Renewable Energy: Advantages and Disadvantages

If you haven’t heard all the talk about Renewable Energy, you must have been living in a cave for the last 10 years. Even so, if you were in a cave I am sure someone would have told you about solar energy, wind power or hydro power. These are all examples of renewable energy, that are being used in to days world and with the concern of Global Warming, at no other time in our history has this concept been more important. Click for earth 4 energy dvd,

Solar Energy

Every day from sunrise to sunset the sun produces an unimaginable amount of energy, and all you have to do is tap into that energy. You need a solar colletor, which helps you to heat the water in your home or use a Solar cell to convert the sun’s energy to electricity, and if you have ever used a solar calculator I am sure you understand the idea.

This has moved on from the calculator to cells helping to providing power to homes, cars, street lamps, cell phones the list is endless. You will find solar cells helping provide power from the Artic to the equator.

Wind Energy

For thousands of years man has harnessed the power of the wind, it used to be the only way a ship could get across the oceans. You will have also seen windmills that harnessed to power of the wind to grind grains or to pump water. Nowadays we are harnessing the power of the wind to create a clean source of electricity in all parts of the world.

Wind Farms have been appearing all over the countryside, and can produce enough electricity to power thousands of homes. They are surprisingly simple in how they work, the blades of the windmill and connected to an electrical generator through the use of gears and shafts, that mean when the blades turn electricity is created by the generator.

where you can learn about solar power and other forms of alternative energy you can use around your home. You can also learn how you can do your bit to stop Global Warmings- natural energy sources and book

Technorati Tags:: Energy development, Renewable Energy

Solar Power: Important Principles

How Solar Energy is Created

Solar energy consists of the light and heat emitted by the sun, in the form of electromagnetic radiation.

With today’s technology, we are able to capture this radiation and turn it into usable forms of solar energy – such as heating or electricity.

Although one could go into technical dissertations on the subject of electromagnetic radiation, how it is converted into solar energy, and the exact qualities of its electromagnetic rays, this is not something the average person needs or wants to know.

But in order to benefit the most from the use of solar power, there are a few facts you should know. Knowing these facts can assist you to make a sound decisions, when looking at the use of solar power as a clean energy source for your home, RV, or whatever the case may be.

Available Solar Resource

The technical feasibility and economical viability of using solar energy depends on the amount of available sunlight (solar radiation) in the area where you intend to place solar heaters or solar panels.

This is sometimes referred to as the available solar resource.

Every part of Earth is provided with sunlight during at least one part of the year. (I say “part of the year” as the north and south polar caps are each in total darkness for a few months of the year.) The amount of sunlight available is one factor to take into account when considering using solar energy.

There are, however, a few other factors which need to be looked at when determining the viability of solar energy in any given location. These are as follows:

* Geographic location

* Time of day

* Season

* Local landscape

* Local weather

Because the Earth is round, the sun hits its surface at different angles, at different locations on the globe. This ranges from 0? (just above the horizon – a good example of this is the north pole during the winter) to 90? (directly overhead, at and near the equator).

When the sun’s rays are vertical (directly overhead), the Earth’s surface gets a maximum of solar energy. The more slanted the sun’s rays are, the longer they have to travel through Earth’s atmosphere before reaching the surface (becoming more scattered and diffuse as they go along).

The more scattered and diffuse the sun rays are, the less concentrated the solar energy is. Because of the fact that the Earth is round, the polar regions never get direct sunlight, and, during their respective winter months, they receive no sun at all.

The Earth travels around the sun, in an elliptical orbit. Because of its elliptical path, the northern hemisphere of the Earth is closer to the sun during one half of the year, and the southern hemisphere is closer during the other half of the year.

When one part of the Earth is closer to the sun, it receives more concentrated solar energy. This is the time of year that is referred to as “summer.”

But regardless of summer or winter, the 23.5? tilt of the Earth’s axis plays a larger role in determining the amount of sunlight striking Earth at a particular location. The tilting of the earth results in longer days in the northern hemisphere during one half the year, and longer days in the southern hemisphere during the other half of the year.

Areas such as the United States and Europe receive more solar energy between May and September – not only because days are longer, but also because the sun is almost directly overhead during this season. The sun’s rays are far more slanted during the shorter days of the winter months. Cities such as Denver, Colorado, receive nearly three times more solar energy in June than they do in December.

Diffuse and Direct Sunlight

As sunlight passes through Earth’s atmosphere, some of it is absorbed, scattered, and reflected.

The following is a general list of materials that cause the sunlight to be diffused:

* Air Molecules

* Water vapor

* Clouds

* Dust

* Pollutants

Sunlight affected in this way is referred to as diffuse solar radiation or diffuse sunlight.

Sunlight that reaches the Earth’s surface without being diffused is called direct beam solar radiation or direct sunlight.

The sum total of all diffuse and direct solar radiation in a given location is called global solar radiation. It is the total amount of sunlight hitting the Earth at any specific spot, both direct and diffuse combined.

Pollution and other atmospheric conditions (such as weather patterns) can reduce direct sunlight by 10% on clear dry days. They can reduce direct beam radiation by 100% on thick, cloudy days.

Note that the absence of direct sunlight does not imply total darkness, as some diffuse light will still get through.

Measuring Sunlight and Solar Energy

Scientists measure the amount of sunlight available in specific locations during the different times of year.

They are then able to estimate the amount of sunlight which falls on similar regions at the same latitude with similar climates and conditions.

Measurements of solar energy are normally expressed as “total radiation on a horizontal surface”, or as “total amount of radiation on a surface tracking the sun”.

In this last case, the assumption is that one is using a solar panel that automatically tracks the sun.

In other words, the solar panel would be mounted on a tracking device so that the panel would remain at right angles to the sun throughout the day.

This system is primarily used for industrial setups, when it is used at all.

Solar Energy Measurements

Radiation data (the amount of solar energy available at a given location) for solar electric (photovoltaic) systems is often represented as kilowatt-hours per square meter (kWh/m2). Direct estimates of solar energy may be expressed as watts per square meter (W/m2).

Radiation data for solar water heating and space heating systems is usually represented in British thermal units per square foot (Btu/ft2).

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Anna supports of clean living and the use of renewable energy in order to combat pollution and Global Warming, as well as the humanitarian and economic consequences of dependency on fossil fuels.

Visit Anna’s blogs, Solar Power and Alternative Energy, to find more information on solar power and alternative energy.

You can also find a wide variety of solar power equipment, solar battery chargers, portable solar power, solar water heating, solar powered weather stations, solar fountains, solar lights, home solar panels, and more, at her Solar Power Store.

Technorati Tags:: Renewable Energy, Solar hot water

The Unknown Costs Of Using Fossil Fuel

Go back 30 years and you’ll see that the green movement was positively anti-nuclear. It seems strange that 30 years on some of the very same people are placing their hopes on nuclear power to prevent global warming. It may be that we have no choice other than to go Nuclear but we have to ask the question “why aren’t we placing more emphasis on cleaner types of energy?” Some governments (Denmark is a case in point) have already come a long way in harnessing cleaner and safer types of energy including both Solar Power Systems and Wind farms. They have had great success so you have to ask why other countries are placing their hopes on Nuclear Power?

The old problems associated with Nuclear Power have by no means gone away. It is still an intrinsically dangerous form of energy and we still have no viable solution to removing nuclear waste! What is keeping us from moving to other forms of energy?

The common argument is that the cost of switching to renewable energy is far more expensive than sticking with fossil fuels. But what of those unspoken costs staying with fossil fuels or moving over to nuclear power?

It is common knowledge that our fossil fuel resources are running out. With the demand for energy set to increase there is only one possible outcome. More price increases! On the other hand, the energy provided by the Sun, Wind and Water is free and will be there for a very long time.

Utilising cleaner forms of energy may not be cost effective at the moment but future developments will surely lead to greater efficiency. For instance, take solar technology. As semiconductor technology moves forward in leaps and bounds, solar panels are becoming ever more efficient. It wasn’t that long ago solar panels could only be used with any effectiveness in warmer climates. Today, we see them being used in many types of environment. Indeed, the science of solar technology has advanced so much people are investing in their own DIY Solar systems. If individuals think it worth their while to build and install their own solar power systems then why can’t it be done on a wider scale.

The financial considerations of sticking with current energy resources is not just limited to supply. We will have to deal with CO2 emissions or the removal of nuclear waste material, a cost that will be with us for many years. Alternative forms of energy like Hydro, solar and wind power are all clean and pollutant free. Future generations will not have to pay for what we do now. The cost of short term thinking is a high price to pay for the future of mankind. Let’s keep nuclear power at a distance. The Sun would be far enough.

Technorati Tags:: Global Warming, Renewable Energy, Solar Energy, wind power

The Renewables Obligation in the UK

Renewables Obligation

The Renewables Obligation is a Government mechanism to encourage investment in renewable energy. It is central to the United Kingdom Government’s policy to raise the amount of renewable energy generated in the UK.

The renewables obligation (RO) has been guaranteed to be available for longer recently (UK pre-budget report).

The Alistair Darling MP has stated it is a Government wish which remains in place, despite the economic difficulties, not to let the present state of the economy impact badly on spending in the sector of renewable energy projects and environmental schemes generally.

“Action to achieve environmental goals remains a high priority,” he stated in his address to Parliament. Most importantly, the pre-budget report states the RO will be extended until “at least 2037” This is said to be in order to encourage rising investment in all renewable energy technology.

So, all UK investors can now plan with confidence for the future so that over the next decade the market will continue to deliver the renewable energy schemes, and contracts let, which will enable the UK to need to their 2020 target.

This means that electricity supply companies are still going to be encouraged to source continually increasing amounts of the electricity they sell (5.5% in 2005/06 rising to 15.4% by 2015/16) from renewable supplies the largest of which will be from wind farms.

The Renewables Obligation is the Department’s main policy mechanism aimed at increasing the proportion of electricity that is generated from renewable sources throughout the UK. It is expected to make a significant contribution towards achievement of the current target of 12% contained in the Department’s Strategic Energy Framework for the proportion of electricity that is generated from indigenous renewable sources by 2012.

The Renewables Obligation has however been criticised by some as an example of a green policy that has seriously unpleasant side effects and fails to achieve its objectives. The criticism is that the RO is a system which provides the same level of financial support for all eligible renewable projects. The Department adopted this approach as an easy opt -out, they say, to ensure that the most economic renewable energy projects are developed first, while minimising Government intervention in the market. However, the instrument is too blunt and important opportunities are in danger of being missed.

Generators get the same amount of ROC support for each MWh, no matter where in the UK they are sited. However, power generated closer to the main urban areas will incur far fewer distribution losses and hence costs to the nation to use it.

Larger wind farms may require to distribute their power to consumers further away and hence use grid lines running at 132kV, 275kV and 400kV, controlled by National Grid that are designed to take power over greater distances. These are going to need extending and strengthening.

Generators based in Scotland are therefore at an advantage, due to for example, their high winds. They can produce more power from the same investment due to those higher winds but should they still get the same price for their output?

The Renewables Obligation is said by its critics also to be failing the technologies that most need help. Designed to be technology neutral, it raises the most money for the lowest cost technologies.

So, the RO is a market led measure and will remain so. The Obligation is helping the UK renewable industry to take forward those renewable technologies that are close to becoming commercially competitive, but does nothing for innovation.

View our video about the utilisation of biomass as one of the renewables Power Projects

Renewable energy policy is a primary part of climate change policy. Climate change policy should aim to deliver curbs in emissions where they are easiest to cut, and where they require the least change in our life-styles and aspirations. The government would argue that the RO does this. However, this will coast us. Sir Nick Stern’s estimate, in the Stern Report, of a cost of some 1 per cent of national income is modest, and is equivalent to foregoing half a year’s British growth in terms of recent growth achieved.

Wind Turbines is not the only form of renewables Power Projects. There are many others, for example:

1. Biomass
2. Energy recovery from water distribution systems
3. Anaerobic Digestion
4. Wave

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Technorati Tags:: Climate change, Renewable Energy, Renewables Obligation

The Next Step In Wind Energy

Wind Energy

The New Stimulus Plan For Sustainable Development Renewable Energy

In the coming year when the new U.S. administration takes control over the economy. We will see a stimulus that will include green energy steps toward wind power . Since our demand for renewable energy will continue to get stronger, eliminating carbon dioxide emissions will require adopting green energy practices. However, the cost has been prohibitively high for most of the commonly used and available methods. Generating energy from home has many possibilities, including getting a rebate or check from the power company for excess power that you’ve sold back.

One would hope that incentives given by the government will include, tax credits given to tax payers in some form of a credit on their taxes for renewable energy purchases. Some tax credits were established under the Energy Policy Act of 2005. The credits can be taken on weatherization, windows, vehicle purchases and appliances. The specifics can be found out from the IRS, local government and your energy company. The credits are available to individuals and businesses.

The Next Step In Alternative Energy Wind Energy

Some local governments and state governments already give incentives to residents that are energy efficient. To find out if you qualify for such incentives you should contact you local power company and department of energy.
Incentives are a great way to get people on board with energy efficiency. They can make someone choose an energy efficient product over one that is not. Energy efficiency incentives are something that may not be around forever, so go ahead and take advantage of them and move tward energy independence now.

Purchases of certain energy star appliances may make you eligible for rebates. These rebates are offered by partners of the energy star program. Many times your local power supplier will provide a list in addition to energy star.
Solar energy efficiency is very well the basis of the future of energy in this country. The homeowner will benefit from the incentives.

The Focus On Alternative Energy Alternative Energy

Public and private entities will benefit from the new administrations focus on climate change making the U.S. energy efficient .

Solar energy is a favored renewable and it is easily available . The new advances in solar energy are moving it quickly to the forefront of alternative energy sources. New equipment has been developed that allows for energy to be stored for use later when the sun is not out.

Several recent innovations in solar technology have brought us to the brink of affordable solar power that can be used anywhere. Flexible film solar can be built into just about anything, from awnings to bikinis. Now we will start working on affordability. New advances on how to put the flexible sheets together has recently become available. Even solar paint is on the horizon.
The next step to really getting solar everywhere as it should be it to have similar revolutionary advances in storage technology.

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Our Energy Thirsty Planet Needs Renewable Resources

Energy Thirsty Planet

The world is an energy devouring place and we need to be researching greener sources of energy to supply that demand. We also need to see cleaner modes of using the current green energy technology that are already in place. We all need to be interested about the impact that is being put on our planet and how the high cost of energy is affecting us. We have an energy thirsty planet and the energy that is wasted every day is a sad state of affairs and everyone should take a look at what they could do to be more moderate in their utilization. We should open our eyes and make ourselves more conservative about our use. There are solutions to these issues but how inclined have people been to execute these solutions at the present.

One of the more popular forms of renewable energy is wind power. The price of the power it creates is becoming really competitive with conventional methods of energy output such as coal and natural gas. Power used to be created by windmills in the past on the family farm for many years. They used to used on the farms to pump water and every farm had one back then. It’s a recognized fact these days that the states of Texas, Kansas, and North Dakota have sufficient wind to provide power for the whole U.S.

Another renewable enegy source that has gotten much press is corn. The ethanol that is formulated from corn is a clean burning energy source and crops can be grown year after year so it is inexhaustible but at what cost. The cost of corn has gone up as the result of this, which is good for the farmer but bad for the consumer. Praire grass has been shown to a far superior alternative to corn. Believe it or not it makes way more energy per acre than corn. Praire grass grows wild. You don’t have to cultivate or tend to it. It is a chemical free crop that just needs to harvested and processed.

Another renewable enegy source we see and hear more of is solar power. There are solar panels that will convert the suns energy into electricity and solar water heating systems to provide hot water. I’ve read about people who have placed solar energy systems on their homes in areas you wouldn’t think it would work, like Seattle. Even though this is a very cloudy rainy area the ROI was quite respectable.

One of the reasons I really like solar power is the fact that it allows people to become energy independent one home at a time. The control of power can be decentralized. Think about it there hasn’t been a lot of money spent on the research and development so costs remain high and the cause doesn’t advance. Corporations want to protect their profits and it almost seems they do anything to make that happen.

We all know that oil isn’t going to last forever. If we don’t start doing something about it now than when. We need to get smart about what we are doing with our energy situation and begin to implement a new energy policy. We need to look to future generations and how it is going to benefit them. Do your part in helping to make renewable energy a reality today.

You can learn more about solar chargers, wind energy , and other forms of renewable energy sources by doing more research on the Internet about the subject that interests you the most.

Technorati Tags:: Energy Thirsty Planet, ethanol, Renewable Energy, renewable resources, renewable sources of energy, Solar Energy, solar panels, Solar Power, wind energy, wind power

Interested in Renewables? Read the Solar Energy Facts

Solar Energy Facts

We hear about solar energy on an virtually daily basis.  But are we hearing real solar energy facts or is there are lot of talk filled with opinions which cannot be backed up with hard evidence.  Since this is becoming a hot political topic there are many solar energy facts out there which are not quite as substantiated as we are lead to believe.

One of the reasons why solar power is so topical is because it is a renewable energy source.  This means that, unlike energy which is dug or drilled out of the ground, it is not going to run out.

Another important solar energy fact is that it is a clean energy source. This means that it doesn’t increase levels of hazardous greenhouse gases and it does not produce any other emissions which are currently considered to be dangerous to our ecosystem.

Solar energy facts concerning its versatility are a bit vaguer.  This is due to the current problems with efficiency and storage.  If you are considering converting to solar power completely you may want a solar powered car.  This is possible, but you will probably find that you are going to have a difference in performance levels between your traditionally fuelled car and your solar powered.  So it is true that you can have a solar powered car, but there will be sacrifices.

So if you wanted to go green and have everything solar powered, would it be possible?  Well, one important solar energy fact is that manufacturers are cashing in on the idea and they are pricing solar energy powered products much higher than traditionally powered similar products.

So is solar energy cheaper to run?  This is a maze of information and extracting the solar energy facts of this one is not easy.  Once solar energy systems are installed they are cheaper to run.The sun will beam for free and every time she shows her face you will be gaining power to either use, store or sell.  In some areas you can sell your excess solar power back to your local energy supplier.  This all sounds very good, but there are a lot of upfront costs which you will have to recoup before you are making a profit, so don’t get too excited too quickly.  The only way to truly establish if you could run solar powered without breaking the bank is to get one of the solar powered companies to come and do a home assessment.  During this they will advise you of the work which would be required to convert your home to solar power.  This should include the cost parts and the amount of energy you are likely to be able to produce.  Most companies will be able to review your current energy use and be able to tell you if you will be short and need to top up with traditional sources of energy or if you will be selling back to the local supplier.

One solar energy fact you can be sure of is that solar energy is here to stay.  We just don’t know what percentage of our energy usage will be solar and how quickly this change over will happen.

Technorati Tags:: Renewable Energy, solar energy facts, World energy resources and consumption

Different Types of Concentrating Solar Power

Concentrating Solar Power

There are two main types of solar power generation methods used to produce electricity on a commercial scale. Photovoltaic panels, which are the large collections of the systems that you see in small scale on house roofs. Using the heat of the sun as thermal solar power are concentrating solar power (CSP) plants.

We will take a look at the way in which concentrating solar power plants create electricity. CSP plants are capable of producing electricity at a higher maximum capacity than a photovoltaic facility of the same size. They will play an increasingly important role in the move away from fossil-fuel sourced energy to that of renewable energy.

There are four main types of concentrating solar power systems: parabolic troughs, fresnel reflectors, dish / engine systems and central receiver systems. The technology involved with each is proven and either has been or still is in operation around the world with more developments in solar energy in progress to increase global capacity.

Trough systems work by making use of mirrored troughs that are used to focus the sun’s energy onto a receiver tube that is filled with fluid. The heat generated from this process heats the fluid to high levels so that super-charged steam is created. A conventional steam generator is then used to produce electricity.

A trough-based CSP plant typically consists of rows of mirrored troughs placed parallel to each other along a north-south axis in what is known as a collector field. Optimum heat is focused on the receiver tubes thanks to the pivoting nature of the parabolic troughs which track the sun’s movement across the sky. Electricity continues to get generated when the it’s cloudy or after the sun has set thanks to thermal storage. Technological advancements are continuing to prolong this production period in a bid to move to continuous solar electricity production.

One of the largest developments to use the parabolic trough design is the Andasol project in Spain. The surface area of the mirrors used to form the energy collection field of Andasol 3 alone is around 500,000m2.

Fresnel reflectors provide a more concentrated focus of solar energy onto centrally placed receivers. Costs are reduced using this method because the rows are positioned more closely together, there are fewer moving parts and less receivers are required. The receiver is stationary and it is shared by multiple mirrors.

An example of a recently commissioned CSP plant using reflector technology is the Kimberlina CSP plant in California developed by Ausra. This power plant is relatively small at only 5MW capacity, but it paves the way for future large-scale developments.

Dish / engine systems are stand-alone units that contain dish-shaped parabolic mirrors that concentrate the sun’s energy onto a receiver mounted above the dish. From there the energy is converted into mechanical power and electricity is generated similar to the way a mechanical engine runs. Each dish / engine unit has a capacity of around 25kW of solar power and it tracks the sun to ensure optimum power.

An example of the dish / engine technology is the Stirling Energy Systems dish called the Suncatcher that will be used in fields of thousands to form a power facility capable of generating over 500MW of electricity.

Central receiver systems, known colloquially as power towers, is another way to produce concentrated solar power. Looking as though they’re honoring a higher deity, thousands of mirrors called heliostats cluster around a receiver that sits on top of a tall tower. Molten salt is heated as it passes through the receiver and this then makes steam which operates a conventional steam generator. The molten salt can be stored for great lengths of time which means that this type of solar energy generates electricity continuously around the clock.

An example of a central receiver system in development is the Solar Tres power plant being built in Spain. The Solar Tres power plant will be a 15MW facility and it follows on from the successful demonstration power plant known as Solar Two which was located in the Mojave Desert.

One of the crippling problems with solar energy has been the high cost per watt of electricity, but technological advancements are bringing those costs down. Already, concentrating solar power plants hold a huge advantage over the traditional fossil fuelled counterparts in the lower impact to the environment. In fact, one of the only impacts that concentrating solar power plants have on the environment is land use.

Renewable energy continues to grow and with continued support it will eventually become one of the main sources of electricity around the world. Concentrating solar power has proven to be a renewable energy source with still more untapped potential.

More on concentrating solar power:

Technorati Tags:: concentrating solar power, csp, environment, Renewable Energy, Solar Energy, Solar Power

What is Solar Power All About?

What is Solar Power?

Solar Power is a form of renewable energy as it utilizes the radiant energy coming from the sun. This is done by converting sunlight into electricity using solar cells.

Solar cells or photovoltaics were invented in the 1880’s by Charles Fritts. Although it did not convert a lot of sunlight into electricity at the time, this started a revolution that continued on to the 20th century. The greatest example is perhaps the Vanguard 1 which was a satellite fitted with solar cells that enabled it to transmit back to earth after its chemical battery was exhausted.

It success prompted NASA and its Russian counterpart to the same with other satellites including Telstar which continues to serve as the backbone of the telecommunications structure today.

The most significant event that stimulated the demand for solar energy was the 1973 oil crisis. Early on, power companies would charge the consumer a hundred dollars per watt. In the 1980’s, it became only $7 per watt. Unfortunately, the lack of government funding did not sustain its growth so the growth of solar energy was only 15% annually from 1984 to 1996. But you can still on your home by checking out house insurance quotes.

There have been a decline in the demand for solar energy in the US but this increased in Japan and Germany. From 31.2 megawatts of power in 1994, this increased to 318 megawatts in 1999 and world wide production growth increased by 30% towards the end of the 20th century.

Next to these two countries, Spain is the third largest user of solar energy followed by France, Italy and South Korea.

There are three basic approaches to get the most out of solar energy. It is namely passive, active and solar photovoltaic systems.

1. In passive, it has to do a lot with the building design. This will enable the building to avoid heat loss so people inside will feel a great degree of comfort with the help of controlled ventilation and day lighting. Homes that apply this will greatly reduce their heating requirements by as much as 80% with minimal cost.

2. Active solar heating is used to convert sunlight into heat which provides space or water heating. Used extensively in Europe, getting the right size will cover 50% to 60% of your hot water heating requirements.

3. Lastly is photovoltaic which converts solar radiation into electricity. This is done by installing solar cells in the ground and the greater the intensity of the light, the greater the flow of electricity. These are available in different sizes and some are installed in consumer devices like calculators and watches.

Some vehicles are now powered using solar energy. Cars although not yet produced commercially compete in the World Solar Challenge which invites competitors from around the world to compete in this annual event in Australia. So to save on your car the best you can do is look at car insurance quotes least expensive. There are also unmanned aerial vehicles and balloons. To date, solar energy has only been successful in passenger boats.

Many of us take the sun for granted and if we are really serious about preserving the environment and reducing our demand for oil, solar energy is just one of the options we have on the table. We have to lobby and convince our government leaders to do more because it is the cheapest means of providing our home with electricity compared to rechargeable batteries, kerosene or candles.

Click Here To Learn How To Install Your Own Solar Energy System

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