Solar

harbor freight solar panel kit how to. fully charges a 12volt battery in about 8 hours of good sun.

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150 watt pv panel will produce 150 watts of power at 150 watts per month, week, day, hour, minute?

if it was by the hour then a five hour best sun day would produce 150 watts times 5 hours equiling 750 watts per day if i;m correct

A 150 watt PV panel will give you 150 watts peak production at maximum exposure to sunlight. If you have a 5-hour solar day, yes, this gives you 750 watt-hours. Please not the watt-hour is a different ritter than the watt; i recommend you Wikipedia both to learn more

But, in a nutshell, the watt is the amount of work that can be done Right Now! whereas the watt-hour is a calculation of how much we’ve consumed over time.

Size your solar panel (PV) system required to eliminate your electric bill and GO GREEN. Solar electric, photovoltaic, solar power, solar energy, iPhone, Blackberry, software application.

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My husband and I would like to build a solar panel (PV) on our small farm to learn the basics. We don’t want to pay thousands of dollars to buy a panel that may be obsolete in a few years. The homemade versions sound to good to be true. Are they just scams?

This is generally considered a scam site according to the links below.

No address/phone number.

No response to emails.

They recruit affiliates, in a pyramid-like scheme.

http://www.ripoffreport.com/reports/0/373/RipOff0373972.htm

http://www.wind-sun.com/ForumVB/showthread.php?t=3793&highlight=earth4energy

Just being logical, if it really worked, why would they need to recruit affiliates? And if someone could make a panel at home for $200, with modern manufacturing techniques, wouldn’t a commercial one be about the same price?

If you do decide to go for it, be sure to use a real credit card for the purchase, so you can pull back the funds through your credit card company if not satisfied. Reviews on sites that are independent of the product assert that these companies do not honor their guarantees.

with regular intensity, PV solar panels

http://upload.wikimedia.org/wikipedia/commons/2/28/EU-Glob_opta_presentation.png

UK london area(south east)

There are a number of factors that you will need to take into account:

a) Panel efficiency – efficiency can range from 5% to 20%, better effcient = more cost
b) location of panels – need to be south facing
c) location in the UK – check how much irradtation your home receives
C:\Users\wmorris\Documents\Biggreencompany\Big Green Company\Marketing folder\Solar energy showroom\Tools – Nottingham Energy Partnership.mht

Also you can check if your home is suitable for solar http://www.biggreencompany.co.uk

Are you asking about making your own solar panel? It is very difficult to make a solar panel. There are some web sites that show you how to make a wet solar panel just for the fun of it, but the efficiency is abysmal. Even commercial solar panels range from 5% to 15% efficiency. Supposedly, the best commercially available panel is 21% efficient. There are some research panels that are reported to be in the 40% range, but they are not available for commercial even if you could afford it.

Then for commercial panels, in decreasing order of efficiency there are:
monocrystaline panels
polycrystalline panels
and amorphous silicon panels

I lived for 2 years in a remote area where my only electricity came from a wind generator and 2 monocrytalline panels. My panels were abut 3 sq ft area each and they were 50 watt panels. (about 15% eff.)

Polycrystalline panels of the same size would yeild around 25-30 watts.

Amorphous silicon panels of the same size would yield around 5-15 watts.

This video was shot using concentrated moonlight only. We managed to get 1 volt out of a solar panel at 2AM.

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Anyone convert some or all of their home/business to solar energy and what did it cost there? what region of egypt? what companies sell solar panels in egypt?

There Are Solar Heaters In Egypt!! Great Now I’m Going Green! yay!!

Now I know that many would say we should do it out of principle, but I’m only going to do it if it actually pays off. I’m all about taking care of the earth God gave us, but I have to be practical until I’ve got a few more bucks to play with.
SO… What is the most cost effective solar energy source for a single family home, and how long before I can expect it to pay for itself.

I also realize, of course, that there are a lot of variables in here, the biggest of which is the efficiency of the home itself. Efficiency upgrades are the first steps we are looking to take, but I am interested in PV technology as well.

Thanks!

In general solar thermal applications will pay for themselves faster than solar photovoltaic panels. This is because although photovoltaic panels in the lab have achieved efficiencies of around 40%, the ones you buy only achieve around 14%. Solar thermal panels can be 60 to 80% efficient. The technology is hundreds if not thousands of years old and much cheaper. The solar thermal vacuum tube collectors will work on cloudy and cold days.

But governmental and utility incentives help to bring down the payback period of photovoltaic as well. In general the more use you make of a photovoltaic system the quicker the pay back period. So it may not be cost effective to put in a geothermal heat pump and power it with photovoltaic. Cheaper electric resistance heat seems to work better.

With solar thermal cost will rise as you go from 80% to 100% usage. Depending upon the alternatives an 80% capacity system may pay back better than a 100% system.

Solar thermal:
Hot water systems can have pay back periods of 3 years or less.
solar heating applications may have a pay back period of 7 years or less.
Solar air conditioning is the latest entry into the solar thermal field and I have not yet seen payback numbers on this.

Photovoltaic:
Payback periods of 10 to 20 years are not uncommon.
Using an electric car helps to lower the cost as does time of use metering with the grid as a "storage device." Below is an interesting article about the payback of a photovoltaic system that helps give the tesla roadster a 72 mile range using solar electricity alone.

I point out the details of a Kaneka 60 watt PV solar panel.

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