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