Interesting Facts on Solar Energy

Fortunately, more information is becoming available through conferences, seminars, news items, etc., and people can educate themselves via the internet if they’re willing to make the effort.

In the meantime, here are some interesting facts on solar energy that may give you food for thought.

-The sun provides more power in one day than the entire human race uses in whole year.

-Solar electricity is generated from the light  of the sum, not the heat. Solar panels consist of a series of solar cells, and the solar cells work on the photovoltaic effect, in which sunlight reacts with certain materials, in this case silicon, to generate an electrical charge.

-A group of panels is known as an array.

-Electricity generated by solar panels is direct current (DC). Homes connected to the grid use alternating current (AC), so solar electricity must be converted from DC to AC before it can be used in homes.

-Since solar panels are modular, a home owner living on the grid can choose to start with a small system, supplying only a percentage of the electricity they need, and later add panels to increase the am electricity coming from solar.

-Net metering allows home owners connected to the grid to feed solar electricity into the grid when not needed for withdrawal later, a bit like having an energy bank. The utility will pay for any unused electricity.

-Solar panels are very durable and carry warranties of up to 25 years.

-Solar panels are very sensitive, and any kind of shading from buildings or the over hanging branches of trees can seriously reduce the efficiency of the panels.

-If you live in the Northern Hemisphere, PV (Photovoltaic) panels should ideally be placed facing south to make the most of the available sunlight; in the Southern Hemisphere, the reverse is true.

-PV panels generate electricity even in cloudy conditions, even though the rate of production is reduced.

-If you live in a remote location several miles from the nearest utility, it can cost up to $20 per foot to run power out to your location, so going solar would probably be a cheaper option, especially in the long-term.