Renewable Energy From Solar Grids and Wind Generators

When you think of energy sources, you think of natural gas, oil and coal. Though they have been providing energy to us for a number of years, they may not be available for ever as supplies is limited. It is estimated that at present the energy sources are available just for another 7 decades to meet our energy demands. Renewable energy is considered to be the best alternative solution for this problem.

The most commonly used renewable energy sources include energy from solar grids and wind generators. They are known as clean energy sources and as non pollutants. Neither greenhouse effect nor global warming is caused by such natural sources of energy. The cost of operating your own renewable energy is low, as they require very little maintenance.

In solar grid energy, energy is derived and utilized from the sun. The solar energy systems can be installed on your home, shed or garage without using additional land. With the a wind generators it can be easily build and installed on a pole and away from your home to get the best wind power.

Due to heavy dependence on electricity and gas, there is a constant price rise in the recent past, with oil prices soaring higher than ever in the past. The price rise on energy also directly affects the price of consumables. Use of renewable energy is the only way to control price rise. Renewable energy sources are the only best and viable alternative to the problem, which has to be vigorously pursued all over the world, with more seriousness than ever before.

Isn’t it time you got started on your own installation project? Just think, no more electricity bills, just Mother Natures Clean Renewable Energy. Click Here to learn more about Solar Power Grids and how they can help you.

Obediah Marsh
http://solarwindpower.info

Solar Powered Fans – A Buyer’s Guide

Solar Powered Fans are the ultimate solar product. They work best when they’re needed the most. As the sun starts to sizzle, these devices kick into action and provide a nice cooling breeze–for free!

Another great thing about solar powered fans is that you can install them anywhere. You don’t have to worry about electrical outlets and power cords. It’s just the fan, man.

There are many different kinds of solar powered fans you can buy. Here are some of the most popular:

Solar Powered Attic Fans Your attic needs ventilation to reduce the tremendous amount of heat that builds up as the sun beats down on the roof. Heat creates moisture, and moisture turns into rust, rot, bacteria, and mold. These are not things you want in your house.

Besides creating a health hazard, the heat in your attic travels down through your house, warming every room. Have you ever noticed that during an unusually cool summer day your house is still brutally hot? That’s because the stifling air in your attic has nowhere to go but down.

Solar powered attic fans cool your entire house by creating a draft that draws all the hot indoor air up into the attic and out the fan. Meanwhile, cool outside air is sucked into the house through the windows. The result is a cool, healthy attic–and house!

Solar Powered Gable Fans Like attic fans, gable fans ventilate and cool your attic. But whereas attic fans lie on the roof itself, gable fans are installed in the gables, naturally. Although smaller that attic fans, gable fans can be powerful. One 10 watt solar powered gable fan can ventilate 1,200 square feet. These fans are also perfect for garages, barns, lofts, workshops, or storage sheds–anyplace where moisture might cause mold and mildew.

Solar Powered Vents Vents are smaller than gable fans. They’re perfect for smaller spaces where moisture accumulates, like on your boat. I know someone who even installed a solar powered vent on his doghouse. Now that’s a lucky dog! You could also put one on your camper, RV, or van. These small solar powered fans will keep everything cool and clean–at no cost!

Solar power is here to stay. One of the world’s leading futurists, Ray Kurzweil, told The New York Times that solar power would be as important a source of energy as fossil fuels in about 5 years. And he firmly believes that in a couple of decades, all our energy will be derived from clean sources.

But you don’t have to wait. There are many solar products than can help you save money–and the environment–right now. And there’s no better place to start than with solar powered fans.

Jim Henderson often writes about alternative energy sources. To find out more about solar powered fans and where you can buy them, please visit Solar Powered Fans

Solar Energy Today

We have definitely only scratched the surface of solar energy and with each year our technology gets smaller and faster and so do our efforts at using solar energy.

What better fuel alternative than that great big ball of fire is the sky that won’t be depleted any time soon. This means that none of the hard labor is required that is necessary in the acquisition of fossil fuels. The sunlight is readily available for at least 12 hours a day, which is enough time to acquire the necessary energy to run a household.

Soar energy is also the most clean energy available. You do not use nonrenewable sources from the earth like fossil fuels or H2O (although we have a lot of it). No pollutants are put into the air. Solar energy is free, clean, and plentiful. Just reach out and grab some.
With the onset of nanotechnology solar power is about to become the cheapest fuel ever. The cost per watt has been estimated to be less than a dollar. Currently the cost per watt averages around $4.00. Hey wait, isn’t that what gas is at?

The maintenance for a solar power system to run your house should be minimal. Most of the panels I have seen have around 10 year warranties, some more, some less. Just like with everything you have wear and tear. But heck, most people don’t even keep there cars for ten years nowadays and I know there is no such thing as a ten year warranty on a car. Point is with the old solar panels you would make a return on investments on average of five to ten years. With the new cheaper and more efficient systems you would see it in two to five years.

The solar industry is about to have a huge boom. If you have ever thought about getting a solar system for your house the time is almost ripe for cheap energy and a way to get you off the grid.

Well I shouldn’t say totally off the grid since that would require a battery storage which is major mula. It will still be necessary to get some of your power from the electric company. However, you can check with your electric company to see what your choices are when you push some of your own energy back on the line. When you have a surplus during the day it will be put on the electric company’s line. Yes just imagine the that little wheel spinning in reverse for the first time. For this they will either give you a credit or a check depending on how much you generate and their policy.

Solar Cell Electricity – How It Works

We have all seen solar cell electricity generators by now, blue or black panels dotted around, silently generating pollution free electricity. But how do they do it?

The key to understanding how they do it lies in the chemistry of the elements used. Each panel is an array of individual cells. Each cell generates a small voltage and together they produce a useable current.

Each cell uses what is called a p-n junction to convert sunlight to electricity. This does not mean much to most of us so a clear explanation is required.

Silicon is the main component of each cell. Silicon is special because it is what is called a semiconductor. This means that under certain conditions it will conduct electricity whereas at other times it will not. For our purposes, we will assume it is conducting, ie allowing electrons to move through it.

The silicon in solar cells is doped which means has specific impurities added. Silicon is either doped with another element that has a shortage of electrons (called p-doped for positive or has an excess electrons (called n-doped for negative).

A solar cell consists of a wedge of p-silicon and a wedge of n-silicon. In between these wedges is a one-way gateway, a barrier that allows electrons to go from the n- to the p- wedge, but not back the other way.

That creates what is called a p-n junction.

Now we have a flow of electrons that move naturally from the n- silicon to the p-silicon. This is natural; it’s just the charges balanging out. But…

HOW DOES THIS GENERATE ELECTRICITY?

The p-silicon layer of the solar cell does not have a strong grip on the electrons that move into it from the n-silicon layer. When sunlight falls on the p-layer, the electrons break free of the layer and begin to move. As the electrons cannot go back through the one way barrier, the only way they can move is through the circuit the cell is connected to. That is why the solar cell will generate a current if it is attached to a circuit.

If a solar cell is NOT attached to a circuit, there is no opportunity for electron flow and all it will do in the sunlight is heat up.

Roger.

For more details on the operation of solar cells, the chemistry involved, types of cells and much more, visit http://www.green-planet-solar-energy.com. This site gives clear explanations of the major concepts behind the operation of solar cells.