The principles of solar electricity

A solar panel generates electricity using the ‘photovoltaic effect, a phenomenon discovered in the early 19th Century, when it was observed that certain materials produced an electric current when exposed to light.

To create this effect, two layers of a semi-conducting material have to be combined. One layer has to have a depleted number of electrons. When exposed to sunlight, some of the photons are absorbed by the material which excites the electrons, causing some of them to ‘jump’ from one layer to the other. As the electrons move from one layer to another, a small electrical current is generated.

The semi-conducting material used to build a solar cell is silicon. Very thin wafers of silicon are cut and polished. Some of these wafers are then ‘doped’ to contaminate them, thereby creating an electron imbalance in these wafers.

The wafers are then aligned together to make a solar cell. Conductive metal strips are attached to the cells to take the electrical current.

When a photon hit the solar cell, it can do one of three things: it can be absorbed by the cell, be reflected off the cell or pass straight through the cell.

If a photon is absorbed by the silicon, this causes some of the electrons to ‘jump’ from one layer to another. An electrical circuit is made as the electrons move from one layer to another, creating an electrical current.

The more photons (i.e. the greater intensity of light) that are absorbed by the solar cell, the greater the current generated.

Solar cells generate most of their electricity from direct sunlight. They can also generate electricity on cloudy days – and some systems can even generate very small amounts of electricity on bright moonlit nights.

Individual solar cells typically only generate tiny amounts of electrical energy. To make useful amounts of electricity, these cells are connected together to make a solar module, otherwise known as a solar panel or, to be more precise, a photovoltaic module.

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Benefits of Using Solar Energy

Solar energy is completely free, after the initial cost of your solar power system. However, it can be cheaper if you choose to build your own DIY solar panels. The main point here is, twenty years from now, the energy you are collecting by your own home solar power systems will still be free.

Benefits of Solar Energy:

1. We never have to worry about running out of sunlight. The sun is a consistent power source meaning it is always going to be there every day.
2. Compared to fossil fuels which release greenhouses gases. Solar Panels don't release toxins into the air.
3. Solar panels are extremely reliable. There are no moving parts so you do not have to worry about replacing anything. The panels generate home electricity for thousands of hours with no maintenance other than a clean.
4. Power panels make no noise while collecting the suns energy and no other renewable energy or power source are completely silent.
5. Electricity generated from the sun is cheaper than buying it from the power (electricity)company.
6. Start up cost is expensive but once you recover your outlay, the panels start making you a profit and a return on your investment.
7. Solar panel home systems have a huge variety of sizes and shapes. There is an entry point into renewable energy and solar electricity systems for everyone from top range that cost tens of thousands of dollars to a couple of hundred or a cheaper opinion is homemade solar panels.
8. Live off-the-grid and never pay another power bill. You are not required to connect to the power grid. You can be completely self-sufficient.
9. Large home solar panels generate excess electricity and you can sell this excess electricity back to the power companies.
10. Government tax credits. Most governments will provide some kind of tax credit or incentive for people purchasing home solar energy systems.

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Battery Reconditioning

Many people are learning how to recondition batteries these days to save some money instead of buy new expensive replacement batteries. If your laptop battery or the battery for your drill has failed it is not cheap to replace them. This being the case, battery reconditioning looks promising.

You are not limited to reconditioning just the battery for your laptop and drill; many other rechargeable batteries can be done also, including your car battery. If you are short of cash or live somewhere that has very expensive car batteries or they are hard to get, reconditioning would help you extend its life.

It does not matter where you live in the world, reconditioning batteries can be done. It takes some inexpensive instruments to do this, and can be done at home. You can even make this a business and help others save money by reconditioning their batteries for a fee. You never know, this could turn out to be a very good business opportunity.

You could pick up other peoples rechargeable batteries that are going to be thrown out, for free or very little cost. Recondition these to sell at a discount and make some extra money. Reusing these batteries is helping to keep them out of landfills and helping the environment.

There is more than one way to recondition battery, these procedures you can learn from any of the books available online which will show the step-by-step process. Once you do it a few times you realize how easy the procedures are.

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Generate Your Own Electricity With Solar Power System

Our power bills are slowly but surely rising, during the summer months we use more electricity because we need to cool down the house and ourselves. People are starting to look for alternative energy sources because they just do not want to pay that much. A DIY solar power system look like a promising technology and if your house is located in good spot then it is a good idea to invest. By investing an purchasing PV cells or building solar panel you can cut down on your electrical costs. Though you need an initial investment and yes this will come back pretty soon especially during the summer months.

Before we start dissecting a solar panel to figure out how it works we should understand the nature of light. The light is made out of photons this particles are fast moving atoms. Our Sun is bombarding Earth by the trillions each moment. Photons move with the speed of light because they have a lot of energy and our goal is to harness this energy and produce electricity. It is an interesting fact that on a clear day at sea level 1KWh falls on a square meter and this is enough energy to power up most of the household equipment in an average home.

Photons can interact with matter in a couple of ways: they can be reflected when it hits a mirror, it can be absorbed so it is energy is turned either in heat or electricity, it also can suffer transmission when it does not lose any energy just goes through, this is the case of windows, and last there is the effect of scattering when the photon interacts with molecules in way that it forms a rainbow thus dispersing its energy.

Now solar power can be harnessed in two different ways you either use it for heating or generate electricity. When solar power is converted to heat the next thing to do is to transport it to the place where you need it and this is done by conduction or by convection. When the heat reaches it is target destination it will be used to heat up swimming pools, cook, make tea and so on and so forth. When electricity is created they use photovoltaic cells PV for short. These crystals are made out of semiconductors which when they come in contact with photons they produce electricity. You most likely have seen PV cells on you calculators which do not use any batteries or on ecologically friendly houses and businesses. The Sun will be shining for the next 6 billion years so we do not have to worry that there won't be enough energy to go around.

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Home Solar Panels Are Environmentally Friendly Systems

At present, carbon dioxide is one of the most talked about atmospheric pollutants. Even though carbon dioxide is a natural part of the atmosphere, in recent years, we as humans have began to overwhelm the earth's eco system to the point where carbon dioxide has begun to reach toxic levels. We introduce carbon dioxide into the atmosphere in many ways, but one of the primary ways is via burning woods or fossil fuels for heating. Home solar power systems do not emit carbon dioxide and when we replace traditional energy sources such as wood or fossil fuels with solar panels, we decrease the amount of carbon dioxide that we introduce into the atmosphere.

The upfront purchasing and installation cost for DIY solar power systems on the typical home is currently more than the cost of equivalent traditional energy appliances such as radiators, hot water heaters, and so on. Things are changing however as recent advances in solar panel technology not only make them cheaper to produce but also increase their kilowatt output efficiency. This means that even though the initial upfront investment costs may be higher for solar panels, the long term payback in energy saving will be more dramatic and occur at a quicker rate than ever before. If you want to free yourself from the spiraling costs of oil and gas, now may well be the perfect time to take a new look at the solar technologies available in your city and state.

Home solar panels, in general, have less moving parts than traditional energy appliances so there's less to go wrong. Typically, once a year you'll have to do a visual inspection, but for the most part, assuming that you've purchased quality panels, once the solar panels are in place, there's not much you have to do to maintain them - estimates range to less than 20 hours a year.

It's been a long road getting here, but solar power is finally coming into its own. And not a moment too soon, because we can no longer afford the energy sources of the last century.

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Ways To Build Solar Panels At Home

Many people have been researching on building solar panels to lessen dependence on the utility company so that they can have a back up source of energy in an emergency situation. However, once they get started and see how easy and inexpensive it can be, they begin to do so and totally free themselves and soon become free from the electric company and often use the electric company as a back up to their solar system.

The true benefits of learning build DIY solar panels and installing them is that as you begin to learn how to build solar panels you are saving money, energy and the earth. So you are being kind to your family economy, future generations of people and to the Earth, as we know it.

While saving money is a great reason to learn how to build a solar panel, it is really sort of icing on the cake. There is a sense of satisfaction that go along with creating something that frees you from dependence on a large utility company. In fact many families make it project that they can all get involved with so that that sense of pride and accomplishment covers the whole family.

If you involve your children in the project and they learn how to build solar panels, it can become something that interests them. There fore as they grow into adulthood they may be more likely to become involved in it with their family. This can be a cycle that is great for everyone.

Learning how to build solar panels is the beginning of the job. You will then need to learn how to effectively harness, store and distribute that power. Again, this is all fairly simple to do and can be done, for the most part with commonly available items from the Internet.

You can work on what you learn about how to make solar panels as a part time hobby and as time and finances allow. It is not doubt that you will find yourself being drawn in and building more of them as you get into the build process.

Learning how to build solar panels can be a hobby that can and will pay you and your family significant dividends over your lifetime. The Internet is a great place to learn about making these things and a phenomenal place to save money on the parts once you begin to build.

If you take the time to learn how to do it correctly you will find that you can easily construct a quality panel over a fairly short period of time and in no time at all you and your family can begin to pull yourself off the commercial power grid and become more and more sufficient on yourselves.

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Solar Power Systems - Harnessing Energy From The Sun

Harnessing the sun's energy is currently being supplemented by support from federal governments worldwide. Either through direct government building or providing incentives to encourage businesses and individuals to take greater advantage of solar energy technologies that are available today, governments everywhere are beginning not only to see the advantages of using solar, but seizing it. Click here to read more - home solar panels and DIY Solar Panels

Solar energy in remote locations...space satellites, roadside emergency phones, isolated buildings, solar powered road signs...are all indications that solar energy is quickly moving forward in these arenas.

Solar powered automobiles are rapidly making their way to the forefront of energy-efficient transportation...in a nick of time. As gas and oil prices rise rapidly, having a solar-powered automobile or hybrid makes more sense to more people every day. This, in turn, of course, gives the necessary incentive to automobile makers to produce more electric and hybrid vehicles.

What the world may look like with solar energy is definitely a bright picture. The solar version of driving in the densely populated cities in various locations in the world...New York, Los Angeles, London, Tokyo, Cairo...will be significantly different than it is today.

With new materials in solar roofing, the bright, shiny roof tiles, or sparkles that you see on roofs will be solar energy being spread across the rooftops of the world. The exterior walls of our buildings will be more than just walls...they will be solar collectors as well. Some farmers may elect to produce a new crop...solar cell PV cells, or thermal troughs, and previously empty space in deserts and open prairies will be used to capture and store the sun's energy. Whatever methods work and are used, capturing and putting the sun to work in solar power systems will make this a better place to live.

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