Solar energy is an excellent source that has the potential to greatly reduce environmental pollution. Unfortunately, it’s recognized as an “alternative energy” since it isn’t an energy source used by a majority of the population. One of the main reasons is that it’s still quite costly to manufacture. Right now, calculators and decorative outdoor lights are a couple of the most popular solar powered gadgets. The question remains, how do solar panels work? How does setting up a small panel, directed towards the sun, turn the sunlight into the electricity that keeps those pretty, bluish bright lights lighting up the walkway all night long?

Solar panels are made from special materials that absorb the sun’s rays and turn them into electricity that can power all sorts of electronic devices. Devices that we use electricity for everyday without thinking twice about could be powered by solar panels.

A budding technology used today for solar panels is photovoltaic (PV) electricity. It involves the use of specific materials that convert solar energy into electricity. The electricity can be used right away or it can be stored using DC batteries. Either way, we’ve got power!

These materials have been recently developed and they release electrons when prompted by sunlight. Another name for a photovoltaic panel is a “direct energy conversion device”. All of these effects take place on an atomic level without any moving parts.

Historically, only space age technology used photovoltaic panels. Space stations and satellites used them because they were a reliable source for continuous solar energy conversion. The extra bonus that using them in outer space has is that the sun’s radiation is at least 50% stronger than it is here on Earth.

Those living far from an electrical grid, more than a mile, are more likely to use photovoltaic technology, especially in residential homes. Power transmission cables cost way more to install than a photovoltaic power array would. If you’re a notable distance from an electrical grid, then it may be a good idea to consider solar energy for your power source.

But the question hasn’t been fully answered yet”how do solar panels work?”, and to better understand this we should know what solar energy is. Solar energy is made up of two kinds of radiation. The first and the best kind for solar panels to function is called “beam radiation”. Imagine you are laying on the beach in the middle of June on a bright sunny day. Feel the sun’s rays beating down on your skin. The energy you feel on your skin is “beam radiation”. A clear blue sky is a good day at work for a solar panel, but that solar panel needs to be properly placed in order to absorb the most direct sun rays as it can to achieve optimal results.

The other kind of radiation is “diffuse radiation”. This radiation is strewn all over the place (as its name suggests). On a cloudy day, it’s the primary radiation source for a solar panel. It’s the same thing if you’re relaxing under a shade tree diffuse radiation is what you’re going to get. Unfortunately diffuse radiation isn’t very strong and relying on it alone for solar energy isn’t practical.

Needless to say, a bright sunny location is the most desirable place to mount a solar panel. Most of Western America is solid as far as good sun for solar energy goes. Northern climates and coastal states stand to face some difficulties since diffuse radiation is what they get most of the time.

Solar panels are versatile in the sense that they can be set up to meet specific needs. 12 volt, 24 volt, and 48 volt DC systems are the most widely used. 12 volt solar panels can live well over 20 years and fall in the range of 12-14% efficiency.

Today’s production of solar panels consists of using supremely pure silicone semi-conductor materials. This is primarily what makes the use of solar power so expensive. Luckily there are new materials in the making and they’re particularly geared toward lowering the cost of production, thus lowering the cost for the consumers. Cadmium Telluride based solar panels are an example of new solar energy technology, and if these materials are successful in the final outcome then the price of solar panels should greatly decrease, making our environment that much cleaner as more and more people convert to solar power.

It’s unfortunate that solar energy is still considered “alternative energy”, but that’s all changing. If you’re considering a conversion to solar power then there are specific considerations to be made upon deciding, but it’s definitely a step in the right direction for our planet. The benefits outweigh the cost as far as our environment is concerned, especially the long term effects. Energy independence is a common goal for all, and if you just want to consider solar energy as a back up plan, then the decision is practically already made for you. Why not? The environment will benefit greatly once solar panels become financially available to all.

To find out more on how solar panels work get more information here.

Once the decision is made to install solar panels, one must determine how to mount them effectively. The mounting system should be simple, reliable, and provide for all your performance needs.

Solar panels are often mounted on roof tops, because the roof structure is strong and already exists. If your roof is sloped in the right direction, then how convenient this is. And convenience is a legitimate player in any decision making process.

We would like to point out a couple issues with mounting solar panels on the roof, however. They are things to keep in mind for folks who live in northern climates, or who desire more optimal performance.

The first issue is the snow. When snow builds up on your solar panels, this will drastically reduce your electricity. And if your solar panels are on the roof, then cleaning them can be a little tricky.

As machine designers, we decided to tackle this problem common for us in the mountain regions. We don’t mind the snow, but the last thing on our minds is climbing the roof in Winter. So we developed the Rotek system, a simple mechanism for mounting solar panels that will improve performance and take on the snow.

In a Rotek installation, the solar panels are mounted on a ground based structure instead of the roof. This provides the clearances for adjustability, so that we can rotate the solar panels in any way. With this in place we can make seasonal adjustments to match the Sun.

In the Winter is when this adjustability can be a big help. The solar panels can be pitched more steeply or rotated toward the ground (negative tilt) to keep the snow off the surface. It is also good for giving the glass an occasional cleaning.

Whether for one snow storm or for a period of weeks, as long as there is snow on the ground you can leave your solar panels at negative tilt. As we have all witnessed, snow pack is highly reflective. Your system will continue to receive lots of beam radiation despite this abnormal tracking angle.

The second big issue to consider is heat. As our roofs accumulate heat, they will increase the operating temperature of a roof mounted solar panel. Performance tests have shown that higher operating temperatures will reduce the solar panel’s discharge current. This lost current output can be as high as 2 or 3 amps depending on the unit, which correlates to better than 20% energy lost against baseline operation.

Remotely installed solar panels will run cooler, and the electrical output will be better for this. There is fresh air to circulate on the back end (instead of a hot roof), and they can be located closer to the ground. The Rotek system, if used, would provide this additional advantage to your solar panel system.

So now that the decision is made to install your solar panel system, you must choose a mounting configuration. The roof mounted options are simple and in many cases a good choice. For those who want a little more performance and design flexibility, the Rotek system is a reliable and inexpensive alternative worthy of consideration.

Walter Hull is a mechanical engineer with expertise in solar energy power systems. For a limited time you can get his free report to solar energy from your own backyard.

The Sun can be thought of as a giant nuclear furnace stationed in the sky. It is a tremendous source of solar energy, cranking out massive amounts of radiation each and every day.

This solar energy arrives to Earth as electromagnetic radiation, where it is absorbed and utilized in the biosphere in numerous ways. The Sun and solar energy it emits is arguably the most essential element to our existence.

This electromagnetic radiation, also referred to as light waves, includes an entire spectrum of different wavelengths. X-rays are some of the shortest light waves, where as radio waves are some of the longest. Solar energy falls in between, composed mostly of infrared waves, waves (colors) visible to the human eye, and ultraviolet waves. Life on Earth has heavily adapted toward these wavelengths that we receive.

Solar energy plays a primary role in all biological and thermal interactions on the Earth. With the presence of carbon dioxide, water, and solar energy, plants are able to produce energy through a process called Photosynthesis.

The Earths natural landscapes, they absorb solar energy and produce heat. It is the heat absorbed by mountains and plains that create local wind patterns. It is the heat absorbed by the oceans that creates the famous currents. Solar energy is responsible for thunderstorms, tornadoes, and hurricanes. It melts the mountain snows which form many of our rivers.

Solar energy is the catalyst for almost everything that occurs on Earth. It is as though the Earth has its own power plant, a giant Nuclear Fusion Reactor in outer space. It is a good thing too, because without it we would all be screwed.

Each and every day we should all be giving thanks to the Sun. It may be the most important element to our existence which we take for granted. Imagine if one day we woke up and there was no Sun? It would be like losing power at your home, but a million times worse. Probably most people would fall into an immediate panic.

So if theres one thing for sure, as long as solar energy is here humans will be here. Solar energy is responsible for almost everything that surrounds us, in every form.

With the recent advances in materials and industry, we now find ourselves with some new inventions for working with solar energy. It is now possible to make electricity directly from sunlight in a photovoltaic device. We can harness solar energy in absorption and concentrating collectors and store the heat.

We are entering a new age of energy generation for fulfilling our daily needs. We believe modern civilization has only just begun with these new age energies. Reaping the benefits of solar power and solar heat is in its infancy.

How practical is current technology for providing power to our homes? How much money will it cost, and how much will we save in the long run? What kind of new solar energy technologies are in development? We started out asking these same questions ourselves, and we are here as professionals from the Energy industry to present a few honest answers straight from the energy specialists.

To learn how to use solar energy as a budget source of electricity for your home get Walter Hull’s checklist on easy solar power from your yard.

Wind energy has been used for many years as individuals have used wind power for sailing, wind mills for manufacturing and pumping water and more recently conversion into electricity using wind turbines. Wind power is a renewable energy that is considered a good option instead of burning fossil fuels. Of all the renewable energy sources it is the most efficient and you only need a light breeze to produce electricity.

The very first uses of wind for energy was in the form of wind mills and sailing as people have been using wind for more than thousands of years to propel ships. Windmills have also been used for many years for milling grain as well as pumping water for irrigation. These irrigation windmills was the main reason that farming and ranching could occur in the US, as there are vast stretches of land that do not have ready access to water.

The very first usage of wind to create electricity occurred in 1888. The first wind turbine was used to create hydrogen in the 1890s but it was soon converted to producing electricity. Small wind turbines are used to provide power to rural buildings and today there are larger wind farms that are being used to produce electricity for large networks. What is known as the modern wind industry really began in 1979 when wind turbines began to be regularly produced.

Wind occurs because the surface of the earth is not evenly heated, as the poles get less sunlight than the equator. This causes cooled and heated air to move which in turn produces wind. It is projected that the amount of power that could be harnessed form the wind is more than the human population currently uses. So just think about having almost cost free power.

The amount of power that is generated by the wind is dependent on the speed and as the wind speed doubles the amount of power produced increases eight fold. However there is a cap as wind turbines can only go so fast and generate so much energy. You do not need high winds at all time though as a lot of energy can still be produced with 15 mph breezes. As such, wind power is a valuable method for alternative energy.

The main issue with wind energy is storage as wind power cannot be dispatched at different times but needs to be used immediately. Many companies have looked into different types of batteries, storing it within the energy grid and even hydroelectricity. Many times surplus energy from domestic wind turbines are fed back into the electrical grid and the energy company will purchase this energy and you will receive electricity credits.

A wind turbine used to collect the power of wind will contain a rotor shaft, gearbox and brake assembly. Generally within a wind farm the different turbines are interconnecting for power collection and communication networking. Wind energy uses induction generators to collect the power and change it to electricity.

The best types of generators are doubly fed machines as they will function when errors occur within the grid. You need to be aware of the power factor, dynamic behavior and frequency constancy when a system fault should occur.

Wind power should be thoroughly considered in order to promote a greener society. Educate your children to become future scientists by purchasing them science lab equipment.

Chances are, you are already using solar energy in a variety of forms. It is the primary fuel source in the creation of food, fresh water, petroleum, and wood. The question we propose is “why use solar energy to power your homes”? Is it realistic for generating useful heat and electricity?

The answers to this question are simple. There is no other source of energy on the planet more reliable than solar energy. When is the last time you woke up in the morning and there was no Sun?

The other great benefit is that solar energy is cheap. The Sun does not send out monthly bills, and last we checked there are no taxes on solar energy. If there is a less expensive source of energy on this planet, then we would like to know.

Yes, it is true that solar energy systems are not the most efficient. But you will be using the lowest costing and most reliable fuel source on the planet. No monthly charges, and no swings in the markets. And most important for some us, we are covered when there are power outages, emergencies, and large storms.

The difficulties in using solar energy are with selecting the right application and the right equipment. How much does a solar energy system cost and how difficult is it to integrate? How simple or elaborate should it be? In my location, is solar energy right for me? Here we present a few straight forward answers to help your case.

People who live in locations with a regular pattern of sun, absolutely you should use solar energy. You could be saving money and helping the environment all in one.

If your climate tends to be cloudy and rainy most of the time, then probably solar energy is not for you. Coastal climates and northern winters tend to be tough for this. But this does not mean you should not investigate, there may still be some opportunity.

When it comes to making heat and hot water with solar energy – absolutely. We call this passive solar heating. These are low cost systems that can be designed directly into your business or home. The designs for passive solar heating systems can be relatively simple and inexpensive.

When it comes to making electricity from solar energy, the answer will depend on many things. Truth be told, the combustion engines and furnaces at the local Utility are sometimes hard to beat.

If your household or business consumes lots of electricity then solar power is hard to justify. This is where local Utilities are good, they can kick out the juice for all the high power users and the heavy duty industries. But if you are simple in life and efficient in how you use energy, then the up-front cost of solar power can pay off over time. It could be as little as 5 years depending on the electrical rate of your local utility (i.e. California)

They will also pay themselves off if developing a new property and avoiding the installation of electrical transmission cables routed to your home. Depending on the distance, these transmission cable costs can be significant.

There is one more possibility with solar energy – emergency reserve capability. If you were ever involved in a natural disaster, then how great would it be to generate your own heat and electricity? Simply turn on your inverter system and ride it through.

The truth is, mankind is making good progress with solar energy technology. By engaging in independent and gridless energy systems, we can save a little money, help improve our environment, and set a good example for our kids. It is not such a bad idea to simplify our existence.

Walter Hull is a recognized expert in solar energy power systems. For a short time you can get his free guide to solar energy from your own yard.

The major past energy sources have included petroleum and coal. With the sharp increase in energy prices, depleting non-renewable sources of energy, the increase of green house gases impacting global warming, the future of using alternative ‘green’ sources of energy looks bright. Governments around the world are feeling the pressure of consumer demands for alternative renewable energy sources that will not harm the environment.

Wind Power is one method of producing ‘green energy’ that is becoming popular all over the world. Wind turbines are used to create power. Wind turbines can be placed wherever there is sufficient amount of wind. The higher the number of installed wind turbines, the more electricity will be produced.

Solar energy is one alternative energy source that is expected to see an increase in use in the future. This form of energy makes use of the sun for power and heat. Solar panels harness the power of the sun without polluting the planet and atmosphere. The solar panels power generators provide the electricity. The solar panels are installed on the roofs of residential and commercial buildings. In the future, larger solar panels will be built that can power hundreds of thousands of homes Solar energy requires does not require any other energy source to operate and it is free of pollution. Sunlight can be harnessed as usable heat or converted into electricity using photoelectric cells, solar panels, or using synchronized mirrors called heliostats that follow the sun as it moves. Methods for using solar power to replace a gas-powered engine by heating hydrogen gas in a tank have also been developed. There have been positive results with powering a generator.

Hydro Power is another alternative energy source with proven results. The flowing water drives the turbines which produces the energy. The energy created is dependent on the strength and force of the water flow because rapid flowing water drives the mechanisms that help with producing electricity. The current is then sent through a transformer where the electricity is transmitted over power lines. This is an eco-friendly form of energy and in the future, it is expected that more hydro power stations will be erected where there is a suitable water supply.

Current technologies for new renewable green energy sources, particularly solar power and wind power, are proving to be quite promising for the future. As well, Geothermal Energy which is heat energy extracted from the earth to create steam to power the generators that produces the electricity, is another potential future large energy source. There is also much research and development going into Nuclear Fission. Salinization of water at river estuaries as an energy supply is another possible source of alternative energy because many experts suggest that it will be millions of years before there is any impact. Nuclear fusion and artificial photosynthesis are two other energy technologies currently being researched as possible future energy sources.

Much of the traditional sources of energy are becoming unsustainable making new greener sources of energy the wave of the future. Many corporations, ‘green’ entrepreneurs, and governments are investing in the future of the planet and its inhabitants by investing in alternative renewable energy sources. An investment in ‘green’ energy means a future of low energy costs and a greener sustainable environment.

Alternative energy sources don’t have to be hard to come by. If you want to experiment with green energy, look up for more resources online. There is a huge repository of information waiting for you there.

If you want to go to solar power for your home or business then now may be the time to do it. Though you will probably still have quite a bit of out of pocket expense, if you live in the United States then you will most likely qualify for tax incentives to offset some of your cost. You should keep in mind that these systems are expensive but they may save you a lot of money as well.

This is energy generated by the sun. To harness that energy you need a special system in place that will transfer sunlight into power that will run the electrical devices in your home. These systems usually consist of panels and converters. They must be installed by licensed professionals for safety reasons. You local electrical company may have personnel on hand as well.

There are many sites that say you can build your own solar power systems. As tempted as I am, I am also skeptical. I have a hard time believing I can build anything that is legal and will produce power for my home without starting a fire or an explosion. However I may let my son try these as a science project if nothing else.

In years to come we may see a significant reduction in the use of fossil fuels. These are in limited supply and we have to start preparing for a time when they may no longer be available. Not only is solar power a great way to start saving these fuels but you can save money on your electrical bill as well.

You don’t even have to worry about cloudy days. Solar energy work with your regular power source to make sure you always have electricity. They combine to ensure you stay up and running weather it’s your home or business. If the solar energy is low it simply and automatically switches to your alternative energy source.

At least one site did mention the need for permits. This may be a very complex project and you will need to do some research before trying any do it yourself kits. There are special boxes needed and it sounds fairly complex.

Some of the products that run on solar power are nice and you don’t need a special system installed. The outdoor lights look really great. They are easy to install and no cords to run or trip over. The cars are still a long way from being marketable though.

If you are thinking about going with solar energy then check all local laws regarding this and at least get professional advice before you begin. Keep in mind that any time you work with any type of electricity proper precautions must be taken and safety should always be your first priority.

More and more people are switching to solar power at least in part for their homes and businesses. You can start now or wait a few years until the prices come down and supplies are more widely available. The sooner you get it the sooner you can save money on your electrical usage.

Solar power provides an efficient and environmentally friendly source for energy. In order to promote a greener society, wind power should also be considered as an alternative option.

We tend to all enjoy the idea of getting readily usable hot water in our homes, and it’s the presence of hot water heating systems that produces this possible.

Whatever your needs might be, the use of water heaters in houses is something that you will positively need to think about if you’re going into a recently build house, or simply seeking out a new heating unit for water.

There are several completely different types that you will want to decide on, and I plan to expand further concerning 3 of the most widespread styles. Hopefully you will decide which one of them is optimally suited to your house and wants, resulting in a worthy buy.

If you are like most homeowners, you will just need to buy a gas water heater. There are a number of reasons that people opt for gas, and maybe the biggest one relates to the reality that gas water heating systems are the cheapest to buy.

On the other hand, they’re most likely the toughest to maintain due to the fact that they will require constant gas refills so as to keep them running.

If you’re one who has a preference for ease of use, then you might want to choose an electric hot water heating system. The rationale for this has to do with the very fact that all you’ll have to do is leave it plugged in, in which case the heater runs on its own, supplying you with very readily accessible hot water any time you need it.

One last choice that seems to increase in presence year in and year out is the solar water heater. This is the most energy efficient way of doing things, and you’ll rest assured that you will not have to fret about expensive electric expenses.

On the other hand, this hot water heating system can typically sell for a lot more money than the alternative two models previously discussed.

Learn more facts about on demand hot water heaters at this author’s blog.

Everyone wants hot water in their homes, and many homeowners are forced to look into hot water heating systems as a means of ensuring the optimal temperature for their showers and other activities.

If you’re currently looking into the different possibilities, you’ve probably seen that there are a few different types. I’d like to review them in further detail with you as it’s important to identify the best fit for your home.

The most popular type is the gas hot water heating system because of the fact the cost of buying one is essentially lower than any other type. These will cost a few hundred dollars, powered by propane or other gas.

On the other hand, there are a few negatives that come with the territory too. These are a bit harder to set up than other devices, and any owners of these will constantly need to purchase gas refills to keep the unit going.

Since many prefer to avoid the time and effort that comes with refilling the gas supply, an electric hot water heater offers a lot more convenience. However, these consume a lot of energy too, adding up to high electric bills each month as a result.

Perhaps the lowest maintenance device is the solar hot water heating system, though it’s also the most expensive. Since the energy cost here is nonexistent, this is a great option for those who can afford the cost. These solar devices continue to grow in popularity.

If this is out of your price range, the on demand hot water heater might be the perfect solution for you. Your energy costs will be reasonable since the unit only runs when you want it to, though without advance planning, you may end up having to wait for your water to heat.

Now that you have a basic understanding as to the most popular options, hopefully one of these hot water heating systems makes the most sense for your situation. Review the possibilities thoroughly by doing some more research, and I’m confident that you’ll find a great fit for your home and your needs.

While we’ve gone over the basics of the different types here, a lot more reading about solar hot water heaters can be accessed by those looking for more information.

Solar energy is heavily promoted for its ability to produce a clean form of energy production. It does not pollute the environment and therefor considered a very green technology.

Thermal conversion and photovoltaic conversion are the two methods of solar energy used today. Using the heat of the sun to make electricity is known as solar conversion. Specialized material that can directly turn sunlight into electricity is involved in photovoltaic conversion.

As the name implies, solar thermal conversion takes sunlight Sunlight Powered This also uses reflectors and mirrors to create large amounts of heat from exposure to the sun. (thermal). The method used to start fires with a magnifying glass is called solar thermal conversion. You are able to create a very small space of very intense heat using a magnifying glass. Actual solar cells used to store heat use this method to superheat liquids that produce steam. It is the resultant product, namely the steam that sets the turbine in motion to generate electricity

Photovoltaic Conversion essentially means light that is converted to electricity. Photovoltaic cells usually consist of panels, which contain two layers of different materials. One layer becomes positively charged and the other negatively when light hits them. Very much like a regular battery, which has a positive end and a negative end, when a wire connects the two ends, they produce an electric current. When you expose the two layers inside a solar panel to direct sunlight, electricity is created.

The efficiency of a single solar cell is determined by its exposure to direct sunlight. Both time and intensity of sunlight will play a factor.

Solar cells are used today to power anything from small personal devices, such as cell phones, to large communities. Solar power offers many benefits including the fact that it can be portable, and that it protects the earth.

As stated earlier, anytime someone uses a handheld or lighted magnifying glass to get a fire going, have used solar energy.

The devices offered today are more efficient and effective then ever before. The use of solar power is very promising for our use now and into the future.

Learn more about creating energy with solar power and a magnifying glass. Stop by Julie Manther’s site where you can find out all about intensifying light with a lighted magnifying glass and what it can do for you.

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