Solar energy

solar energy is developed all the time and it's a great chance to save money, but it depends what are your needs. the problem with solar system is the high fixed cost, you will pay a lot now but save more money in the future. if all you need is  electricity at your house, I recommend you to wait till it will be cheaper. but if you have a factory or something like that, you may consider that option.

if you want you can read more about solar energy here   

Hi Yedazen

As for today-technology's-level, the cost of every watt is too hige for use in usual everyday needs.

For further reading I suggest the following:

http://www.history.rochester.edu/class/solar/solar.htm

http://www.energyquest.ca.gov/story/chapter15.html

It will cost you money in the short run, but in the long run you'll make it back and then the energy will be free.  I am personally involved some solar car projects.  There is a lot of hope to make them an efficient source fuel.

 http://www.futurecars.com/futurecars/solar_cars1.html

Solar energy will save you money--and probably lots of it over time, especially as electricity prices continue to rise.

Here's an example. Solar powered fans are very popular right now, especially solar powered attic fans. Initially they do cost more than electric fans, but they're very easy to install, since you don't have to worry about electrical outlets or wiring.

Once a solar powered fan is installed in your roof or gables, it runs for free. And it runs strongest when you need it the most--when the sun is heating your house up.

So now your air conditioners don't have to work as hard, which lowers your electric bills. And having solar powered fans will add to the value of your house.

So solar powered fans can save you money in three ways. 1) they work for free 2) they lower your electric bills and 3) they add value to your house.

To read more about the different kinds of solar fans and where you can buy them online, check out Solar Powered Fans.

With regard to producing usable transportation fuel from solar energy, there are two systems:

• Concentrating Solar Power (CSP): in this system, reflective materials concentrate the sun’s energy, creating high temperatures. The corresponding heat powers a generator which converts it to electricity.

• The advantage to this somewhat inexpensive option is that the derived power could be used in electric cars and hydrogen fuel cells. However, this system contributes some pollutants into the atmosphere because it uses fossil fuels such as natural gas.

• Photovoltaics (PV):Photovoltaics use cells (think solar panels) to convert solar energy directly into electricity.

• To that end, the advantage of PVs is that they are likely to be on-board vehicle power sources with zero emissions. The chief disadvantage is that currently, PV cells are very inefficient, capable of converting only about 15% of the solar energy they receive into electricity.

Solar Energy