Solar Energy

Articles related to Solar Energy

July 6, 2011

Solar Trackers Guide – Types (Passive,Single Axis,Dual Axis (2 axis),Price and Uses

Solar Tracker is a Device which follows the movement of the sun as it rotates from the east to the west every day.Solar Trackers are used to keep solar collectors/solar panels oriented directly towards the sun as it moves through the sky every day.Using Solar Trackers increases the amount of solar energy which is recieved by the solar energy collector and improves the energy output of the heat/electricity which is generated.Solar Trackers can increase the output of Solar Panels by 20-30% which improves the economics of the solar panel project. Solar Trackers are mostly used in ground mounted solar farms of capacity more than 1 MW.Note it is difficult to use solar trackers on residential rooftop installations.Horizontal single axis trackers are typically used for large distributed generation projects and utility scale projects. The combination of energy improvement and lower product cost and lower installation complexity results in compelling economics in large deployments.However for solar ground plants where area is not a problem,solar trackers can be easily be used.Also commercial and utility solar projects have dedicated maintainance teams which can easily repair and monitor solar trackers.The 20-30% increase in output easily compensates for the higher costs associated with solar trackers.Note Solar Trackers are especially useful in case of places where the solar insolation is high and the efficiency of the solar panels being used are high.Sunpower which makes the highest efficiency solar panels uses Solar Trackers in most of its ground mounted plants and sells solar trackers under its own brand.These days solar trackers are becoming increasingly important and major solar panel manufacturers like First Solar and Trina Solar are selling solar trackers as well.The selection of tracker type is dependent on many factors including installation size, electric rates, government incentives, land constraints, latitude, and local weather.
July 6, 2011

Solar Frontier Module – Review of Technology(CIS),Panel Warranty,Prices(150 Watts) and Comparision

Solar Frontier is a Japanese company which was earlier known as Showa Shell Solar .The company joined the rank of major solar companies once it started the new 900MW “Kunitomi” production plant in Miyazaki.Note only is the company started big in production,it is rapidly signing deals around the globe in India,Middle East and America..The Company has recently signed Two Deals with 2 Global Heavyweights GE and IBM.It has signed a distribution deal with GE to sells its Copper Indium Selenide (CIS) Panels in USA while GE would provides the Balance of Systems components like inverters etc.It next signed a deal with IBM to jointly develop Copper Zinc Tin Sulfure Selenium (CZTS) Thin Film Technology.Note IBM is one of the biggest Technology Innovators and Solar Frontier has a long Thin Film History.
July 6, 2011

How are Silicon,Thin Film Photovoltaic Solar Cells Made and Different Types

What is a Solar Cell A solar cell is an electrical device that converts light energy directly into electricity by the photovoltaic effect.Note Solar Cells can be made of many materials like Silicon,Cadmium Tellerium,CIGS and even on Organic Substrates.However almost 90% of the Solar Cells produced in the world currently are made of crystalline silicon.The drastic fall in prices of silicon solar cells has seen an explosive growth in demand with solar cell supply increasing by almost 50% per year in the last decade.
July 6, 2011

Thin Film Solar – All about Panel Manufacturers (Amorphous Silicon,CIGs),Stocks,Material Technology,Efficiency and Costs

Solar Thin Film Technology has been growing rapidly despite falling costs of the mainstream Photovoltaic Crystalline Silicon Technology.While the current solar supply glut has resulted in some of the thin film solar film companies going out of business,big thin film suppliers continue with their growth plan.Solar Thin Film Technology is supposed to be the 2nd Generation successor to the mainstream Crystalline Silicon (c-Si) Technology which accounts for around 85% of world production.While a number of Weaker Hands in Thin Film have downed shutters,Thin Film Producers continue to grow and expand.The massive growth potential of Solar Energy makes it possible for both of these PV technologies to flourish.Thin Film Technology unlike c-Si has a number of variants.Amorphous Silicon (a-Si),Copper Indium Gallium Sulphide (CIGs) and Cadmium Tellurium (Cd-Te) are the 3 main types of Thin Film Technology.There are a number of manufacturers of all of these 3 types of Technology.CIGs Technology is said to have the most potential in improving efficiency and competing with c-Si,however Cd-Te is currently the top dog as the world’s biggest solar producer First Solar currently uses this technology.a-Si Technology is not that hot with low efficiencies however Oerlikon and Sharp are pushing ahead with developing this technology.
July 6, 2011

Kaneka Solar Hybrid Thin Film Solar Panels – Review of GSA 60 Watt Solar Moduel Sale Prices,Technology

Kaneka is a Japanese company which is present in a number of product categories like chemicals,functional and expandable plastic products, foodstuffs, life science products and synthetic fibers.However the main focus of the company is in Thin Film Solar Panels.Kaneka has been developing amorphous silicon thin film technology since 1980 and has advanced manufacturing into developing higher efficiency tandem microcrystalline silicon solar panels.The company also sells transperant see through solar panels.Note Thin Film Technology is facing existential threat from the rapid price reduction in the mainstream crystalline silicon technology which comprises about 85% of the global solar panel market.Kaneka sells its solar modules under the HYBRID brand name which refers to its hybrid tandem thin film silicon technology.Note other companies like Sanyo,Mitsubishi.Oerlikon have also developed this form of technology which gives higher efficiency solar panels as it captures a bigger part of the solar spectrum.
July 6, 2011

Solar Power in Australia – All you wanted to know about Buying Panels,Inverters Prices and Government Subsidies

Solar Power in Australia has grown massively in 2010 and 2011 driven by state feed in tariffs also known as the solar bonus scheme or solar credits.This has resulted in the capacity limits being reached and most of the state solar subsidy schemes have been withdrawn (see the current state feed-in-tariff schemes below).However the Australian federal government is still offering the Renewable Energy Credit Scheme under which solar power generated is eligible to get solar credits which can be solar in the open market for cash.This will still drive the use of solar energy as the falling prices of chinese solar panels has made solar energy near electricity price parity in a number of places.Australia which gets a lot of sunshine is ideal for solar energy which promotes climate change mitigation as well besides reducing pollution.Australia has the highest average solar radiation of any continent in the world, which means solar industry has the greatest potential.
July 6, 2011

Solar System Inverter Efficiency Tutorial on Curve,Types (CEC,European,Average)and Comparision – PV Efficiency Increasing Every Year

Solar Inverter Efficiency is increasing every year with increasing scale of operations,greater competition and rising R&D dollars being poured into solar inverter development.PV inverter Efficiency is vital to decrease the costs of solar power which is currently more than that of fossil fuels.While the cost of solar panels has come down drastically by almost 75% in the last 3 years,solar inverter costs have gone down by only 10% every year at most.The reason is that competition is lower in the PV inverter market because of the higher entry barriers of technology.While Western solar inverter manufacturers routinely get above 95% efficiency,the Asian low cost players have not been able to cross the technology hurdle of high efficiency.Note the Power Electronics in a solar system can make a huge difference to the power yields with even a 1% change resulting in thousands of dollars in difference in large scale solar farms.This is the reason that high efficiency solar inverters from the West command a big price premium over the less reliable lower quality PV inverters.You should be careful of any lesser known inverter brand they are offered as part of a home solar power system before installing them. While some of these inverters may have certification this does not mean they can perform as well as the good brands.Skimping of a few dollars here and there may make you penny wise and pound foolish.
July 6, 2011

Bosch Solar Energy/Panel Price Review – Expensive Solar Acquisitions Ersol,Aleo Fail to Pay Off

Bosch started out into the Solar Energy field by making a very expensive acquisition of a Tier 2 German solar company Ersol in 2008 for Euro 1.1 billion.Bosch paid a premium of 60% for buying out Ersol which was a manufacturer of wafers,cells and modules.The company paid a very price to buy Ersol which was a jack of all trades kind of solar company without any substantial competitive advantages.Bosch had set a target of Euro 750 million from renewable energy (don't know whether they met it ).Bosch made a bad decision because at the current stock prices it can buy almost the entire German solar panel manufacturing sector for Euro 1.1 billion.Its doubtful that Ersol would have survived the current solar panel downturn and was extremely lucky to get bought by Bosch for that price.The company also bought two other small German solar companies at expensive valuations Aleo Solar and Johana Solar (a thin film solar panel producer).It could have similarly bought these companies or even better companies at much cheaper prices.
July 6, 2011

Most Efficient Solar Panels (HIT,E-20,ZTJ) On the Market for Sale

Solar Panels are sold by hundreds of companies around the world ranging from small to very large and comes in various shapes and sizes as well.Besides this solar panels are also made of very different materials for example silicon solar panels and thin film solar panels.So comparing solar panels and choosing a solar panel is a very difficult process if you want the best solar panel according to your need.The most efficiency solar panels are needed in cases where the land area or rooftop area is at a premium.Note a typical 200-250 watt solar panel requires an area of 60x38 inches which means an area of around 2000 square inches.1 megawatt of solar panels would require an area of between 5-10 acres of land depending on the efficiency of the solar panels.However this can be reduced by using solar trackers which can increase the output of solar panels though they to increase the area requirement slightly.Also the area also depends on the location of the place since a place recieving high sunlight for example California would require lesser area for generating the same amount of electricity compared to London (upto 30% fewer solar panels).Note solar panels with higher efficiency have a higher price tag associated with them since they require higher cost to manufacture.The most efficiency solar panels which are used in spacecraft and have a efficiency of around 35-40% may cost upto 100 times more than the normal silicon solar panel.
July 6, 2011

Solar Panels Manufacturers USA – Complete List of Top Domestic Solar Panel Suppliers (Sunpower,First Solar,Suniva,Uni Solar,Solarworld,Sanyo)

Solar Panel Manufacturers in USA are facing a torrid time from the falling prices of Chinese solar panels.This has caused the bankruptcies of some big solar panel companies in recent times like Solyndra,Spectrawatt and Evergreen Solar.Only those solar panel companies with the lowest cost and good quality will manage to survive the price war in solar panels that is currently on.Most companies are running losses as the prices of solar panels have decreased by 40% in 6 months.This would cause any industry to see massive bankruptcies and this is the case with the solar panel industry as well.Note Solar Industry is a new one with rapid technology and cost changes which makes startups with bad business models go bust.This is a natural effect of capitalism and nothing to be afraid of .However you have to be careful of which solar panel manufacturer to buy from as your 25 year solar panel warranty will become useless if the solar panel manufacturer from which you brought the solar panel goes out of business.On the Bright Side the sharply declining costs of solar has made it the biggest advantage of using solar power.
July 6, 2011

Types of Solar Panels Explained (Amorphous,Polycrystalline,Monocrystalline with Efficiency) for Home

Types of Solar Panels have increased manifold with the surging global solar demand fueled by falling prices of solar panels/modules.Note Solar Panels prices would have fallen by around 75% in 3 years which is a record for any energy let alone solar energy.This has made Solar Electricity on par with Electricity prices in a number of places globally.The number of manufacturers of solar panels too has increased drastically particuarly in China and Asia.The range of technologies being used to made solar panels has also increased in tandem.However polyscrystalline silicon solar panels continues to be the king of solar panels accounting for a lion's share of solar panels produced globally (around 75% according to my estimates).Each Solar Panel Technology differs from others in terms of efficiency and price.They also differ in their electricity production capabilities depending on temperature.They also differ in weight and flexibility.The Sizes of Solar Panels are also quite different and different powered solar panels are required for different applications.For a small power need like charging a mobile phone only a 5-20 watt solar panel would do while for powering a solar house you would need a number of 200-300 watt solar panels.
July 6, 2011

How Does Solar Power Work – Process of Solar Energy Panels Generating Power

Sun Power is the largest source of light in the is universe. It helps in providing food & oxygen for us, where sunlight is captured by plants in the process of photosynthesis. It helps maintaining the environmental balance by the continuous formation of vapours & condensation as rains. On a bright, sunny day, the sun's rays give off approximately 1,000 watts of energy per square meter of the planet's surface. If we could collect all of that energy, it could easily power our homes and offices for free. Other than these natural benefits, that the solar energy provides, it has many commercial usage too. Countries like Germany generate almost 20 GW of power from the Sun. Italy, Spain & Japan too generate a lot of electricity through the sun. Some of the smaller European countries like Czech,Belgium too are generating lots of solar energy through proactive Green policies.The bigger countries in the world like USA,China and India are slowly realizing the potential of Solar Energy and are rapidly increasing the amount of Solar Energy products. Solar Energy despite many years of development is not used in the generation of Electricity due to its higher costs.However that is going to change as Solar Energy is the only form of Energy whose costs are continuously declining compared to other forms of Energy.
July 6, 2011

ET Solar Group Panels(190W,280,235) Review of Prices,Cost,Where they are Made – Are they Good in UK,Australia

The ET Solar Group was founded in 2007.The company is relatively small compared to the biggest solar panel producers like Yingli,Suntech as its capacity is one/fifth the size of these big panel producers.It is more comparable to small Chinese solar companies like CEEG Solar,Eging and Sunlink..ET Solar is a quasi vertically integrated solar equipment manufacturer with presence in Europe, North America and Australia. ET Solar iis not fully integrated like LDK,Yinglie which makes polysilicon as well.However it does make silicon ingot, wafer, cell, module and a variety of BoS component products. ET Solar offers high-quality modules, inverter, tracker, BIPV, PV Kit and other solar products in more than 50 countries and regions in the whole world. Worldwide more than 500MW projects are already finished.The company is not publicly listed but is funded from Private Equity Sources.In these tough conditions it is questionable whether ET Solar can survive as it is not a Tier 1 producer.ET Solar has a good presence in the UK and Australian Markets.However Australian Solar Power Industry has seen a number of solar panel producers entering the industry and there are good alternatives available from Trina and Suntech
July 6, 2011

SunPower Solar Panel Review of Trackers, Solar Tiles, Warranty, Specifications and Prices

Solar Panels are now available from hundreds of different manufacturers using different technologies like crystalline Silicion,CIGs and Cd-Te.The Solar Panels Efficiency also varies a lot depending on the solar panel manufacturer and the technology used.The cost of the solar panel can also vary a lot depending on the retailer,size of the solar panel,technology and the brand.This makes buying solar panels a confusing problem though most residential and commercial buyers are not involved leaving the decision to the solar installer/EPC company.Sunpower is a US company which makes the most efficient solar panels using its monocrystalline solar cell technology which gives efficiency of more than 24%.The company sells black solar panels with efficiency of 18-20% .The company is a solar system integrator and developer as well building some of the largest solar farms in the US.The company was recently bought by the French Oil Giant Total.Sunpower operates in all the main segments of the market and has reputation for selling some of the highest quality solar panels in the country.
July 6, 2011

First Solar Solar Panels Price,Efficiency Competitors Review and How to Buy- First Solar Module Cost Per Watt for Households

First Solar is going to the biggest producer of solar panels in the world despite having a solar panel technology which differs from almost all of its competitors.First Solar Solar Panels use Cadmium-Tellurium Thin Film Solar Technology while the majority of the Solar Industry uses Crystalline Silicon Technology.Despite the difference First Solar is the most valued solar stock in the world and has been for a long time.Despite stiff competition from the silicon technology and most of the thin film companies going bankrupt,First Solar has managed to hold on cutting costs and improving yields continuously.In fact First Solar Solar Panels have the lowest cost of production in the world.First Solar Solar Panels efficiency has also increased in the last few years such that First Solar is now targeting commercial segments of the market.Note First Solar earlier used to sell solar panels mostly to developers and utilities to build ground mounted solar panel farms where the lower efficiency of the Cd-Te solar panels did not matter.The reason is that in large solar farms space and area constraints are not there unlike in rooftops where the space is a major issue.
July 6, 2011

How to get Subsidy for Residential and Commercial Buildings and Home PV Solar Energy Systems in India – List of MNRE Empanelled Solar Panel Installers,Procedure

Solar Power in India is generating huge excitement with falling prices of Solar Power and government incentives under the JNNSM.However Subsidy of Home and Small Commercial Solar Energy Systems has not been big enough.Unlike Western Countries which are shifting their government subsidies towards smaller solar rooftop systems,the Indian government is supporting even larger solar panel plants.This will lead to only large investors,utilities and companies being left in the fray and lead to lesser competition.Also there is no support for rooftop solar which will help to broad base the reach of solar energy.A Policy which helps distributed solar like Germany will do much more to boost solar in the country than supporting massive solar plants that will only help large companies making the most of the taxpayer subsidies..Note Delhi is the only state in India which is giving primacy to rooftop solar systems and is in the process of announcing a capital subsidy soon.The reason may be that Delhi mostly consists of urban homes and they have little option.However there is a subsidy available for small home solar power systems though it is difficult to get and only possible for large corporates till now.
July 6, 2011

German Solar Panels – Best Quality,Brands in Australia,Comparision vs Chinese

Germany till a couple of years was the home of the biggest solar panel manufacturers in the world.This was driven mainly by the German Renewable Energy Law (EEG) which is the most successful renewable energy subsidy in the world.The German Solar Market has become the biggest in the world for the last 2-3 years and an estimated 25 GW of solar panels would have been installed in Germany.Capitalizing on a large domestic market a number of solar companies like Q-Cells,Solarworld,Solon and others became the biggest in the world.However the rise of the Chinese solar panel manufactures has made these companies shrink with some of them like Q-Cells facing questions of survival.The prices of the Chinese solar panels has become lower than the costs of the German made solar modules putting the economic viability of the German solar panels in question.Though the quality of the German made solar panels is higher and some of the best solar panels in the world are produced by the Germans,the price differential has meant that Chinese have captured almost 70% of the global solar panel market leaving little for the German solar panel companies.The Italian Feed in Tariff Law Contio Energia 3 has given somewhat of a boost to the German solar panel makers as it gives higher subsidies for solar projects,farms using European based modules.However German solar panel producers are in a secular decline with most of them shifting their factories to Asia.Q-Cells and Bosch have set up big solar manufacturing facilities in Malaysia while Solarworld is doing so in the US.Another Big European Solar Producer REC is closing its factories in Norway while expanding it in Singapore.
July 6, 2011

Solar Panel Size -What is Standard Solar Module,Cell Dimensions,Size,Cost and Calculating your Electricity Requirements

Solar Panels have decreased dramatically in cost from about $800 in 2008 for a standard 200 Watt Solar Panel to about $300 which means more than a 50% decrease in costs.In these days when the price of electricity and energy is constantly increasing this is an amazing fact and the decreasing cost of Solar Energy has made it the biggest Advantage of using Energy from the Sun.Cheap Chinese Solar Panels can be now be bought as low as $250 in bulk which implies that you can easily buy a Solar Array of 10 Solar Panels for your home at a cost of as low as $2500 .While the initial investment may look high you can look at electricity savings for 25 years as Solar Energy requires NO FUEL and very little maintenance as well.Solar Panels are already ubiquitous in places like Germany and Italy which have strong government support programs called Feed in Tariffs.With prices of energy increasing and Global Warming,its a matter of time when Solar Panels become as common as Lights in your home and offices.Solar Panels Installation is normally done by a Solar Integrator or Installer who decides on which Solar Panels to Buy and Designs the Systems.But as an owner of a Solar Panel System you must have a good idea otherwise you might get cheated upon.
July 6, 2011

CNPV Solar Power Panels Review of Company,Cost and Comparision

CNPV is one of the bigger Tier 2 Chinese solar panel manufacturers with its factories based in China.The company does not have a big presence in the retail solar panel market as it sells mainly to solar farm developers.However with solar roofs becoming more important as government focus their efforts on residential installations compared to utility installations,it a matter of time before CNPV becomes available through online and offline dealers for residential solar.Quality wise and price wise the company is comparable to the smaller Chinese solar panel producers like CEEG,Sunink,ET Solar and SunEarth.However it does not have the backing of a big parent group so there is the danger that the company may not be available to survive the solar glut which has seen the solar panel prices coming down by more than 50% in 2011.However given its listing on the NYSE and its recent order flow from big distributors,it looks unlikely that it will fail.
July 6, 2011

Australian Solar Inverters – Review of Manufacturers ,Prices and Comparision – Best Solar Inverter

After Solar Panels,Solar Inverters are the second most crucial component of the overall solar system accounting for around 10% of the overall costs.Solar inverters connect the solar panels to the grid converting the DC to AC which is used by the grid.Note for off grid solar installations,solar inverters are required as most electrical devices need AC for their operation.There are both grid tied and non grid tied inverters available on the market.Solar inverters have become highly sophisticated with features like optimization and monitoring etc.The efficiency of solar inverters are a major factor in their purchase as well as the quality and reliability.Inverters comes in various sizes and can be as large as 1 MW for utility applications.Note unlike solar panels,solar inverter manufactures are much bigger in size with SMA Solar having a 40% global marketshare.
July 6, 2011

Solar Rebates in Australia – Guide to Government Credits,Subsidies,Gross and Net Feed in Tariffs by States and Federal

Soar Rebates are a very important decision making factor when buying solar panels for your home or office or factory.The reason is that solar energy today is still not competitive with fossil fuel energy.However the costs of solar energy have declined dramatically in the recent past.It is estimated that solar energy will be competitive with coal,gas and other fossil fuels in 2-3 years in most places around the earth.In fact it has already reached "grid parity" in a number of countries like Italy,Hawai where there is a lot of sunshine and the cost of electricity is also high.Australia too has a large number of sunny hours which makes it ideal to install solar panels.State governments in Australia have been at the forefront of giving rebates and subsidies to promote solar energy in the country.This has resulted in a large boom of solar installations among residents in the country who are taking advantage of the generous subsidies.Though recently a number of provinces like New South Vales and Victoria have reduced the solar rebates , the falling cost of solar panels in Australia has still made it attractive enough for people to put up solar panels. Most of the state government Feed in Tariff Schemes have closed down under a deluge of applications and have reached the limit.Now the rebates for solar energy is federal in nature where you can receive a Renewable Energy Certificate (REC) or Solar Credit for the solar energy generated from solar panels.Here is a list of the solar rebates and subsidies available in different states of Australia.
July 6, 2011

Solar Lighting in India Guide- List of Suppliers (Tata BP Solar) and Products(LED) for Home and Commercial

Solar Power in India has been growing at an explosive pace due to declining costs of Solar Energy and incentives given by the Government of India under JNNSM.While most of the subsidies for solar energy in India are going to large solar farms,Solar Lighting is also growing steadily without any support.This is due to the fact that Solar Lighting saves on electricity costs and is also environment friendly.Solar Lighting in India is gaining traction not only in the upper income segments but also at the bottom of the pyramid.Solar Lanterns and Lamps are replacing expensive,GHG emitting kerosene lamps in poor rural as well as urban India.Depsite shoddy subsidies,solar lamps have become economic to compete with fossil fuel alternatives.Solar Lighting is also being heavily used for Street Illumination in places where the electricity grid is not present.Solar Lighting is also gaining acceptance in use in gardens where they can capture sunlight in the morning and light the gardens in the night using the stored energy.
July 6, 2011

Amorphous Silicon Solar Panels – Sale Price,Manufacturers,Lifespan and Amorphous vs Crystalline Silicon

Amorphous Silicon Solar Panels were the big rage in 2-3 years ago when the prices of polysilicon the main raw material were touching $500/kg making the mainstream crystalline silicon solar panels very expensive.Amorphous Silicon (a-Si) on the other hand is a non-crystalline silicon which is deposited as an extremely thin layer on glass and other substrates.The cost of the silicon is much lower though the efficiency of solar cells which are made from a-Si is about half of those made from crystalline silicon.Applied Materials with its SunFab turnkey amorphous silicon (a-Si) equipment capitalized on this opportunity, lining up a number of customers with some customer orders in the range of a Billion Dollars.Oerlikon Solar was the other major thin film equipment market winning customers in Europe and China.Sky high poly prices also gave birth to numerous Thin Film startups planning to Manufacture and Use their own equipment rather than selling it .
July 6, 2011

Guggenheim TAN Solar ETF Complete Guide – Ticker,Stocks,Holdings and Components

Solar ETFs are in the new because of a spectacular decline in 2011 caused mainly by the massive oversupply of Chinese solar panels.This has resulted in the two solar ETFs TAN and KWT making new all times lows.The main reason is the huge negative sentiment towards green energy stocks in general because of the lack of support towards climate change and over competition from Asian companies.However the Solar Industry is one of the best growth industries and the leaders who come out of this consolidation will have a bright future.You can see the 100 solar energy stocks to pick up what you think would be the leader.For less ambitious mortals you can look to pick up the TAN Guggenheim ETF which is the biggest solar ETF.You can also look at the comparison between TAN and KWT to decide on what to buy.Note Solar Energy's biggest advantage is the falling costs of solar panels which is bad for the solar companies but great of solar demand and customers.When the weaker hands go out of business which is already happening (Solyndra),the solar companies that remain will make huge profits as they did in 2010 when demand surged by 150%.
July 6, 2011

Solar Tracker Manufacturers (USA,China,India) List and Market – Review of Sale Price and Cost

Solar Trackers are used to increase the Energy Output from Solar Panels and Solar Receivers.Solar Tracker is a Device which follows the movement of the sun as it rotates from the east to the west every day.Solar Trackers are used to keep solar collectors/solar panels oriented directly towards the sun as it moves through the sky every day.Using Solar Trackers increases the amount of solar energy which is received by the solar energy collector and improves the energy output of the heat/electricity which is generated.Solar Trackers can increase the output of Solar Panels by 20-30% which improves the economics of the solar panel project.
July 6, 2011

Solar Air Conditioner in India – Types (Hybrid, Sun Powered Direct Current ACs),Cost and Manufacturers (Onyx)

Solar Air Conditioner or Solar AC refers to an Air Conditioner where the energy for the air conditioning is dervided from solar energy.There are 3 types of Solar Air Conditioning namely passive solar AC,solar thermal and PV Solar Air conditioning.Solar Air Conditioners though a niche area are expected to grow strongly in the future in hot areas like India where Air Conditioning is consuming huge amounts of energy and where there is sufficient sun light to generate big amounts of solar energy as well.
July 6, 2011

How Solar Panels produce Electricity – Efficiency,Challenges and How to Buy Affordable Solar Panels

Assemblies of solar cells form solar panels. The raw material in solar cell- silicon in its purest form makes an ideal neutral platform for the transmission of electrons. Silicon also has some atomic-level properties which make it even more attractive for the./ creation of solar panels. Solar panels receive sunlight and actively convert that energy into electricity. The solar cells have a large area p-n junction diode which convert the energy from sunlight into usable electrical energy. The basic principle behind the procedure is Photovoltaic Effect, photo = light, voltaic = electricity ie. conversion of sunlight into electrical energy
July 5, 2011

Multijunction Solar Panels and Cells- Guide to Manufacturers ,Efficiency,Concept and Cost

Multijunction Solar Cell Concept The basic principle on which solar cells work is Photovoltaic ie. they convert the photons from the sunlight into usable electricity. However, in this process neither is all the light absorbed nor does all the photons get converted into electricity. High energy blue light photons do not have all of their energy converted into electricity, some is wasted as heat & low energy red light photons are not absorbed at all. Sunlight is made up of a broad spectrum and depending upon these various wavelengths, photons of light also have different energy levels.Hence, to minimize this wastage & to enhance the efficiency of solar cells, scientists came up with the concept of multijunction solar cells.
July 5, 2011

Samsung Solar Panels Review of Prices of PV Cells Module (UK,Ontario)

Samsung had decided a couple of years ago that it wants to be a major player in the Green Industry and has lined up billions of dollars to invest in solar and wind energy over the next decade.The company is already starting up massive solar panel plants and wind turbine factories as it hopes to capture a large chunk of the clean technology industry.Samsung is a global leader in the Semiconductor area which it is trying to reinforce by huge capital expenditure.Samsung has strong expertise in the areas of LCD and Memory manufacturing and technology, which it can easily leverage to develop Solar Thin Film technology.However,Samsung is focusing its efforts on high efficiency Crystalline Solar Technology.It recently announced a big investment commitment to Ontario in offshore wind and solar manufacturing and generation.The company wants to rival conglomerates like GE and Siemens which already have a large presence in wind,solar and smart grid technologies
July 5, 2011

Solar Panels NZ Buying Guide – List of Brands,Solar Installers,Suppliers,Prices,Types

Solar Power is rapidly increasing around the globe driven by falling prices of solar energy and increasing costs of electricity generated from coal,oil and gas.Besides governments are supporting renewable energy as it leads to increased energy security,less pollution and helps in reducing global warming.Solar Panels Costs have fallen rapidly in recent years falling to as low as $1/watt from $4/watt in 2008.This is due to increasing scale of manufacturing by Chinese producers of solar panels,improved technology and efficiency.While Solar Panel Installations have profilerated in Europe and even in Australia driven by state government rebates,they have not really taken off in New Zealand. The reason is that the prices of solar panels are still higher here because the market is so small that volumes have not decreased the price yet.Major solar panel manufactures also don't have distribution in New Zealand which means that only high cost solar panels are only available from companies like Mitsubishi and BP Solar which are niche players in the global arena.In fact BP Solar has stopped manufacturing solar panels and outsources the production to Asian companies.