The Solar Power Electricity Blog |

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What do you do on a regular day to day basis at work? It doesn’t matter how long your answer is, I just need one ASAP. Thanks!

I work at the altE Store. We’re a web based store that sells alternative energy products to homeowners and installers. I take calls from people all over the world looking for information about using solar or wind power for their homes. I put together custom system designs for them, and help them with technical questions.

I am doing a report about solar power and I need to know what determines the amount of electricity produced?

example: exposure to sun, angle of panel, quality

please tell me as much as you can
much appreciated

irradiance in watts/meter^2 (1000-800w/m^2 depending on air quality)
COS of angle to the suns rays
efficiency of the panels (usually about 15%)
age of the panels(one dead cell can drop an entire panel from the array)
how dirty are the panels (dust, bird poop, leaves, shading)
efficiency of the inverter (usually about 90%)

All of these factors affect the amount of electricity produced. One other consideration is that in areas of extreme hot and cold the band gap of the silicon is changed. Thus in very low temperatures(-20F) the voltage gets higher and the current gets lower. In high temps(110F), the voltage goes lower and the current gets higher.

If you would like more information on solar electric systems visit:
http://www.aurorapower.net/alternative-energy/solar-electric.aspx

Hope that helps!

Deserts are ‘waste land’ not good for much, but they do have a lot of energy coming down from the sun. They are usually too far away from cities to make transmission of the power worthwhile, but, if they were used to make a useful transportable energy source (hydrogen?) on the spot, it seems to me large amounts of pollution free transportable energy could be generated from the sun, using ‘worthless’ land. Transportation of the end product is another question, but in some parts of the world, deserts are close to oceans meaning the product could be shipped.

The point is that transmitting power by power lines has a limited range due to the loss over distance. If it were possible to use the solar power to make a transportable product that could be converted back to energy day or night, that would be a large step forward.

this is not a new idea

http://www.csptoday.com/reports/trec_white_paper.pdf

help me

Solar power (photovoltaic or "PV") cells are silicon wafers that are ‘doped’ so that when sunlight hits them, electrons are knocked loose to create electrical current. They usually provide very little voltage (1.5 to 2.5 volts), but are connected in series to step the voltage up to 24V.

The array of cells is usually connected to an inverter, which changes the 24V direct current (DC) into 120V alternating current (AC) that we are used to in the homes.

The home is then either also tied to the grid in a "grid tie" system, so that power is available at night or when it’s cloudy. Off-grid systems uses charging systems and batteries to store the power for use at night or during cloudy periods. However, adding batteries and chargers vastly increases the cost of the system (most due to maintaining and replacing the batteries).

I know it can be done, but how does it actually happen? Is there a diode or something that only allows current to flow into the grid. Does the system have to be at higher voltage than the grid?

Yes. It is that simple. (not the diode, the higher voltage)The solar panels need to generate a voltage higher than the voltage on the power grid. We assume the voltage coming from the solar panels is adjustable. Better yet it should be adjusted automatically, because the current going up into the grid will rise rapidly as you increase the voltage only a little.

i want all the power requirement of flat or one single house to be fulfilled by solar power. i want the address and the cost from where i can get it

look at alpha boilers website i went on a course there to fit solar panel central heating and hot water cylinders quite expensive though

Solar energy?
The sun (in nuclear fusion) produce energy in the form of electromagnetic radiation. It can be used/transformed into potential-chemical energy by being stored in glucose molecules (done by chloroplasts in plants) which actually (in principle) work similarly to solar pannels. If an electromagnetic wave hit an electron (and it has enough energy) it will excite the electron, and may cause it to be knocked of. Solar pannels are semi-conductors, the electrons in them get excited creating a flow of electrons.

I have made a project on solar electricity power generation and expected to say something about it ..I need your help for the following informations.
(1) How the whole process work?.(asking about the solar energy receptor)
(2) How the sun rays are converted in to electrical charges?
(3)What are the good and bad effects of solar power generation?
and so on..

I have search a number of site to know about this but didn’t get satisfying answers.I have only two days in my hand to speak about this so please give some information,no links please.As loking for the above information in thos links may take time and donot have much time.
In other word i am asking you people to write a lecture/essay for me on Solar electricity/power generation.
Hope you people would answer me satisfactorily.

Solar electricity generation may be made in a number of ways.

The question in too ample to be answered in a few lines.

Your position is funny. You do no want to study and you want that we study in your place ????

This is a bit crazy:::::unless you are joking ….

well, surely this makes a bit of economic as well as environmental sense – it would show the developing world amongst others that we’re serious about helping these nations to develop their environmental resources to aid their wellbeing, as well as aiding our own need for energy resources

Because of cost, shipping, the size of batteries you would need, the constent replacing etc.

And where do the dead batteries go – the cost more money to recycle….

We are better to invest in natural power research in our own country like water and wind power and then help them develop thier own.