How solar panels cost?

!±8± How solar panels cost?

Production of small electronic devices powered by the sun began in the early '70s. Today's solar cells are able to provide the United States. "Recruit" in the sun until about 4000 billion kWh to the needs, it would be necessary, the solar panels with an area of 32 000 sq km, which is equal to the area of military training area in Nevada for the installation.

Sun's rays fall on the surface of silicon solar cells for energy. It depends on the amount ofLight falling on the plate. More light, more energy can be generated. Energy into electricity (direct current, DC) can be used in thousands of species, light the lamp for the provision of laptop computers. This is obviously a very simplified, but fully functional. To apply in practice, we need more accessories, such as voltage regulators, batteries, waste of energy, inverters, etc.

The advantages of the solar system are as follows:
- No moving parts
-Very low operating costs,
- Ease of installation,
- Safe, low voltage installation
- Easy to control.

The only drawback is the relatively high price of solar panels. A 150 watt panel will cost between 600-800 dollars, depending on how much we buy. How you can quickly determine, in full sun, so that the panel, but two 75-watt bulbs can be assigned. The cost of installation of control devices and batteries are added.

Fortunately, the government helps in curingthe investment cost. In many states there are programs available to finance the construction of local solar, wind or hydroelectric energy sources. In the State of New York reach $ 4.5 per watt to install solar collectors granted. In New Jersey, depending on the size of the structure, up to $ 5.5 per watt. This is an opportunity for interest-free loan and 25% of the tax return. Thanks to all of the above can be reduced by 60% of the cost

An example:

3-kilowatt systeminstalled by a specialist (about $ 8 per watt): 24 000 dollars.
Was paid $ 4 per watt: $ 12 000.
Installation costs: $ 10,500.
Tax refund of 25%: $ 2,625.
The final cost: $ 9375.

There is still a large amount of money, is not it?
Why pay as much as you can to build their own solar panels?
This article is about the solar panels at home, I'll bet that, asIdea:
http://www.squidoo.com/using-solar-energy-a-cure-to-high-energy-bills