Introduction to Solar Photovoltaics
User comments:
[2011-03-15 06:08:55] geckologicusa - it will be standard ...
it will be standard procedure. Many Developers are now implementing solar panels on their suburban developments. It is all about the de-centralized "smart grid" :)
[2011-03-14 21:26:08] kricotas - thank you!thank you!
[2011-03-14 12:54:11] dee756 - when we got them i ...when we got them i was very confused about how many etc, the easiest way to work out how many you'd need is when you receive your electricity bill somewhere on the bill it should show how many kW per day you are averaging out to using, this way it is easier to work out "at their top working rate" how many panels you would need! Say you use 20 - 28 kW per day , most panels are about 2. something, so you would need about 18 - 20 panels to get close to covering your bill!
[2010-12-04 08:04:38] xxxpole26xxx - Sukate qui!Sukate qui!
[2010-11-23 17:21:50] wariorx1z - what the hell they ...what the hell they need to start using this stuff if global warming is such a big deal
[2010-10-22 23:42:34] rebelliouseoagj - REAL Free energy ...REAL Free energy technology exists!But the Establishment doesn't want ppl to know this,Get the blueprints for a real Magnet motor free enegy machine at LT-MAGNET-MOTORdotCOM ,Start the energy revolution!
[2010-10-19 12:57:17] mcgrueser - Very intuitive but ...Very intuitive but didnt you notice that this was a video made for the uk....thought you would've picked up on that given your powers of observation!
[2010-09-11 18:26:45] kricotas - i did mesure with ...i did mesure with multimeter rates at 20.8 v !
[2010-09-11 05:28:23] UKSlimming - Hi Kricotas. I'm ...Hi Kricotas. I'm not familiar with the products you have but if your inverter is rated 1.5kW then you could go to about 20 x 85W solar modules (panels.) The suitability of your batteries depends on their collective capacity rather than their number.
[2010-09-10 13:06:38] kricotas - how is the ...how is the calculations?
[2010-09-10 13:05:09] kricotas - hi! question? i ...hi! question? i have bought 85 watts solar panel im trying to intend to buy slowly solar panels i dont have that much money i di buy sunforce charger Cont, ineverter 1500 18 bateries how many solar panels i sould stil buy? thank you
[2010-08-08 12:38:39] henrykay01 - I invented a ...I invented a breakthrough source of energy, which contradicts the law of conservation of energy. I have a PROOF that there are electrodynamic phenomena which contradict the law of energy conservation. It will cost about $1200 to make a 6 kW generator in mass production. Value of the energy produced yearly about $5400. I am looking for $300 000 for a prototype and for $3M for patents. H. Tomasz Grzybowski tel. +48-512-933-540
[2010-07-23 07:47:15] windymac - dzgfdg - You need ...dzgfdg - You need to educate yourself before authorising on a subject. First read about feed in tariffs. Now get your calculator out. Deduct 12,500 from 25 x 850. That's how much the householder with a 2.4kw system will make on the feed-in tariffs. Now you need to add to that the 20-40% saving on their electricity bills (that's indefiniteiy by the way.) Add the fact that the value of their property increases by the cost of the installation. There are some idiots here and you're one of them.
[2010-07-04 16:22:03] henrykay01 - I invented a ...I invented a breakthrough energy source which violates the law of energy conservation. I have a PROOF that there are electrodynamic phenomena violating the law of energy conservation. I am looking for $30000 for a prototype and for $3M for patents. In mass production it will cost $1200 to make a 15 kW generator, value of energy produced YEARLY about $10000. H. Tomasz Grzybowski tel. +48-512-933-540
[2010-06-18 22:21:37] youtubasoarus - -- The problem is ...-- The problem is profit and conflicting interests in what is profitable. If everyone was using solar power from the sun, nobody would pay energy companies, who make billions, if not trillions of dollars per year.
[2010-06-16 05:15:50] pc4nae - Every hour enough ...Every hour enough energy reaches the earth for to meet the need for one year? Yet in a video titled "How Photovoltaic Solar Cells Work", they state every minute enough energy reaches earth to meet the need for one year. So which is it, you can't both be right. Maybe neither of you are right? I don't know who to believe these days....maybe I'll just make up my own reality...
[2010-04-28 18:47:54] altagolfer - My question is - ...My question is - what if a hail storm were to damage the panels? Who would replace them, and at who's expense?
[2010-04-28 11:37:06] pacificcresttrans - In the past 20 ...In the past 20 years, the demand for solar energy for domestic energy purposes has grown by up to 25% per year. With energy costs constantly increasing, governments are looking to solar energy as a more viable option to meet a growing need for energy. Pacific Crest Transformers has more information on this. You can also read whitepapers and articles on alternate energy at the Pacific Crest Transformers website
[2010-04-09 22:51:30] Sinncrow - Really good videoReally good video
[2010-04-06 16:44:34] MrEnergyCzar - Great video...I ...Great video...I converted my home to a net-zero solar powered home that uses no oil or gas...I made a video about it called, "Preparing for Peak Oil"....
[2010-04-06 13:33:05] henrykay01 - I invented a ...I invented a breakthrough source of energy that contradicts the law of conservation of energy. I have a PROOF that there are electrodynamic phenomena that contradict the law of conservation of energy. I am looking for $6M for a prototype and patents. H. Tomasz Grzybowski tel. +48-512-933-540
[2010-02-01 07:35:15] robz40 - You a few good ...You a few good points but the subject is rather vast to be discussed just with a few lines but keep this in mind. Solar and wind energy are unreliable therefore they need the grid and conventional or nuclear power anyway to back them up. These renewables DO NOT add power to the system, they only save a bit of fuel. For example 40-60bln$ on PV lasting 30 years (and they don't) only allow to save 30x0.01x7bln=2bln$ in nuke fuel + installing the nuke power station anyway. 40-2=38=bad deal
[2010-01-31 20:37:37] djbrian24 - You're exactly ...You're exactly right, but tax incentives are a way of life. Why should my federal tax dollars pay for a TSA employee at an airport in Idaho when I live in Alabama? The previous solar slump is a thing of the past. As we continue our dependence on foreign energy, rather than capitalize on a huge opportunity to become the leading exporting nation of solar and other forms of alternative energy, we'll continue to slip further into debt and become vulnerable to attacks, in more ways than one.
[2010-01-31 16:13:34] robz40 - If it makes sense ...If it makes sense you are welcome to install them but remember: subsidies distort the real market and pass the costs on someone else and I can provide you with real data where PV became obsolete after 9 years. Warranties are only worth the duration of the company that can honour them.
[2010-01-31 16:02:30] djbrian24 - PV allows you to ...PV allows you to generate clean electricty which you sell back to the power company for "store credit." With the 30% uncapped federal tax credit, state rebates, and low financing options, payback can be as low as 7 years. What's the payback on your car? PV is one thing you can actually buy that adds value, pays back, and helps the environment. Most PV manfacturers offer a 25 year warranty, when in fact solar will produce electricity for you for 35-40 years. It just makes sense.
[2010-01-28 06:54:13] robz40 - It might be ...It might be surprising but PV is uneconomical even if the PV modules on the roof are free. Why? Because they constitute about 1/2 of the total cost of a PV system.
[2010-01-28 01:39:52] mikecccc987 - Fortunately, ...Fortunately, isolated solar panels are very cheap and continuing to drop in price.
[2010-01-15 06:49:01] robz40 - Your estimates on ...Your estimates on efficiencies and losses are not real, I wonder where you got them from. PV is the most expensive way to produce electricity and it needs to be supported by conventional or nuclear power anyway. But if you're happy to spend your 1000s on your roof... be my guest.
[2010-01-14 17:27:40] mattkrunchie - So, in short having ...So, in short having the Generator ( Solar PV ) in close proximity to the load ( Washing Machine, Air Con, etc..) will reduce energy loss in transmission. PV is not cheap but it is one of the few things you can install on your home which has the potential to pay for itself.
[2010-01-14 17:27:00] mattkrunchie - Also there are huge ...Also there are huge efficiency losses in the grid 50% is lost just in transmission and if you count the energy used to construct and operate the power plant producing the energy whether it be Nuclear or Coal its more like %80 - %90 ! is lost.
[2010-01-14 17:23:31] mattkrunchie - Simple - to use the ...Simple - to use the space on your roof to collect energy. The source of the energy coming from the grid has many hidden costs and in the U.S is heavily subsidized. I believe we are going to have to pay for these hidden costs in the future whether it's health care for kids with asthma ( this is a huge problem now in the city I live in ) as a result of pollution , rising sea levels causing people to move or extreme weather patterns to name a few.
[2010-01-14 16:53:24] robz40 - The WM was an ...The WM was an example. google Common Wattage of Household Appliances I personally fail to see why many people should use PV to supplement their electricity. Why spend thousands on PV when they are connected to the grid anyway?