10 reasons to switch to solar energy

1. Reliability

It's a perfectly mature and proven technology.

2. Decentralization

The thermal energy produced at points of demand. This avoids the huge transmission losses through the electricity network.

3. Autonomy

Avoid huge expenditure on imported energy and insecurity due to dependence on imported energy resources. 70% of energy consumed, when the sun is free and there everywhere.

Solar Energy The New Era

"Turning to the sun and let the shadows behind you" (German proverb)

Solar energy is clean, inexhaustible, renewable, and mild. The sun is not controlled by anyone and is an inexhaustible domestic resource, which provides independence, security and predictability in energy supply.

There are two ways to build one solar power.

* Producing solar electricity through photovoltaic systems.
* Taking advantage of the warmth of the sun for heating, cooling and hot water with solar thermal systems.

For two decades the Greek consumers are familiar with solar panels for hot water. But that ignores the majority of consumers are not only technological improvements in solar thermal systems for heating water, but most other uses of solar technologies such as space heating, district heating housing, solar air conditioning and solar thermal electricity generation.

Photovoltaic Effect

The photovoltaic phenomenon described as the polarization of electrical charges occurring in certain materials when exposed to bright light. This occurs in the natural elements in the group of semiconductors and semiconductor devices to artificial. The polarization of electrical charges translates as creating potential difference generated between the poles, ie a rudimentary electric generator.

Colorful, we could liken the photovoltaic generator as a non-return valve electrons, whereby the electrons can pass only to one direction. So when I happened to hit a photon on an electron of the material, then the broadcast of its energy, causing it to "hurl" from the rest position. If now the direction we will take the "Flying" electron coincides with the direction of electron valve then it will shift in relation to its original position and trapped there after the valve prevents the return to the starting position. Accordingly, we find that in a "side" of the material (hand entrapment) will have an excess electron and the other side (side eksfendonismou) will have an electron deficit, which implies a difference of electrical potential.

More intensity (as looking at material which has the status of non-return valve) depends on three main factors: (1) the availability of electrons "can fly away (electrical properties of the material), (2) the likelihood of conflict photon-electron (statistical probability) and (3) the ability of the conflict to give the appropriate electron velocity and direction to switch on the side traps (also statistical probability). From these dependencies, it is understood that a small percentage of the light irradiation takes place in the photovoltaic effect.

Photovoltaic Systems

Photovoltaic systems are devices utilizing solar radiation, producing electromotive force (ie, become electrical generators). A photovoltaic system consists basically of photovoltaic panels, configuration management and control and of course the necessary cabling and transmission coupling. Photovoltaic systems can be grid or grid, depending on whether or not coupled with the national electricity grid. In the case of the photovoltaic system, is usually necessary and the availability of means of energy storage (batteries) to power availability during non-sunlight (night, cloudy days).

The development of photovoltaic systems is initially placed in the middle of last century (1950) arose when service needs of applications of space technology, while after 1970 the first steps in place for the use of PV in more everyday applications, something that helped and oil crises 1973 and 1979. Nowadays (2009), the Photovoltaic Technology has managed to produce several PV systems affordable for even small investors, which in combination with social sensitivity and the shift to renewable energy sources, making fruitful the rapid proliferation of applications of PV with a direct impact on micro-and macroeconomics, management of natural resources and our environmental performance.

Solar Energy Technology

Active use of solar energy to serve human needs goes back to the dawn of human history where, directly or indirectly were operated mainly thermal energy to support daily activities.

Today, there is widespread use of the known solar collectors to heat water (solar water heaters) and rapidly evolving systems convert sunlight into electricity (PV).

Less known are the applications of solar systems that include Natural Illumination (Solatube ®), the Concentration of Solar Energy (systems CSP), the Photocatalysis (production of fuel cells for energy).


If we exclude applications Condensed Photocatalysis and Solar Energy - currently on station facilities and specialist interest and increased size - other forms of exploitation of solar energy is not only possible but also an ideal solution for the energy requirements of households and many professional and charitable buildings and facilities.

Solar Energy is free for ever

The term solar energy we mean all forms of energy emanating from the sun. The most common form of solar energy is the Light and Heat. But there are lesser-known forms, including the general description of electromagnetic energy.
The sun as an energy source is inexhaustible and therefore limitless is the energy that comes from him. Also, solar energy as a physical act is classified as a Renewable Energy in the sense that it is destructive to the earth's surface as long as these natural processes operating in Earth's atmosphere and propitiate the Solar Radiation and still function perfectly well apart from any physical or human impact.
In addition, the Solar Energy is jointly-owned and-shared in the human population since the flow to each of us is indiscriminate, unhandled and above is FREE.

Solar Energy

The existence of life on earth is due to the sun. The plants for photosynthesis, need sunlight. Herbivores eat plants, carnivores to herbivores, so it all depends on the sun. The man operating the solar energy using solar batteries, panels of solar cells and giant mirrors. This heated water and generate electricity. The exploitation of solar energy has many positive features, why would there forever and does not infect all the earth's atmosphere. The solar equipment but very expensive.

One way to exploit the solar energy are solar batteries. Currently used mainly for power generation on satellites, because they have very large cost. The solar batteries are made from silicon. Silicon is a semiconductor and if enriched with some other relevant information, allowing the flow of electrons. A solar cell consists of two layers of silicon, one enriched with positive ions and one negative. When sunlight falls on the surface, electrons are released and collected by a network of pipelines that exist on both surfaces. When you connect the item with an electrical circuit, electrons move from negative to positive surface generating electricity.