TruthAboutSolarPower.com http://truthaboutsolarpower.com/blog ......the truth about solar power Mon, 25 Jan 2010 18:30:41 +0000 http://wordpress.org/?v=2.8.6 en hourly 1 The Truth About Solar Energy http://truthaboutsolarpower.com/blog/solar-energy/the-truth-about-solar-energy/ http://truthaboutsolarpower.com/blog/solar-energy/the-truth-about-solar-energy/#comments Mon, 25 Jan 2010 18:30:41 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/the-truth-about-solar-energy/ Electricity generated from solar power (photovoltaic – PV) is steadily proving to be a clean, reliable and essential power.Although naysayers, like fossil-fuel competitors, want us to think otherwise, I can easily demystify some common falsehoods about solar energy because progress and continued research proves that the current and future technologies of PV will meet our needs for cleaner power, which definitely is information worth discussing over any dinner party. First of all most naysayers contend that solar energy cannot deliver any major portion of electricity to the states or the world for that matter. This is a falsehood based on the fact that PV technology can meet the required demand. That a 100-mile-square area of Nevada could supply solar energy to the states with all its electricity (roughly 800 gigawatts) operating reasonably efficient (10%) commercial PV modules. Land, parking lots and rooftops are available for use to generate enough power. An estimated 17 by 17 miles per state is the required amount needed to produce 800 gigawatts. Apparently, there are enough “abandoned” sites that could be used for solar panels.Supporters of solar electricity definitely have proven that PV can supply a major portion of the U.S. electrical needs with their projection of an increase of at least 15% of new added electricity capacity in 2020 with another increase of 10% by 2030.Another falsehood I hear quite regularly is that photovoltaics will never become a huge industry. It’s a boutique business for a small group of privileged consumers.Quite the contrary, solar electricity is a full-fledged business that has been growing steadily for more than 35% per year over the past 2 years. As a matter of fact, it’s been reported that the U.S.-based industry itself is reaching the $1 billion mark per year and providing 25,000 jobs. In the next two decades the growth rate is expected to rise to the $10-$15 billion level, thus provided 300,000 jobs by 2025. We are talking a major expansion of solar electricity as a tried and true power source.Another very common falsehood that I hear at dinner party conversations is the PV is too expensive and will not ever compete against all mighty fossil-fuels – the industry will never manufacture the energy that it takes to produce the system.Do I have a smirk on my face? Yes. This is so far from the truth, it is ridiculous. The overall cost of producing PV modules has dropped from 1980 at $50 per peak watt to as low as $3 per peak watt, presently, bringing the competitive applications to as low as 15¢-25¢ per kilowatt hour (kWh).One can simply take a look at the market in California. The state incentives and net metering alone have places, PV electricity prices below 11¢/kWh, which is in the norm with some utility-delivered power. Designed for most domestic markets the trend is projected to continue through 2010 for most domestic markets.Technologically the thin-film modules that are being implemented today payback in one year or even less, which means clean and practically free of overhead energy for the remaining 29-year life expectancy of the modules.

Cooler Planet is a leading solar resource for connecting consumers and commercial entities with local solar Installers. Cooler Planet’s solar energy resource page contains articles and tools such as our solar calculator to help with your solar project.

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]]> http://truthaboutsolarpower.com/blog/solar-energy/the-truth-about-solar-energy/feed/ 0 Researching the Rationality of Solar Energy Use http://truthaboutsolarpower.com/blog/solar-energy/researching-the-rationality-of-solar-energy-use/ http://truthaboutsolarpower.com/blog/solar-energy/researching-the-rationality-of-solar-energy-use/#comments Sun, 24 Jan 2010 20:03:43 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/researching-the-rationality-of-solar-energy-use/ Use of solar energy as an alternative to fossil fuels has been widely discussed in recent years. Heavy reliance on fossil fuels, and, as a consequence, dependency on scarce resources usage of which has a negative impact on environment led to search of alternative sources of energy. Passive solar design has a number of advantages when it comes to alternative energy solutions due to low cost and high level of efficiency.
Integration of passive solar design reduces the need for mechanical heating, cooling, and artificial lightning during the daytime which is cost efficient in the long run, minimizes energy consumption and, as a consequence, dependency on non-renewable sources of energy, is environmentally clean, and can be easily implemented independent of the geographic location. The debates on the issue are ongoing. And even though there is some rationality to claims of opponents of solar design solutions, their perspective on the issue is short sighted, since aside from purely economic benefits, opponents fail to consider dependency on non-renewable sources of energy such as fossil fuels which will gradually become an economic burden for the vast majority of countries throughout the world.
Passive solar design of buildings does involve more initial spending, since it includes such passive solar features as thermal mass, increased glazing and overhangs. However, due to the fact that buildings with solar design require substantially less mechanical heating and cooling, annual reduced maintenance costs will be realized over the whole life time of the building. Going even further then this, since individual design of buildings is not required, but largely it will vary depending on the climate zone; cost per building will reduce, as the number of building with integrated passive solar design increases.
The experiment proved to be very effective in China. Country was subdivided into five major climate zones and comfort zones based on the climate zones have been developed. Further, bioclimatic building design charts have been developed, and finally, the system was implemented. The results were astonishing: in Guangzhou due to integrated natural ventilation mechanical air-conditioning would have to function only 17% of its initial work load, while Kunming initially required mechanical heating 80% of the time in a year, now supplementary heating is required only 10% of the year, in Beijing required mechanical heating would can be limited to 30% through with the passive solar design used during the construction process. This is a perfect solution for China, where fossil fuels are especially scarce as compared with other countries. A similar experiment took place in North Cyprus and implementation of passive solar design also proved to be efficient on practice.

Andrew Shwartz is staff-writer at Custom-Writing.org, essay writing. Andrew has been providing assistance to students with college essay and Writing a Report for over 2 years. He is always willing to share his own experiences, provide quality custom writing services and writing tips to students of all academic levels.
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]]> http://truthaboutsolarpower.com/blog/solar-energy/researching-the-rationality-of-solar-energy-use/feed/ 0 Solar Energy Negatives http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-negatives/ http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-negatives/#comments Sat, 23 Jan 2010 17:45:01 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-negatives/ Change is a watch word for our planet, and changes have been made that have enhanced the Earth. Scientist are exploring the negative effects of solar energy in order to safely replace the energy sources that we presently use with this form.Solar energy has the ability to give us cheaper if not free electricity to our homes through the use of solar panels. However, before you jump on the band wagon and go out and try to start this new power trip there are a few things you should know. There are some people who believe there are many negatives to solar power. Many people believe that thermal solar energy has many health risks when it is used to heat water and the air in their homes. This can happen when it has not been set up properly or the manufacturer made errors when producing it. If it is unable to store the water properly it can cause fungus and molds to grow making anyone who drinks or uses the water sick. To make sure that this does not happen you can make sure that the units used to store the water have been built from materials that are made to prevent this.PV solar energy also as health risks that you need to be careful of. PV (photo-voltaic) panels require millions of silicon dioxide in order to be used. That number is lowered when they are exposed to heat. The materials that are released during the refining process will increase the rate of toxicity and can affect your health. This is one of the more serious negatives of solar energy that is responsible for eleven to twenty one deaths per each quadrillion joules of energy that are created.But do not let this deter you completely. Study up on the different types of solar panels and the negatives as well as the positives. You might find that they are worth it in the end.

There are many Solar Energy Negatives that people should consider. But they will not do you any good if you do not compare them to the Benefits of Solar Energy.
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]]> http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-negatives/feed/ 0 The Many Benefits of Homemade Solar Energy http://truthaboutsolarpower.com/blog/solar-energy/the-many-benefits-of-homemade-solar-energy/ http://truthaboutsolarpower.com/blog/solar-energy/the-many-benefits-of-homemade-solar-energy/#comments Fri, 22 Jan 2010 17:52:18 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/the-many-benefits-of-homemade-solar-energy/ Many people today believe in the importance of going green. As a matter of fact, there are cars right now that are environment friendly. There are also a lot of campaigns against air pollution, burning garbage, etc. When it comes to electricity production, there is also a way to go green. By depending on homemade solar energy to bring electricity to your homes, you will be able to have a more harmonious relationship with mother earth.
Using electricity provided by solar power has so many benefits. Aside from promoting eco-friendliness, it also aids people in saving on electricity charges. Solar power is also renewable which can bring about energy conservation, becoming one way of ensuring that fossil fuels do not immediately run out. Solar power produces both heat and electricity which are two very important elements that we need to survive. By constructing and using the so called solar panels, we can gain solar power, which means that we can get power into our homes in a more efficient way.
Perhaps the most interesting benefit of solar powered electricity is the fact that users get to provide their own energy, thus decreasing the need to rely on utility companies. Bear in mind that almost every year, electricity rates go higher, forcing us to shell out more money every month. With solar panels, however, rising electricity charges may not have a bigger effect on people.
Some people may have second thoughts about using solar powered systems because of the cost to purchase and to have it set up. Having solar panels installed in your home may sometimes reach the cost of thousands of dollars. However, when you think about the benefits and the total percentage of savings you get yearly, having a solar powered system can be better than paying utility companies just to get electricity.
Nowadays, there are also solar panel kits available that are not that heavy on the pocket. To save on money, you may also choose to install the system yourself, especially because the kits normally come with instruction manuals that you can just follow in order to successfully install a solar powered system by yourself. By installing a DIY kit, you may not need to hire professional installers, thus, you get to save money. There are also some government programs in a number of countries that provide rebates and sometimes tax credits to people who use solar panels which also means more savings.
The demand for homemade solar energy is little by little rising because of how advantageous it is. A lot of manufacturers are now able to offer less costly solar power systems. There are also different types of solar panels that can give you the choice of which solar panel is best for your home. If you want guaranteed efficiency and savings, find out first the total amount of power you need, the amount of sunlight you get in your place, etc before purchasing solar panel kits. Look for systems that are easy to afford, easy to buy, and proven effective.

]]> http://truthaboutsolarpower.com/blog/solar-energy/the-many-benefits-of-homemade-solar-energy/feed/ 0 What is Solar Energy? How it Works and Why http://truthaboutsolarpower.com/blog/solar-energy/what-is-solar-energy-how-it-works-and-why/ http://truthaboutsolarpower.com/blog/solar-energy/what-is-solar-energy-how-it-works-and-why/#comments Wed, 20 Jan 2010 20:19:06 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/what-is-solar-energy-how-it-works-and-why/ Solar energy is radiated from the sun through forms of heat and light, this powers the Earth’s climate and sustains life. Today’s technologies can make use of this energy resource. Simply, solar power is the conversion of sunlight into electric power. The technologies that are used to convert the sunlight into power are called photovoltaics, there are also other technologies that have been used such as concentrating solar thermal devices but a lot of the experimental devices such as thermal converters, solar chimneys and solar ponds have also been used.
Solar energy is a much safer and energy efficient way of creating electricity, the use of solar energy has now become an important component to consider when designing a building. This is what thermal mass is used for; because it preserves the heat that the sunshine delivers to the building and can then transfer that heat into electricity. There are also solar water heaters which are a much more efficient way of heating swimming pools, and are a great idea for large hotels and sports pools, which use up a lot of the earths non-renewable fuels.
We also use solar power in agriculture, in particular greenhouses, in case you’ve always wondered what they are for, now you know, because they grow specialty crops, which are difficult to grow out side in the normal atmosphere, instead, the greenhouse uses the photovoltaics, which cause the plants to photosynthesize, which causes them to grow faster and stronger. There are also photovoltaic-powered water pumps for grazing cattle. There are also evaporation ponds which can work in the city and in the country; they are used to harvest salt and clean streams of contaminants.
In the poorer areas of the world, solar distillation and disinfection techniques produce potable water for millions of people. Also for families, and large buildings, family-scale cookers and larger solar kitchens concentrate sunlight for cooking, and in the more industrial work places, more sophisticated concentrating technologies magnify the rays of the sun for high-temperature material testing, metal smelting and industrial chemical production. A range of prototype solar vehicles provide ground, air and sea transportation.
How do the solar power technologies work? Here is an example:
The simplest form of solar energy collection is the FLAT PLATE COLLECTOR, this is a long flat rectangle which ideally would be fixed on to a roof or building in a sunny area.
Dark metal plates absorb and preserve the heat. Coils of tubing are looped throughout the collector, next to the metal plates with air, water or an anti-freeze solution circulating within them. The heat is transferred into the coils and thus the fluid/air as it circulates through the tubing. The air or fluid is either used immediately (as hot water or to heat a room, pool, etc.) or it is transferred to a well insulated holding tank for later use.
These are capable of reaching temperatures of 82 degrees Celsius which is great for heating water or a room.

]]> http://truthaboutsolarpower.com/blog/solar-energy/what-is-solar-energy-how-it-works-and-why/feed/ 0 Solar Energy Explained – A Simple Guide http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-explained-a-simple-guide/ http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-explained-a-simple-guide/#comments Tue, 19 Jan 2010 17:49:02 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-explained-a-simple-guide/ Science has proved that our Sun is a huge burning mass of whirling gases with tremendous heat. The heat is so intense that any object approaching within thousands of miles of the sun’s radius would instantly vaporize. The rays of Sun when they reach the earth bring with them the heat latent it them. This heat is diluted when the rays of Sun disperse in the whole atmosphere. But it is possible to concentrate the rays by a magnifying glass to such a point that the latent heat in them also gets concentrated so much that the object placed at that point starts to burn. In using a magnifying glass in the sunlight, what we effectively do is we trap the solar energy present in the sunlight and focus it at a point to produce heat. This principle is the basis of harnessing the potential of solar energy. This solar energy is present everywhere where the sun’s rays reach. We must try to trap this energy as much as possible so that long after the sunset, we can use it to warm our homes and hearths.
We may find the sunlight very pleasant to be in. If we continue to sit in the sunlight for a long time, we find our skin becoming hot because it absorbs the heat present in the sunshine. But since the sunshine is percolating every nook and corner where the sun’s rays reach, the heat is not felt easily. The heat gets dissipated with the atmosphere. That is why it is difficult to capture the heat in the sunlight to such a point that it can be put to use to provide heat and energy to its full potential.
To trap the latent heat in the sunlight sufficiently so that we can use it to warm our homes after the sunset, we need to use the principle in the magnifying glass, that is, we need something that will garner the heat of the sunshine and concentrate it upon a particular area. That something is a solar collector, just like a magnifying glass. It captures the sunlight falling upon it and allows the sunlight to pass through and into the area beyond it. The articles in the space beyond the solar collector absorb and capture the solar heat. The solar collector provides only a one way passage to the heat and traps it so that it cannot get back to its source. One example of solar collector is glass which allows passage of the sunrays through the glass and into container beyond it. The Sun’s rays making up the sunshine travel in straight lines so that once they are through the solar collector, they are not able to turn back themselves. Thus the solar collector effectively traps the heat energy present in the sun’s rays and the area under the glass becomes warm or hot. The articles in the area under the glass absorb the heat and prevent it from escaping back. Thus the area under the glass is heated by solar power and it remains hot for a long time since the heat is trapped there.
The greenhouses make use of this great natural solar collector, that is, glass. The glass walls trap the heat in the sunshine and the greenhouse remains warm long after the sunset or when the sunshine does not reach the greenhouse because of cloudy atmosphere. Thus the warm atmosphere inside the greenhouse is maintained even during cold seasons.

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]]> http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-explained-a-simple-guide/feed/ 0 How is Solar Energy Used http://truthaboutsolarpower.com/blog/solar-energy/how-is-solar-energy-used/ http://truthaboutsolarpower.com/blog/solar-energy/how-is-solar-energy-used/#comments Sun, 17 Jan 2010 23:06:03 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/how-is-solar-energy-used/ We simply need to think back of the last time we lost power when we had to light some candles and wash ourselves with cold water. Luckily for us the power came back but what if it didn’t come back. We have to stop thinking that everything lasts forever because nothing does and the sooner we realize that, the better we will be, it is time to start thinking outside the box, and look up high above into the sky and realize that solar energy is here for us to use. It shines 24 hours a day, 7 days a week non stop around the world, it is here now and for a long time to come.

The sun is a very intense ball of fire or gas way up in the atmosphere. We only see it when we are awake but on the other side of the globe others also get the daytime when we get the night. Did you know that some people use a great deal of the heat generated from the sun in order to heat their homes, power electricity and provide hot water to their love ones and businesses. Thinking about all the machinery that runs with electricity, it is hard to imagine running it by rerouting the sun to the machinery. Scientists have started to make this possible by utilizing this free energy to power everything from, home heaters to heating water, from powering home appliances to electronic devices and even the space shuttle is using solar power.

This solar power energy can be redirected and concentrated using special boxes (solar panels) that attract the light during the day to heat water and homes throughout the night. Solar power is becoming very common, extremely important and provides a natural way to heat, collect electricity and heat water with just a little more effort. We live in changing times; in the future we may have no other choice but to look at natural resources in order to have these necessities and conveniences. To have a home solar power system installed or have one made yourself can save you a huge amount of money and the investment you made to modify you house to implement a solar system can pay itself off many times in a short period of time. Solar power is important now and in the future.

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]]> http://truthaboutsolarpower.com/blog/solar-energy/how-is-solar-energy-used/feed/ 0 How Solar Energy Works http://truthaboutsolarpower.com/blog/solar-energy/how-solar-energy-works/ http://truthaboutsolarpower.com/blog/solar-energy/how-solar-energy-works/#comments Sat, 16 Jan 2010 17:40:33 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/how-solar-energy-works/ The Sun is the source of life on our planet. It?s not only the source of light, but also the source of heat and other forms of energy. Even the energy stored in our food, fossil-fuel; all these are actually results of previous ?insolation? (sunshine). Probably that?s why old civilizations used to worship the sun as a god. It?s amazing to know that one hour of solar energy, if fully harnessed, can fulfil a whole year of energy need on earth!

How Does Solar Energy Work?

The sunlight reaches the earth?s surface in form of:

1. light or the visible radiation (frequencies that produce the spectra ?violet to red? while passing through a prism)

2. heat or invisible infrared radiation (frequencies below [=infra] red spectrum)

3. high-frequency ultra-violet radiation (frequencies beyond [=ultra] violet spectrum). The use of the light needs no elaboration. The heat is the energy we use to dry clothes, run the water-cycle (evaporation-cloud-rain). The UV is that causes the tan on our skin or causes skin-cancer.

But the light form is used in another way now-a-days, a way that has opened towards the new horizon of renewable energy; the solar-electricity. This process of converting the light into electricity is called PV or photovoltaic.

How Do Solar Cells or Solar Panels Work?

Solar Cells convert light directly into electricity. On a sunny day, the electricity converted from an area of 1 square-meter can feed a 100W light-bulb. Solar cells, or photovoltaic cells are generally silicon-based (silicon is an element extracted from sand) pieces that absorb the sunlight.

One end of the Silicon (Si) piece is doped with Boron (B) which is considered as the positive (+ve) end and the other end is doped with Phosphorus (P), which is the negative (-ve) end. When light falls onto the solar cell, electrons are displaced from the atoms of Silicon. However, the electrons tend to move towards Phosphorus which attracts electrons (negative charges). Thereby, there is a surplus of electrons in ?ve end and a shortage of electrons in the +ve end.

If a conducting line is formed up outside the cell between the +ve and ?ve ends, an electrical flow is generated and a working circuit is constructed. This electricity is a direct current or DC (unidirectional flow) like a battery. But DC is not suitable for common use, so DC is converted through an ?inverter? to alternating current or AC. This AC can be transformed into required ?voltage? through a ?transformer?.

This process of converting sunlight into electricity is called the photovoltaic process. A combination of PV cells makes a PV module, a set of PV modules form a PV panel or commonly called solar panel. Even greater powers can be achieved through a collection of PV panels put together in an ?Array?.

The Chain of Harnessing Solar Energy

Summarising all these, here is the chain of Solar Energy:

a. The Sun radiates light

b. The PV cells convert solar radiation into electricity

d. This electricity is like battery-generated electricity (unidirectional flow of current) or the DC.

e. The inverter converts direct current (DC) into alternating current (AC).

f. The transformer guarantees that the voltage of the electricity coming from the inverter is the one we require.

g. The distribution scheme receives electricity produced by the system and combines it with other electric sources.

h. There could be electric meters to measure the amount of electricity produced.

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]]> http://truthaboutsolarpower.com/blog/solar-energy/how-solar-energy-works/feed/ 0 Is A Residential Solar Energy System And Wind Power Generators In Tandem A Good Idea? http://truthaboutsolarpower.com/blog/solar-energy/is-a-residential-solar-energy-system-and-wind-power-generators-in-tandem-a-good-idea/ http://truthaboutsolarpower.com/blog/solar-energy/is-a-residential-solar-energy-system-and-wind-power-generators-in-tandem-a-good-idea/#comments Fri, 15 Jan 2010 18:48:43 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/is-a-residential-solar-energy-system-and-wind-power-generators-in-tandem-a-good-idea/ Residential solar energy systems and wind power generators are becoming more popular. More and more people are finding the benefits of generating there own electricity to power there home. There are some situations where you may need both a residential solar energy system and wind power generators. Here we will take a look.
With Solar energy, it can work out good to have in your home, but only if you get a moderate amount of sunlight. This is a similar problem to wind power. Wind power generators are only effective, with a moderate amount of wind.
If you have a lot of sunlight, then a residential solar energy system will be of great benefit, and you will not need to look for alternative sources of energy. Likewise a lot of wind could mean that sticking with a wind power generator may be your best option.
If you find you live in the west of the US, you may have great sunshine, and a residential solar energy system maybe all you need, but what about if you are stuck in a part of the world where blistering sunshine is not a common thing?
In the UK for example, there are summer months with days that are very sunny. Residential solar energy systems are similar to a thermometer. As sunlight is more, and hotter, it means you get more power, less sunlight means less power.
In either case, a deficit will mean you just don’t have power. An option that many homes that switch to wind or solar power decide on is to have a connection to the electric company. This makes a great option, as you can get to have constant electric, and any excess, you maybe able to sell back to the electric company.
If you are in an area that isn’t very sunny or very overcast with clouds, then you may need a wind power generator that can supplement when there is no sun, but a lot of wind. This poses a few extra problems or benefits, however you see it.
Investing in a residential solar energy system is going to be a costly affair. Though the energy you get will be for many years, even decades, it still could mean that you still have to pay for electric, especially if you don’t have the sunshine.
The problem with investing in residential solar energy systems and a wind generator is that you likely have to invest twice the amount of money. This can mean a longer time to make a return on investment.
It is always advisable to seek advice from the company you plan to buy the energy system from, as they can give you an indication of whether you need a residential solar energy system, wind power generator or both.
The benefit with both is that with the excess energy you can, in most cases, sell it back to the electric company. It can be a great feeling, having the electric company send you a paycheck a few times in the year.

Looking for the pros and cons of solar energy? Are you looking for residential solar energy systems for your home or solar panles? Visit the links for more details or visit – USA Today Articles
]]> http://truthaboutsolarpower.com/blog/solar-energy/is-a-residential-solar-energy-system-and-wind-power-generators-in-tandem-a-good-idea/feed/ 0 Solar Energy: Technical Facts http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-technical-facts/ http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-technical-facts/#comments Wed, 13 Jan 2010 17:45:45 +0000 admin http://truthaboutsolarpower.com/blog/solar-energy/solar-energy-technical-facts/ Following are some of the basic technical facts about solar energy.

Environmental Facts:

There is no shortage of energy on Earth and no need to use damaging fossil fuels. It is simply a matter of advancing and utilizing alternative energy technologies for a cleaner future.

Anna supports and promotes the use of clean energy solutions by educating others and helping them find alternative energy solutions for their needs. Find out more at her website on Solar Power and Alternative Energy.
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