Sunlight Main Source for Energy

SUNLIGHT

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One of the consistent problems with solar platforms has been the inefficient conversion of sunlight to electricity. New technology and strategies are dealing with this issue.

Concentrate, Concentrate

 
Traditional power generating plants work by using a fuel, often fossil, to heat a liquid until it expands or turns into a gas. The pressure or gas than rotates a turbine, which cranks up a generator and produces the massive amounts of electricity we all take for granted. This is a time tested method and is used in coal, nuclear, hydropower and most major power sources. The concept is now being transferred to solar platforms in an effort to get more bang for the buck out of these clean energy platforms.
 
The problem with solar is sunlight is converted to energy at a rate of 10 to 15 percent efficiency, a truly uninspiring number. Put in sports terms, the best batter in baseball would have a batting average of 150, a quarterback would complete 1.5 of his attempted throws and Michael Jordan would have missed 9 out of every 10 dunks. The numbers simply aren’t pretty.
 
The problem with solar power is the base construct of solar cells. Various forms of silicon are used to convert sunlight into energy. The material is simply inefficient and improvements are slow and incremental. The situation is similar to trying to turn a moped into a high performance racing bike. You don’t have much to work with. Given the limitations of silicon, solar producers are trying new strategies.
 
One of the major new strategies is to use the sun as a direct heating component to produce power. Instead of trying to directly convert the sunlight with silicon wafers, producers are trying to use reflective panels to focus it onto a specific spot. This spot then contains a pipe or pool of liquid. The concentrated focus of the sun heats the liquid up and the traditional turbine to generator to electricity strategy is undertaken. If you’ve ever sat in a car in traffic on a summer day without air conditioning, you’ll understand the concept.
 
Generating energy from the sun on a large scale has always been a bit of a head scratcher. Early returns on the concentrated energy strategy, however, have been extremely positive. Major fields are being used in Germany and the future appears…bright.

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What Is Solar Power with Answers

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        Basically, solar power is energy that is actually harnessed from the sun. Although the sun is millions of miles away from earth, if we had the ability to harness all the energy coming from the sun, there is more than enough power there to provide all the energy we need for the entire earth. In fact, there is enough energy to provide plenty of energy for 10,000 earths. While you can use solar power for a variety of appliances and other items, you have to realize that this is different than using this power to produce heat.

        There are two different principles that are used with solar power. If you want to produce hot air or hot fluids, then solar thermal principles are used. However, if you want to produce electricity, photovoltaic principles are used instead. If you want to produce solar power, there are four components that are needed, including a battery, a charge controller, a solar panel, and an inverter.

        It is the solar panels that actually get the radiation from the sun and use it to charge up the battery. Then, the charge regulator actually makes sure that the battery charges as it should. Of course, probably the most important pieces of equipment are going to be the solar panels and usually they output energy in watts. These panels can be wired in a variety of ways, although usually parallel or series wiring is done to either increase the amperage or the voltage.

        So, are there benefits to using solar power? Yes! There are a variety of amazing benefits to using solar power. In fact, many people all over the world are already using this type of energy to supply their electricity. Some of the benefits are as follows:

•  Creation of new hi-tech jobs
•  Protection of the environment
•  Solar power is abundant, free and renewable
•  Fuel supply is diverse
•  Rapid and cheap deployment

        As long as the sun is hanging there in the sky, we will be able to have the energy that solar power produces. In fact, there is so much energy there, more than 10,000 times the amount of energy we need is available. You should learn as much as possible about solar power so that you will know about the great benefits offered and how your life will change for the better if you decide to go with solar power instead of using other energy sources.

CONCLUSION:

        Whether you have a business or a home, you’ll find that solar power can offer many advantages for both. Solar power is one of several alternative fuel energy sources that is cheap and renewable. From a business perspective this can add to the bottom line tremendously. From the home perspective using this can cut down on expenses. Since solar power is friendly to the environment, you will not have to worry about toxins or pollutants from this type of energy and you won’t have to worry about the issue of global warming either.   atj
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Bright Hopes For The Future Of Solar Energy

Research is shedding new light on an unexpected source of energy for heating homes and generating electricity-the sun.

The sun-directly or indirectly-is the primary source for most forms of energy found on Earth. Solar energy is clean, abundant and renewable.

Though we think of solar power as a new discovery, ancient civilizations found innovative ways to use solar energy. Among them, the Greeks, Romans and Chinese all developed ways to use solar warmth for their homes, including using southern exposures to maximize solar heating and making use of solar lighting.

Now, thanks to innovative technologies, it's possible to capture this energy, concentrate it, store it and convert it into electricity.

Sunlight is converted into electricity using solar cells. Solar cells are also called photovoltaic cells, or "PV cells" for short. PV cells were first developed in the 1950s for use in American space satellites. Today, they are used for power needs ranging from telecommunications to rural electrification. PV cells can be found on items we use daily, such as calculators, flashlights, radios, landscape lighting and children's toys.

Portable PV units are also available for emergency and disaster use, such as keeping cell phones and small appliances charged when the user is away from the grid or during blackouts.

Consumers can harness the power of the sun for themselves more easily than ever. Solar panels you see on buildings and homes have been available on the market for decades. New systems-which incorporate solar into roofing shingles-are now aesthetically pleasing, efficient and durable.

2006 ushers in new tax credits for solar energy technologies and consumers may also be eligible for state rebates.

For more information, consult with a tax professional, contact the Internal Revenue Service at www.irs.gov, or check out www.doe.gov for the latest in tax credit information.

Sunlight isn't only used to generate electricity. It is also used to heat water, which can be used to warm homes and businesses. Solar-powered radiant heating systems run some industrial processes and drive turbines to generate electricity. Many solar thermal technologies have been used in homes for decades and can last more than 20 years.

Experts believe that solar energy technologies can benefit this nation in many ways. They have the potential to help diversify this country's energy supply, reduce the dependence on imported fuels, improve air quality, offset greenhouse gas emissions and stimulate the economy by helping to create jobs in the manufacturing and installation of solar energy systems.

History Concept and Formation of Solar Panels

A solar panel is basically a device that enables the collection of and conversion of solar energy into electrical energy or even heat. 

• The Concept of Solar Panels

Solar panels are also known as photovoltaic panels and the atoms that are present in these panels are excited by the action of the sun's energy. These atoms are present in a silicon layer that lies between two panels known as protector panels.

A formation of electric current takes place as a result of the action of the electrons from the aforementioned, excited atoms, and these are then used by a myriad of external devices. The history of solar panels dates back by hundreds of years, when their sole purpose was to heat the water for use in homes. Many-a-times specially shaped mirror is used for the concentration of light onto a tube of oil. Due to this action, there is a heating up of oil and as these heated oil travels through a vat of water, it instantly results in the boiling of this water. The steam that is a resultant of this process of boiling is used to turn a turbine for the generation of electricity.

• The History of Solar Panels

It was in the year 1839 that the photovoltaic effect was discovered by Antoine – Cesar – Becquerel, a French physicist. His experiment in this regard involved the placement of an electrolyte cell in an electrolyte solution; two metal electrodes made up the electrolyte cell.

When this device was exposed to sunlight, Becquerel found that the generation of electricity saw a marked increase. It was in 1883 that Charles Fritts coated sheets of selenium with a thin layer of gold and built the first genuine solar cell. Over a period of time many experiment were conducted and discoveries were made when it came to solar cells. Albert Einstein also published his thesis on the photoelectric effect, during this time and also won the Nobel Prize for his research.

It was space satellites that made large scale use of solar electrical energy for the first time. By 1980, the United States of America, produced a solar cell which provided an efficiency of nearly twenty percent, this efficiency was increased to around twenty four percent in the next two decades and currently there are a few companies that are manufacturing solar cells that offer efficiency levels of nearly twenty eight percent

• The Working of Solar Panels

Pure silicon forms the basic element of all solar panels as its makes for an ideal platform that aids transmission of electrons. This material is used on the plates that form a solar panel. Solar panels are also created by combining silicon panels with other elements, with negative or positive charges.

The Silicon atoms are exposed to the bombardment of photons when negative plates of solar cells are faced towards the sunlight. Once all free electrons are drawn away from the plates, enough electricity is generated to power various electronic appliances that do not require too much electricity to power them.

• Features and Types of Solar Panels

Basically there are three types of solar panels, namely mono-crystalline solar panels, polycrystalline solar panels, and amorphous solar panels. The life expectancy of solar panels depends on the type of solar panels selected by you; generally it’s around twenty years or so.

        Solar panels do not require sustained maintenance for their upkeep although; if lead acid batteries are used then they must be checked every six months and topped up with distilled water if required. If you are looking for a solar panel for your needs and do not know what size to go for, then the best way would be to calculate your average consumption of electricity on a daily basis. This would give you a fair idea of what kind of solar panel to go for. In the long run, solar panels will reduce your electricity bill by a long way, and hence the option of using solar energy must be explored in a positive manner.   atj

The Bright Future Of Solar Energy

The Future of Solar PV (Photovoltaic) Energy www.solarenergy4home.net
1. The Problem
2. The Solution
3. The Results
4. The Benefits
5. An Investment in the Future


 1. The Problem:

Traditional sources of electrical power generation are running out as production will peak in the next decade but demand will continue to rise. Energy prices will continue to rise at a higher rate as well as the number of outages during peak hours.  There is the obvious problem of the pollution we are causing to our environment.

From my perspective, the world's energy needs vary greatly; there is no clear single solution to the problem of supplying the world's energy.

All forms of energy production have issues associated with them, i. e. -

1. Coal - Pollution/Strip Mining
2. Natural Gas - Cost and Lack of Infrastructure
3. Hydro - Limited Availability/Environmental Concerns
4. Wind - Limited Site and Resource Availability
5. Solar PV - Higher Cost
6. Nuclear – Waste disposal

 2. The Solution:

Solar PV (Photovoltaic) systems effectively deliver three to five hours of peak power per day at roughly 10 Watts per square foot. Not one square inch of new land would be required to site PV. Theoretically, there are adequate residential, commercial, Government rooftops, and parking structures in California to power a substantial percentage of our State's electrical needs from solar.

In Southern California, solar produces a net energy gain in approximately three years. This means that within three years, PV systems begin producing more energy than the energy spent in producing the system and its raw materials. Best of all, the energy produced cost zero emissions.
At today's prices, a typical solar system costs approximately $8.00/watt, installed and has an operating life in excess of 25 years. For all intents and purposes, maintenance and operating costs are minimal.  Now there are systems available for rent.  Companies such as Citizenre at www.jointhesolution.com/rethink-solar allow you to create solar power of a unit that is installed, maintained and monitored by them.  You merely pay the monthly rental fee for you clean electricity which is the same price as you pay the electric company for you electricity.  Also they allow you to lock in a rate now for up to 25 years so you are paying the same price throughout the entire contract.
  3. The Results:

Solar energy increases the diversity of power and adds stability to a fossil fuel favored energy structure, while reducing greenhouse gas emissions.
  4. The Benefits:
-- Solar can be quickly deployed at the point of use, reducing the need for additional transmission and distribution infrastructure, and cost thereof.

-- Solar operates most efficiently at mid day, when grid demand is at its peak. By decreasing the strain during peak hours, the longevity of existing power plants and infrastructure is extended, lowering further the cost of energy production.

-- By deploying solar over time the cumulative effect of the installed base is impressive. Given its 25-year life, within 10 to 20 years, a respectable portion of California's energy could be supplied by solar.

-- Once installed, the cost is fixed. In comparison to traditional sources of energy, the fuel cost is nonexistent, and operational costs are limited. A solar system's cost is amortized over its life, there are no rate hikes due to fuel or operating cost increases.
 5. An Investment in the Future:

There are some negatives. Presently, solar costs more than traditional energy generation. Its efficient use is limited to daylight hours unless storage is employed. Admittedly, the solar industry today is not large enough to address all of our needs. The solar industry does not have the financial influence to compete with existing utilities, which typically oppose PV, within political circles. (Industry revenues globally represent only 3.0B/year). Globally, the industry has experienced an annual growth rate in excess of 18% in over a decade. This rate of growth is equivalent to that of semiconductor, telecommunications and computer industries.

Clearly, there is no easy solution to California's energy problem. No doubt, a variety of technologies and tools are needed to ensure California's energy independence and security.
  The Solar Industry Needs Your Support
For those interested in promoting a clean, safe and environmentally friendly source of energy, I urge you to write your representatives in the State and Federal Government. Make it clear you vote for representatives who support current legislation aimed at advancing the deployment of solar energy, such as the net metering law which allows the solar producer to feed surplus power onto the grid, causing the meter to spin backward, lowering the electric bill. Tax credits and deployment subsidies provide the revenues necessary to support research and development of more efficient solar systems.

Remember, in the 1970's the State of California enacted emission standards that surpassed the rest of the nation. The argument against these standards was the cost of such improvements. Almost 30 years later, the impact is in the air and reflected in the increased fuel economy of the vehicles we drive.

Solar energy is part of the solution and is a key to America's long-term energy supply. After all, fossil fuels have a long history of issues with respect to stability of supply and cost.
 The Outlook of Solar Power is Bright!
1. Solar will sustain its torrid growth, as costs continue to fall. The solar market has grown at ~40% per annum in recent years, and there are many reasons to think that it will sustain, if not exceed, that clip in 2008. Solar panel prices have followed a predictable experience curve since the 1970’s, with prices dropping by 20% with each doubling of manufacturing capacity. As the silicon-dominated industry moves to thinner and higher-efficiency wafers, increases manufacturing scale, improves wafer and cell processing technologies, sees polysilicon prices return to rational levels, and migrates production to lower-cost countries –- costs will continue to drive towards parity with grid rates, and solar will become increasingly more attractive. Companies have developed creative PPA (power-purchase agreement) financing models to reduce or eliminate upfront installation costs, which will make solar more accessible for a wider range of corporate and residential customers. The election year should also see more state subsidy support for solar and a renewal of the federal tax credit, which will further bolster growth.
2. Emerging startups that benefit from the polysilicon supply shortage will face increased pressure, as the poly-Si crunch begins to ease. Solar veterans can debate the timing endlessly, but many expect additional poly-Si supply to come online by late 2008. Startups that tout silicon-independent solar solutions, like concentrators and thin film (CIGS, a-Si, CdTe, etc.), will face pressure to come to market more quickly, as their cost/supply advantages erode with greater availability of poly-Si and a retreat from spot-pricing. E.g., none of the CIGS thin-film startups, which have collectively received hundreds of millions in investment in recent years, managed to reach mass commercialization this past year as many had projected. They will continue to be under pressure to reach market before the window of opportunity closes.
3. Entrepreneurs will increasingly look beyond cell and module production. As the technology-heavy areas of cell and module production get crowded, more and more entrepreneurs look to startup opportunities in the downstream balance-of-systems part of the value chain. This area has seen less attention to date, yet makes up ~50% of the total installed cost. Novel packaging techniques, distributed inverter / MPP tracking / power management technologies, systems monitoring solutions, streamlining of the installation process, and creative solar financing models — entrepreneurs increasingly recognize the ripe opportunity in this part of the solar business, and 2008 should see heightened startup activity in this area.
4. China and India will begin to emerge as strong domestic markets for solar. With a 500 MW coal-fired plant going up in China every week, the growth of greenhouse gas emissions has reached dizzying levels. China already “boasts” 16 of the 20 most polluted cities in the world, with hundreds of thousands a year dying prematurely from such pollution. Many experts expect that the government will spend tens of billions of dollars in the next 5-10 years –- a significant portion going to solar -– to reach the mandate of 15% from renewables by 2020. In India, where the energy shortfall has reached 15% and domestic coal reserves will run out in ~50 years, the government is actively pursuing incentive policies and feed-in tariffs to help drive the use of solar and other renewables. 2008 should see further policy refinement in both countries, which will spur increased domestic adoption of solar.

 Few people doubt solar energy's potential, but many wonder when it will be reached. "In the long term, solar may well play an important role," Karg says. "I personally expect a contribution of 10 to 20% of the global electricity production, mainly in the form of grid-connected systems." However, he does not foresee that happening within the next 20 years.
Nevada Solar One
The sun sits high over the Nevada desert in the Eldorado Valley, gleaming off the upside down rows of mirrored parabolic trough collectors at the Nevada Solar One power plant.
At 64 megawatts (MW) of generation capacity, Nevada Solar One is the largest CSP plant to be built in 15 years. While the plant won't come online until April, its construction marks the revival of an industry that has seen almost no market growth in over a decade.

The plant was developed by Acciona Energy and Solargenix Energy -- two companies that have worked hard behind the scenes to get the CSP industry up and running again.

The plant uses parabolic trough collectors to generate electricity. The mirrored troughs face the sky and direct sunlight to a large metal and glass receiver in the middle of the trough that holds circulating oil. The oil travels to heat exchangers, which heat water and create steam to run a turbine. Parabolic troughs are one of three commercialized CSP technologies.

Further down the row of parabolic troughs, Plant Manager Bob Cable admires the impressive devices before him.

"I've been working with this technology for the last decade," Cable says. "I've seen some impressive gains in technological advancement, and now we're seeing more broad acceptance of the technology as the market becomes more attractive."

Indeed, after roughly a decade of little growth for the industry, CSP is coming back strong. And it's not just parabolic trough collectors that are experiencing a boom. Power towers, which use heliostats to focus solar energy on a central receiver to produce steam, and dish systems, which use reflectors to power a generator at the dish's focus point, are making great strides in technological capabilities, lower costs and market acceptance.

But according to Thomas Rueckert, Program Manager for CSP Management at the U.S. Department of Energy, parabolic troughs are the most advanced.

"Because of the track record [the parabolic trough industry] had in southern California with the 354 megawatts (MW) operating -- and actually improving in performance -- I think you're seeing the financial institutions more willing to embrace trough technology because it's proven and the risks are less," said Rueckert.

Rueckert was referring to the 354 MW of parabolic trough collectors installed in California's Mojave Desert between 1984 and 1990. Those plants are still operating today, currently producing energy at around $0.12-$0.14/ per kilowatt-hour (kWh) and proving the technology can provide clean, reliable energy to the grid.

The Nevada Solar One plant will produce electricity at around $0.15-$0.17/kWh. While those costs are double what area residents pay for electricity, Nevada Solar One will sell energy to two utilities through a power purchase agreement (PPA). The PPA will ensure a fixed cost for the electricity over a long period, making the solar power economical down the line.

Now that global investment in CSP is increasing, technology costs are decreasing and renewable portfolio standards (RPS) in the U.S. are requiring more solar generation, project costs for all CSP technologies should come down significantly in the coming years, said DOE's Rueckert.

"All of those things have really opened the door," he said. "And it's interesting that all three technologies are pushing forward, which was kind of unexpected."

Back at Nevada Solar One, Acciona Solar's Cohen stands before the group of reporters and members of the solar industry who have come to witness the rebirth of CSP.



"The potential is huge. It was difficult to get the attention of the financial institutions in the U.S., but right now we have their attention. We get a lot of people asking us, 'how can we develop this technology?'"

Dr. Alex Marker, Research Fellow for Schott North America, Inc., stands to the side of Cohen, nodding his head. Schott is certainly feeling the positive impact of increased CSP development. To meet the demand for its glass receivers, the company brought a new receiver manufacturing facility online in Germany last summer and is developing another facility in Spain that will come online in early 2008.

"I think [the market] is going to grow drastically," says Marker, looking over at the receivers in the troughs. "We're happy to be a part of this new development."

Now that financial institutions are noticing CSP, companies like Acciona and Solargenix will be able to tap into the vast resource potential in the Southwestern U.S.

According to figures from DOE's Solar Lab, 20,000 MW of CSP capacity could come online in the U.S. by 2020 with the proper investment and technological capabilities. Rueckert seemed optimistic that a large amount of those resources will be tapped.

"When this plant comes online next month, it's going to be a great success," he said. "The market is exploding and things are really taking off."

Indeed, a solar panel for your home, whether brand new, second hand or rented, is definitely a wise choice as it helps you in minimizing your electric bills, helps the worlds growing energy needs and is especially an environmentally healthy and helpful choice.

If you're interested in getting more info on a free solar panel installation check out www.solarenergy4home.net
   atj.

Solar Versus Oil

Solar power has long been a minor power source compared to mighty oil. As oil prices rise and conflicts occur in oil countries, perhaps the issue needs to be revisited.

Solar vs. Oil

The industrial revolution was built on the back of oil and coal. There is no denying that solar played no part whatsoever. This is particularly true since solar cells were not invented until the 1950s! That being said, it appears indisputable that we have reached or are approaching a new debate about how we deal with our insatiable thirst for power.

At first glance, the mere mention of a comparison of solar to oil as an energy source sounds laughable. It is laughable when we are talking about large scale energy production, but the tide is turning.

In a comparison of solar to oil, solar power has numerous advantages. The power source for solar, the sun, is free. Solar is available as a resource in every country, regardless of location, economic strength and so on since the sun shines everywhere. The process of converting sunlight into electricity or heating produces no greenhouse gases. Whether you believe in global warming or not, solar still is advantageous in that it doesn’t produce pollution. If you live in a big city, you know how much pollution is in the air. You can often see it!

Flipping the coin, oil has some serious advantages over solar. We have already developed technology to efficiently convert oil to power. The cost of converting industry, vehicles and such to solar or any other power source would be huge. Oil also has an advantage in that it is easier to use in a wide variety of applications, such as vehicles. One simply can’t power a vehicle with solar power, not on a practical level. Finally, it is easier to use oil to provide power to massive energy platforms, such as electricity for New York City.

For large scale energy needs, oil is still a superior choice to solar as an energy resource. The technology simply does not exist to provide solar energy solutions for vehicles, national electrical grid systems and so on. Advancements in solar technology, however, may be changing this fact in the very near future. Technologies such as quantum dots, essentially microscopic solar panels that could exist in the paint on your home, may make oil a thing of the past.

For now, oil remains the backbone upon which our energy needs sit. In the next 5, 10 or 20 years, however, new technological applications may change this. Don’t believe me? Then consider the fact oil companies such as Chevron are investing heavily in solar companies.   atj

How Does Solar Power Save The Environment

You've probably heard a lot about solar energy and how efficient it is. Moreover, over the last few years, there have been several moves to see how effectively we can use solar power in an attempt to alleviate the energy crisis that the world faces. So, how does using solar energy fit into the bigger picture of protecting our environment? The point is that even small changes in the way we do things go a long way in terms of saving our environment.

Solar energy is a renewable energy source
The sun offers us a great source of renewable energy; it's been around for over four billion years and is likely to stay around for another five billion years, during its life it will supply us with a steady stream of energy. So, apart from the obvious fact of solar energy is in abundance, people who are environmentally conscious find that using solar energy is an excellent way to help protect the environment.
But what makes solar energy an attractive option is the fact that unlike polluting fossil fuels, its availability is not governed by the oil industry, an industry that is riddled with capitalistic individuals, and influenced heavily by several geographic and political factors that invariably affect the supply.
Solar Energy on the other hand is a clean environmentally friendly energy resource and a very viable alternative to existing fossil fuels that pollute our lands, water and air, threaten our health, and contribute substantially to global warming.

Solar energy transformed into thermal (or heat) energy can be used to:
  * Cook food – Using Solar Cookers
  * Heat water – in Houses, Office Buildings, or Swimming Pools.
  * Heat closed spaces – a Greenhouse, a House or even other Buildings.

Solar energy can also be converted to electricity by using:
  * Photovoltaic devices or "solar cells" that transforms sunlight into electricity. These systems are often used in areas with no regular electricity supply. Some common devices that are sometimes powered by these solar cells include, street lights, road signs and some gadgets like watches and even calculators.
  * Solar Power Plants are electricity generating plants that use thermal energy obtained from the suns radiation to super heat liquids that in turn become steam and rotate the turbines of a generator to generate electricity.

How can solar power rescue the environment?
For starters, switching over to solar power would help cut back our dependence on organic fuels. This in itself is a huge saving, reduced hydrocarbons and emissions in the air, mean fresh cleaner air. Some ripple down effects would be, controlling the global warming, less acid rain, no smog the list can go on and on, however, let me elaborate some of the better know environmental benefits.
Decrease air pollution

The most commonly obvious benefit is the fact that by using solar energy we are able to reduce the levels of pollution. As we reduce the amount of fossil fuels being burnt and switch over instead to solar power from our needs there is a corresponding decrease in the amount of pollution produced. Solar electrification in some rural areas also decreases the dependence of the electricity grid and generators that run on petrol or diesel.

Offsets greenhouse gases
Solar Cell (PV systems) generates electricity with absolutely no carbon dioxide (CO2) emission. This in turn plays a significant step in reducing the overall greenhouse effect that we face. Apparently studies show that approximately six tons of carbon emissions are offset through the use of a single Solar cell over a period of twenty five years.
Conserve energy

The world over, and especially the third world countries have begun to embrace the conservation and use of solar electricity through several conservations programs to help conserve power for urban areas, city lighting as well as commercial and industrial needs. While solar plants and other forms of decentralised solar generated energy is used to serve the basic power consumption needs in the majority of the developing areas.

Reduces discarding dry cell batteries
People in several countries around the world rely heavily on the use of small dry-cell batteries for various gadgets, like flashlights and radio’s. These batteries are primarily composed of lead acid and sometimes other materials that can be toxic to us. When the battery is improperly disposed off, they start leaking; toxic chemical contents seep into the surroundings and contaminate the soil, water or air around it. By switching over to the use of solar energy the dependence on dry cells batteries reduces drastically and consequently all issues associated with its disposal.

Low cost energy alternative
Using solar energy at home substantially reduces the need for dependence on electricity or gas. Solar panels placed on your roof top collect the solar energy and store them away in batteries for later use. This power can be used to power up lights around the house in the evenings or when it is dark. Solar thermal converts can be used to heat water that or even your home again offering substantial savings on those fronts. Solar cooking ovens could be used during the day for baking and cooking meals.

The use of "Solar Energy", a fresh, clean, free and abundant source of renewable energy will over the course of time reduce our dependence on other sources of energy that aren’t as helpful to our environment. If you want to make a difference to the world you live in, this is a wonderful place to start.   atj