Attaching Solar Panels To Roof

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FAQ

Im looking at making a self build iPad solar panel charger, Is it possible to get a small solar panel, a battery to hold charge and then a USB output? nothing fancy, just power in and power out?

Yes you can. You would need to look up and see the voltage output by a USB port and the current rating. You should be able to find it on the web. I have found it in the past. Check several sites to make sure that you have the correct values. Then wire up the solar panels to get the correct voltage and current capabilities. You may need to learn how a LM7805 works and wire one of them up to the circuit if you can't wire the solar panels to get the correct voltage. Make sure that you protect the solar panels from the weather and have some kind of protection for your iPad so that it does not get rained on and ruined.

So lets say that Everyday I use ,280 kWh. How many 250 watt solar panels would I buy so that I don't need to buy electricity anymore. Sorry if this sounds stupid, I am doing research on why american homes should become more cost efficient.

Everyday I use ,280 kWh 280 kW-hour / 24 hours = 470 kW WOW, that is a very high power level, most homes use an average of .2 kW. My guess is that you mean you use 280 kW-hour in a year, which comes to an average power of .3 kW, typical. Assuming you get, worse case, 6 hours of sun per day, for the first case, 470 kW, each solar panel generates the equivalent of 250 x6/24 = 60 watts, so you would need 470k/60 = 8000 panels For the second case, .3 kw or 300 watts, divided by 60 that is about 20 panels. Depending on where you live, you could need as much as twice that number. Plus you need charge controller, lots of expensive batteries, and an inverter. The big problem is periods of no sun. If you demand continuous power, and you have a period of, say, 24 hours with no sun because of storms, etc, then the number of batteries increases to the hundreds.

My house is aligned exactly North-South, so I have no roof facing South. Is it worth installing solar panels? Are there any good options for dealing with this situation?

The answer is NO. We can install PV solar panels to properties that are South East – South West facing. Of course it helps if you are 00% South facing but it’s not the end of the world. In fact I would say that the majority of solar panel installations across Britain are not 00% South facing.

i am very new to the solar world and i need help with some stuff to understand what i need to do.what AH battery should i use? i am planning on getting a 2V deep cycle gel based battery but i want to get the most power for my system so should i use something like a few 00AH in a battery bank system or a bunch or 50 or so amp hour batteries in a bank. also what kind of power am i looking at for the best battery system. in other words what kind of basic appliances like lighting, laptop,space heaters etc can can i run on the selected battery system and for how long? any help would be highly appreciated.

This site has some good info and links to more info about renewable and alternative energy. Hope it helps you. Good luck.

Yes, solar panels can be used on boats or marine applications. In fact, they are becoming increasingly popular for providing renewable energy on board boats, yachts, and other marine vessels. Solar panels can generate electricity to power various onboard systems, including navigation equipment, lighting, refrigeration, and charging batteries. They are a sustainable and efficient way to harness solar energy while minimizing reliance on traditional fuel sources.

I am starting to think about solar panels as an option for my home. I have done some research on panels, to be honest its all very confusing. There are many different panels some with 60 watts some all the way up to 20 watts. My household currently uses about 2700 to 3400 kWh every two months. So based off of my power usage maybe you can answer some of the following questions:What kind of panels should I be looking at?Which panel manufacturers give the best bang for the buck (reliable/affordable)?Anything else I should be concerned about?I am just starting out in educating myself on solar power so please excuse me if I sound very naive. Any information that you may have will be helpful. Thanks in advance.

I'm not an expert, but I recently went through the process and now have a system on my home. I got 3 quotes from 3 licensed contractors and they all seemed to be about the same, the prices seemed to be based on the amount of energy they produced. In CA and I'm sure everywhere else they are tested by an independent agency which rates the output of the panels. You seem to have similar usage as my house, I got a 3.75kwhdc unit, it isn't expected to eliminate my bill, but it should reduce it by quite a bit. I've only had it for a few months and it took me from about 45 kwh per day to around 0. I know I'll have lower output in the winter, but my usage is lower in the winter as well. I decided on this size unit to maximize my rebates and I can take advantage of my utilities rebates when I add to the system in a few years. The difference between panels seemed to be how big they were. Some systems can be twice the size and produce the same amount of energy. I put a couple links below that I found helpful. The roseville pv buy down program has some great links that give information about specific systems.

I'm writing a lab and I have to put information about solar panels in it. The history, who started them, why they are useful etc. any good sites that can help me?

just type in solar panels and go to wikipedia theres a ton of information good luck!

i see these things all over the internet on how to make 'home made solar panels' but all of them require you to buy the solar cells and nothing tells you how to make your own. So how can you make your own solar cells?

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