Introduction to Solar Power

Solar power is the main source of energy for theelectrons leave there position they form a hole.
humane beings. Life on earth cannot exist withoutWhen many electrons leave the surface, this
solar energy. This energy is completely free forcreates a negative and positive voltage potential
the human beings to consume and is alsosimilar to that of the terminals of the battery.
environmental friendly. Solar energy is nowWhen this surface is connected with external
considered to be the biggest alternative of thedevices they produce electricity.
current source of producing electricity. The mainSolar cells don't produce too much power out.
reason is that sources like burning fuel, coal, gasThese cells are connected to modules which form
or nuclear energy to produce electricity isarrays. These arrays can be made up of ten or
becoming expensive and also is very harmful tohundreds of modules each one producing a
the environment. But solar energy on the otherconsiderable amount of energy. There is no
hand is completely free and very effective. Werestriction on the amount of modules; you can
have only been able to harvest 1-3 percent ofconnect as many as you want to according to
the solar energy that comes to the earth. If weyour need. The performance of these modules
look at the figures we find that.depends upon the amount of sunlight, weather
1. The total amount of earth reserves responsiblecondition and location of the panels. The energy
for producing energy are equivalent to only 20provided by these modules is in DC form and can
days of sunlight.only run small appliances but if you need more
2. 40 minutes of sunlight if harvested completelypower than an inverter is connected to the
can produce energy for the entire planet for amodules which converts this DC power into AC
time period of 1 year.power. Initially these cells were made to provide
3. We are only harvesting 2-3 % of this energyelectricity in remote areas but now they are even
which isn't very good.used for providing electricity to residential and
Solar cells or photovoltaic cells are used tocommercial areas.
convert solar energy into electricity. These cellsSolar cells are also long life lasting, having a low
are basically made up of silicon alloys and are oncost and are environmental friendly as they don't
panels which capture energy form the sun.produce a by products. Use of solar power is also
sunlight contains photons which when hit thevery effective way for generating electricity. You
surface of the cells gets reflected pr absorbed,are using natural source of energy to fulfill you
these absorbed particles are the one responsibleown needs. As time will pass solar power will
for providing you with the energy. When morebecome the main source of energy for the
photons hit the surface they allow the materialshuman beings.
surface atoms to release electrons. When these