I am looking for a solar panel that it has a good randament in absorbing solar energy, and therefore has a small area.\n  I am asking this because I am living in a village somewhere in Transilvania in Bihor mountains that does not have electricity .\n  I am writing now from a city named Cluj- from my university.\n  Please help me in this problem.
121780
http://www.scitoys.com/scitoys/scitoys/echem/echem3.html#sflatpanel\nHere is a site that uses household type apparatus. simple and says it delivers some current. \n\nhttp://www.solideas.com/solrcell/english.html \nhere is another without household items but you can order the kit on here.
599267
See in\nhttp://www.solarenergysociety.ca/\nhttp://www.cmhc-schl.gc.ca/en/inpr/su/neze/index.cfm
658547
Build closed circuit pollution free hydroelectric power\nBuild new electric powered roads for electric cars and trucks\n\nmillions of high wage jobs building power plants\nmillions more jobs building new electric powered roads\nthousands of jobs building electric cars and trucks NO batteries needed this way the road has the electricity built in it\n\noverabundant 100% clean electric power 1,000,000 mega watts from a single power plant \n1000 times more power than the largest nuke plant(930 mega watts plant Volgtel in Ga.) more than Fusion!\n\nThis power plant has been all over the gov Clinton, Gore, Newt, Sam Nun, DOE\nClinton said"I'm to busy moving the counrty forward"\nGore said" good luck, I'm glad to see someone else is working on our energy problem"\nNewt "promised his full support" if I sold out to Ga. power .01c on the dollar to invent and patent this\nSam was to busy with armed services\nI have letters from these crumbs saying these things\n\nMason Wiggins of the Science,Space, and Technolgy Subcommitty a guy who knows tech,Newts energy guy said" this appears to be the secret we've been looking for" and took it to friends at the DOE.  DOEmanagement found out this came in the back door and threw out pollution free power. Mailed it back to me in an open enevlope with pages missing.  Said send it to NIST.  NIST said 5 years to get back to the DOE 5 more to decide to fund this; only $40,000 available to any 1 applicant\n\nBush's people do not even return calls or answer emails during energy summit\n\nGa power wanted to buy me out for.01c on the dollar\nSouthern Cal. Edison wanted .01c on the dollar\nPower Industry Consultants said revise your figure to 2% of my investment; they offered the most! 2%?\n\nGa to Cal. all attempts for gov funding got nothing!\n$50,000 in DC trips 1000's of calls and emails\nAll the utility engineers and not a single hole in this to be found ever!\nPatented! made no difference!\n\n400 page tech manual showing how and what size to buld these anywhere; got my patent allowed on the spot after 45 minute phone cal with my patent attorney and patent office examiner because my patent attorney could answer every question examiner put to him from my 400 page tech manual.\n\nOnly utility patent of it's kind ever!\n\nUtilites spend millions to patent even small improvements in existing power plants.\nPatent rights should be worth many times what a small improvement is worth!\n\nA first generation baby plant of 1000 mega watts generates $1billion per year of power in Cal. market\nSecond generation plants can make over 1,000,000 mega watts\nOverabundant 100% clean electric power to end conservation and Arab oil\n.05c per kilo watt electric power super cheap power all the power anything anywhere could ever use\n\nCould export electric power to the world; clean US made electric power\n\nGov wants us poor and working so much we can't get in their hair for being screw ups\n\ndems and reps have all the power so they bear all the blame\nvote! vote for anyone thats not a dem or rep\n\n2 nations and a US state pay not tax thier residents\nKuwait pays $58,000 y no rent, utilities, phone, hospital, income tax, gas is cheap free for motorcycles\nDubia pays\nAlaska pays\nI know it's OIL! Oil is just 1 of thousands of commodities. With all the thousands of commodities in your state why aren't you paid? With all the feds resources why don't they pay 50 times what Alaska pays?\n\npollititions lie, cheat, steal, back stab. corkscrew, dirty deal, murder, run the debt to the moon, raise taxes, int rates, give our money to foreigners that hate us, allow foreign co to cheat us out taxes they owe, send our jobs overseas, waste our money like no tommorrow, on yahoo 1.4 bil in bogus hurricane claims, deny money to renewable energy, MORE??????????
47550
Assuming you mean photoelectric and not just solar heat cells: \nThe material (silicon ore = sand) is not the problem, the trouble is the apparatus needed to electrolyse and purify the material, and then apply it to suitable carriers.
29665
This question can't be adaquately addressed in this forum.  There are a couple websites you can refer to for these answers.\n\nhttp://solarsystem.nasa.gov\nhttp://www.nineplanets.org
520241
The big expense is the cost of setting up.  Solar power is not particularly efficient at the moment so you have a lot of infrastructure that you have to put in.  Australia has just started funding a solar project recently\n\nhttp://www.theaustralian.news.com.au/story/0,20867,20645117-28737,00.html\nhttp://mdn.mainichi-msn.co.jp/international/news/20061025p2g00m0in017000c.html\n\nThese are a few articles on it.  The other costs are the drawbacks.  You have to store the power because power usually peaks at night time and solar power peaks during the day.  So you have the cost of energy storage on top of the plant costs.  To be totally honest with you I don't think anybody has a very accurate idea yet on how much it will cost to produce solar power.  It is an older technology but it has not until recently been investigated on the scale that people are looking producing today.  So there are costs of unforseen problems that will have to be factored in.  These costs should drop over time as solar power becomes more common but the initial outlay may be substantial.\n\nAnyway I wish I had more to say, Good luck with your research project.
207158
Well, if you can't even spell "solar" I doubt you would have the skills to mount and solder more than 2,000 4"x4" solar cells together, add blocking diodes, and wire the whole thing up in a weatherproof frame without breaking about half of the delicate little buggers.  If you need that much power, you're not going to save much of anything by trying to build your own.  Buy some ready made.
505275
This is shocking. I don't know if I should; your teacher should see this the way it is. Oh well . . . \n\n\nThere are some opposing assertions here. \nThey deride my opinion because they are saying it is too pessimistic, and that humankind will not be ruined. Their claims are like these: \nWe are in the middle of a growth period, and if technology is to advance, solar energy must be substituted for coal and oil energy so that pollution can be decreased, and we finally find the way to live together with nature. \nAs we were in the previous industrial-revolution era in Britain, we are in a time of transition; even though it seems bad, it's just a 'standing on tiptoe'. \nScience technology must lead us to the ideal society.\n\n\n\n\n***This is STILL terrible, I'm not going to re-write the whole thing. Plus they will know this is not your work. Get a tutor, quick.
586578
Tesla's tower, perhaps?  This is just another way we know that the solar wind is NOT electrically neutral, since the Earth has to absorb the energy and balance itself through the aurora act.  Our instruments in space can't detect the charge difference because the solar "wind" (or electric current) is so big in its plasma state, and the difference per cubic meter is so small.\n\nThis is why scientists like Phil Plait who ride on the nuts of big names like Einstein just might be wrong, but who are we to question Einstein, right?  Well we got bigger and better telescopes and satellites for one, and we've been able to take better pictures and observations because of this.  Damn, I think they were barely discovering the Sun's magnetic field during Einstein's time.\n\nThere are so many examples out there that demonstrate the electrical nature of the universe.\n\nMars, and how it got blasted?  Yep.\nhttp://answers.yahoo.com/question/index;_ylt=AlajPWBaIISxPbzkjEFDsqzsy6IX?qid=20060619194732AAwm9Mf\n\nComet's and their interactions with the Sun? Yep.  Venus' almost perfectly circular orbit, how we detected a long, "stringy" plasma structure issuing from Venus that nearly reached our planet, and how Venus spins the other direction very slowly, and how the entire planet has a nearly brand new surface, AND how ancient names for it are morning star, BEARDED planet, HAIRY planet, and SMOKY planet?  Oh yeah, double mother-fuckin' check on that.\n\nRead up on the "Electric Universe" theory, it's the future of space science.  All these old guys at NASA will be out of jobs if word ever gets out, so they'll get really mad when their life's work is challenged and I guess I can understand that.... but get OUT!
291813
It depends on the type of solar panel. Those that merely work in temp differential naturally preform worse. However, for those that work on radiation wavelength, the colder the temp the greater the voltage produced. The hotter the panel, the less efficient it is.\n\nNow why is this? Because both resistance and resistivity increase with temperature, thereby making the panels less efficient. This is why ultrafast and ultramodern computers are often liquid cooled.\n\nSo, provided that you can get enough of the correct wavelength of light to hit the panel (the same as in the summer) you'll actually produce a higher voltage.
130542
Solar energy is horribly inefficient, it only converts appx 3-4% of the energy available it, it costs a fortune to. i would suggest using a different form of renewable source. use solar energy to heat you water (very simple non-electrical system - black hose-piping within a black box - supprisingly effective for what you may thtink it is, this also saves money on electricity. \n\nYou could convert your central heating to a heat engine system (loads of info online about it) - expensive outlay but unlike solar cells very efficient with it.\n\nother than that common household electrical requirements nowadays are sickening and really need the national grid juice to power it. If you have a river/stream by your house tha can easily be harnessed to power all your lights, refridgerator and basic amenities ... - however how many ppl actually have a stream... LUCKY BAS***D'S!\n\nGood luck with What ever you do, any one cutting down their fuel useage is good!!!
630767
Solar panels are being improved on a continuing basis.  Price is coming down and performance is going up.  Still, they are expensive.  A panel roughly 1/2 X 1/2 meter runs about $100.  It generates 10 watts of power.  To make a panel 1km square would take 4000 of these at a cost of $400,000.  They would generate 40,000 watts or 40 kw or 0.04 Mw.
428275
Good question.\n\nThere seem to be many other sources of energy but they seem to be expensive to obtain or to require large amounts of land to be dedicated to crop growth or for collectors.  This is in itself a type of inefficiency. \n\nIn the long term prices may come down but energy such as crop based gasoline alternatives don't seem to me like they would cut it with a growing demand for gas their will be a growing demand for the amount of land that must be dedicated to its production. not to mention the population is growing and its not going to stop.\n\nIf we move toward becoming almost entirely dependent upon alternative energy we must move towards harnessing different kinds of power and not just search for one solution.\n\nA lot of money would be lost from a lot of big companies.\n\nFor instance there is a windmill type device you can purchase for your home needs right now for around $10,000 it is highly efficient\nand supposedly super quiet.  It is said to be able to generate between 30% to all of a homes energy needs depending on where you live. If too much energy is generated the excess may be sold back to the electrical company.  \n\nIf you could purchase three of these at the hefty price of $30,000 you could theoretically not ever have to pay a power bill again in some places or pay almost no bill at all. The electrical companies services could be utilized as a form of backup power.  \n\nIf everyone had these wind collectors this would certainly shrink the electrical power industry.\n\nThere is no information available to me about how much it can cost to repair these items or how well they can withstand the event of a hurricane or tornado. \n\nBut I dont think think alternative energy is a pipe dream it is just something that is going to take a large investment to start up and develop towards higher levels of performance and efficiency. \n\nThe engineering of rugged devices will have to play a large role and does currently, however, a lot of trial and error needs to occur to see what works where and why and what got destroyed by random acts of god and the forces of nature and how that can be prevented.\n\nShould things begin to look rather good for alternative energy... and it seems things look better day by day... energy companies would have to begin facing downsizing and new business models and perhaps invest themselves into the production of alternative energy or alternative energy generating devices for sale to the public.  Either way at some point they wont be the economic giants they have been to this point and thats probably gonna keep them from helping.\n\nAlternative energy will only be a pipe dream if people are afraid to nurture it and harness the energies available. This is something that is and will be heavily influenced by politics.\n\nOn another note, I think that nuclear power seems to be an "easy way out" but I don't believe that it is a good or secure solution.  There have been so many nuclear mishaps you dont hear about and so much waste that you cant prevent or do anything about. Aside from alternative energy being developed for fear of a lack of oil I also thought a large part of it was moving towards a cleaner earth. Moving towards nuclear power and nuclear waste is dangerous for everyone.  Radiation does not simply go away it is corruption of matter and it is "contagious".  Sure we could maybe launch it off into space, but should something go wrong on the way out of here we would face yet another type of radiological disaster.
266686
I don't know, but if you find one, let me know so I can move there.  I wish to integrate all of these into my new home but the cost is unbelievable.  The wind turbines will cost 20k and the solar panels around 30k.  I haven't even begun to look into the waste system yet.  Electric companies only buy and sell electricity and service the delivery equipment.  Look at the logo on the sides of their trucks...they are all the same logo, just a different name.  What a wonderful world.  haha
241256
We can do a lot better than nature.\n\nOur best solar cells can exceed 20% efficiency while photosynthesis is only about 1% efficient.\n\nWhile we might be able to mimic it the low efficiency would make it seem like a waste of time.
147234
First off..  forget every air conditioner...  all of them.  Then forget your water heaters.  Then, forget almost all your appliances, including the 'fridge. As a matter of fact, for the size house you have, where you are, and what you use it for, forget photovoltaics altogether.  If I were you, knowing what little I know about your situation, I'd probably put up some solar hot water collectors, and maybe look into some wind power.  But it sounds like you are on the grid already...  why do you want solar?  If it's to save money, as they say on the sopranos... 'fuhgedabboutit!!!'  A grid-tied panel or two might give you a warm fuzzy feeling about helping green up the earth or something.. but the reality is that your payoff time is about 20 years on that..  and likely never given your location.  Solar panels get very inefficient when they get hot.. and hot is what you have.  Solar hot water will help some, depending on how much you use.  Go to homepower.org and educate yourself on the reality.  For remote locations it makes sense, but if you already have city power there, it usually doesn't.  Good luck, and be smart.
312256
Photosynthesis is about 1% efficient while we can make PV cells about 20% efficient.\n\nThis is yet another case of nature being inferior to human technology.