Construction of the solar panels can be a fun and interesting project, but it is important to understand that you have to deal with. The homemade built panels should be used for small applications, such as, for example, to provide light for a building, powering small electronics etc., If you want to build a high voltage/current solar panels in attempt to provide electricity to your home or a larger project, this is not to recommend. Here is why:
for the First, homemade solar panels don’t last as long and you will see the efficiency decrease in a shorter period of time. The manufacture of the solar panels that usually comes with 25 year warranty and last much longer than the homemade panels (25 years).
solar panels in the Home do not have the correct certifications to qualify for state and federal tax deductions. Without these certifications, you would not be compatible with the building/electrical code or insurance companies. It would take thousands of dollars and several months to get your panels listed by a NRTL(Nationally Recognized Laboratories).
It can be a fire hazard. You should never put high-powered, homemade panels consisting of wood and/or plastic over your home, or flammable materials. Would you like to mount them on the bare ground, a concrete surface, etc
An alternative for off grid or other solar projects is getting damaged solar panels. These panels have small blemishes that do not really affect the production of the panels. You can get this type of panels for $ 2.50/w up to $ 4/w including a 25-year warranty. These types of panels are not UL listed. The prices of commercial, UL listed solar panels go for $ 4 to 5 per watt.
Here is a post in the sun electric website on this topic:
“the Problem with Making Your own Panels. To build your own solar panels can be fun and exciting. But if you want to operate your building in solar energy, it is best to purchase manufactured panels. The cost of materials, time and labor it will cost you more than if you buy a panel that is already guaranteed to produce more than 40 years with a warranty of 25 years. With a panel manufactured you do not know exactly what you will get and you will know that the panel works properly. In the end, you will pay more and get less energy and life.”
A solar thermal (heating) DIY would be worth looking into if your itching for a solution to the sun. Solar heating provides cost-effective hot water and reduce the need for gas or electricity to heat water. Is it cheaper to build a solar-thermal system, and, in general, an easier task. In addition, the payback period for solar energy is faster than solar energy systems.
finally, don’T PAY for those DIY Solar panel Guides you see polluting the Internet! Your better to just go to a solar forum and learn for free.