Solar Power Homes Blog » efficiency http://www.solarpowerforhomereports.com/blog Generate Renewable Residential Solar and Wind Energy Sat, 19 Jun 2010 05:50:49 +0000 en hourly 1 http://wordpress.org/?v=3.0.4 What is your opinion on using a photovoltaic system to offset/eliminate the cost of buying grid power? http://www.solarpowerforhomereports.com/blog/what-is-your-opinion-on-using-a-photovoltaic-system-to-offseteliminate-the-cost-of-buying-grid-power/ http://www.solarpowerforhomereports.com/blog/what-is-your-opinion-on-using-a-photovoltaic-system-to-offseteliminate-the-cost-of-buying-grid-power/#comments Mon, 31 May 2010 11:48:40 +0000 Admin I’m taking a poll on the attitudes of consumers towards alternative energy, namely solar energy. A photovoltaic system converts sunlight into electricity. At current, the efficiency rating of most commercially available panels is somewhere between 15-19% depending on the type you buy. An efficiency rating is a measurement of how much of the available sunlight a pv panel is able to convert into electricity. (NASA uses panels with a 40% efficiency rating)


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]]> http://www.solarpowerforhomereports.com/blog/what-is-your-opinion-on-using-a-photovoltaic-system-to-offseteliminate-the-cost-of-buying-grid-power/feed/ 4 why does green light no give me a good power output for a solar panel compared to red and blue? http://www.solarpowerforhomereports.com/blog/why-does-green-light-no-give-me-a-good-power-output-for-a-solar-panel-compared-to-red-and-blue/ http://www.solarpowerforhomereports.com/blog/why-does-green-light-no-give-me-a-good-power-output-for-a-solar-panel-compared-to-red-and-blue/#comments Sat, 29 May 2010 11:51:35 +0000 Admin i carried out an experiment using different coloured solutions to see the affect of wavelength on power output from a silicon photovoltaic solar panel. I was expecting to see a peak where the efficiency of the wavelength and the energy of the photons were optimum. However instead i found that from wavelength in the blue region it was a fairly high power output which then decreased towards the green region and then increased even higher in the red region. I have made sure i kept the intensities of the different wavelengths constant. What could be the cause for this dip in the green wavelength region?


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]]> http://www.solarpowerforhomereports.com/blog/why-does-green-light-no-give-me-a-good-power-output-for-a-solar-panel-compared-to-red-and-blue/feed/ 1 If a typical home uses 385kWh of electricity per month, how many square meters of solar cells would be require? http://www.solarpowerforhomereports.com/blog/if-a-typical-home-uses-385kwh-of-electricity-per-month-how-many-square-meters-of-solar-cells-would-be-require/ http://www.solarpowerforhomereports.com/blog/if-a-typical-home-uses-385kwh-of-electricity-per-month-how-many-square-meters-of-solar-cells-would-be-require/#comments Thu, 27 May 2010 11:49:03 +0000 Admin In a sunny location, sunlight has a power density of about 1kW/m^2 . Photovoltaic solar cells can convert this power into electricity with 16% efficiency.


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]]> http://www.solarpowerforhomereports.com/blog/if-a-typical-home-uses-385kwh-of-electricity-per-month-how-many-square-meters-of-solar-cells-would-be-require/feed/ 2 If a typical home uses 390 kWh of electricity per month, how many square meters of solar cells would be requir? http://www.solarpowerforhomereports.com/blog/if-a-typical-home-uses-390-kwh-of-electricity-per-month-how-many-square-meters-of-solar-cells-would-be-requir/ http://www.solarpowerforhomereports.com/blog/if-a-typical-home-uses-390-kwh-of-electricity-per-month-how-many-square-meters-of-solar-cells-would-be-requir/#comments Tue, 25 May 2010 11:48:58 +0000 Admin In a sunny location, sunlight has a power density of about 1 kW/m2. Photovoltaic solar cells can convert this power into electricity with 15% efficiency.
If a typical home uses 390 kWh of electricity per month, how many square meters of solar cells would be required to meet its energy requirements? Assume that electricity can be generated from the sunlight for 8 hours per day.


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]]> http://www.solarpowerforhomereports.com/blog/if-a-typical-home-uses-390-kwh-of-electricity-per-month-how-many-square-meters-of-solar-cells-would-be-requir/feed/ 3 how many square meters of solar cells would be required to meet its energy requirements? http://www.solarpowerforhomereports.com/blog/how-many-square-meters-of-solar-cells-would-be-required-to-meet-its-energy-requirements/ http://www.solarpowerforhomereports.com/blog/how-many-square-meters-of-solar-cells-would-be-required-to-meet-its-energy-requirements/#comments Sun, 23 May 2010 11:55:16 +0000 Admin In a sunny location, sunlight has a power density of about 1 kW/m2 . Photovoltaic solar cells can convert this power into electricity with 16% efficiency.
If a typical home uses 385 kW/m2 of electricity per month, how many square meters of solar cells would be required to meet its energy requirements? Assume that electricity can be generated from the sunlight for 8 hours per day.


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]]> http://www.solarpowerforhomereports.com/blog/how-many-square-meters-of-solar-cells-would-be-required-to-meet-its-energy-requirements/feed/ 1 What's the most efficient way to make electricity from solar power on a large scale? http://www.solarpowerforhomereports.com/blog/whats-the-most-efficient-way-to-make-electricity-from-solar-power-on-a-large-scale/ http://www.solarpowerforhomereports.com/blog/whats-the-most-efficient-way-to-make-electricity-from-solar-power-on-a-large-scale/#comments Sun, 25 Apr 2010 21:51:54 +0000 Admin What’s the most efficient way to make electricity from solar power on a large scale? Is it using photovoltaic cells, or mirros and a turbine or what? I’d be interested in a web site that compares all the options by efficiency, cost, reliability in cloudy weather, and stuff like that.


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]]> http://www.solarpowerforhomereports.com/blog/whats-the-most-efficient-way-to-make-electricity-from-solar-power-on-a-large-scale/feed/ 4 renewable energy? http://www.solarpowerforhomereports.com/blog/renewable-energy-2/ http://www.solarpowerforhomereports.com/blog/renewable-energy-2/#comments Sun, 25 Apr 2010 04:31:16 +0000 Admin ok, so I’m preparing a speech on renewable energy. Primarily solar energy. . . . can anyone give me some facts and figures to incorporate, perhaps some angles I havn’t thought of yet? I plan on appealing to the emotional side of saving the environment and the logical side of saving money on your monthly energy bill (it’s to be a persuasive speech) . . . so perhaps the efficiency rating of solar panels, or that average energy produced by wind? or even better if someone has some figures on the california rebates given for solar panel installation. Thanks for the assistance :-D


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]]> http://www.solarpowerforhomereports.com/blog/renewable-energy-2/feed/ 3 In a sunny location, sunlight has a power density of about 1 kW/m^2. Photovoltaic solar cells can convert this? http://www.solarpowerforhomereports.com/blog/in-a-sunny-location-sunlight-has-a-power-density-of-about-1-kwm2-photovoltaic-solar-cells-can-convert-this/ http://www.solarpowerforhomereports.com/blog/in-a-sunny-location-sunlight-has-a-power-density-of-about-1-kwm2-photovoltaic-solar-cells-can-convert-this/#comments Fri, 09 Apr 2010 17:37:47 +0000 Admin In a sunny location, sunlight has a power density of about 1 kW/m^2. Photovoltaic solar cells can convert this power into electricity with 14% efficiency. If a typical home uses 380 kWh of electricity per month, how many square meters of solar cells would be required to meet its energy requirements? Assume that electricity can be generated from the sunlight for 8 hours per day.


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]]> http://www.solarpowerforhomereports.com/blog/in-a-sunny-location-sunlight-has-a-power-density-of-about-1-kwm2-photovoltaic-solar-cells-can-convert-this/feed/ 1