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Contents contributed and discussions participated by kennedyeri98

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Inverter Noise Emissions from a solar PV application - 2 views

www.civicsolar.com/...Inverter-Noise-Emissions solar convert noise
shared by kennedyeri98 on 14 Mar 13 - No Cached
  • Electrical interference is a problem that might be encountered with solar power system electronics
  • produces at least some noise and nearly all equipment now used in PV systems is digital.
  • digital electronic
  • ...2 more annotations...
  • charge controllers and many inverters (particularly modified sine wave inverters)
  • high power digital pulses are one of the worst interference sources.
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Climate Change: Evidence - 0 views

climate.nasa.gov/evidence Climate climate change solar
shared by kennedyeri98 on 13 Mar 13 - No Cached
  • evidence that atmospheric CO2 has increased since the Industrial Revolution.
  • been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago
  • proceeding at a rate that is unprecedented in the past 1,300 years.1
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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
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STEP - Heating houses by sunlight-How sustainable is solar power generally? - 0 views

www.stepin.org/casestudy.php solar sustainable
shared by kennedyeri98 on 11 Mar 13 - No Cached
  • Solar energy does little to harm the environment.
  • Even when the sun does not shine because of cloud or dust, its diffuse rays can still be used to produce electricity or heat.
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Solar Power Energy Information, Solar Power Energy Facts - National Geographic - 0 views

environment.nationalgeographic.com/...solar-power-profile solar co2
shared by sokolkyl00 on 29 Oct 12 - No Cached
  • Every hour the sun beams onto Earth more than enough energy to satisfy global energy needs for an entire year. Solar energy is the technology used to harness the sun's energy and make it useable. Today, the technology produces less than one tenth of one percent of global energy demand.
  • In one technique, long troughs of U-shaped mirrors focus sunlight on a pipe of oil that runs through the middle. The hot oil then boils water for electricity generation. Another technique uses moveable mirrors to focus the sun's rays on a collector tower, where a receiver sits. Molten salt flowing through the receiver is heated to run a generator.
  • Despite the drawbacks, solar energy use has surged at about 20 percent a year over the past 15 years, thanks to rapidly falling prices and gains in efficiency. Japan, Germany, and the United States are major markets for solar cells. With tax incentives, solar electricity can often pay for itself in five to ten years.
  • kennedyeri98 on 11 Mar 13
     
    Intriguing facts about the suns energy on how they use it on oil and the drawback 
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