10 Good Reasons to switch to solar photovoltaic electricity
10 Good Reasons to switch to solar photovoltaic electricity
Photovoltaic is emerging as a major power source due to its numerous environmental and economic benefits and proven reliability.
Photovoltaic' is a marriage of two words: photo', from Greek roots, meaning light, and voltaic', from volt', which is the unit used to measure electric
potential at a given point.
Photovoltaic systems use cells to convert solar radiation into electricity. The cell consists of one or two layers of a semi-conducting material. When light shines on the cell it creates an electric field across the layers, causing electricity to flow. The greater the intensity of the light, the greater the flow of electricity is.
The most common semi conductor material used in photovoltaic
cells is silicon, an element most commonly found in sand. There is no limitation to its availability as a raw material; silicon is the second most abundant material in the earth's mass.
A photovoltaic system therefore does not need bright sunlight in order to operate. It can also generate electricity on cloudy days. Due to the reflection of sunlight, slightly cloudy days can even result in higher energy yields than days with a completely cloudless sky.
10 Good Reasons to switch to solar photovoltaic electricity:
1 The fuel is free.
The sun is the only resource needed to power solar panels.
And the sun will keep shining until the world's end. Also, most photovoltaic
cells are made from silicon, and silicon is an abundant and nontoxic element (the second most abundant material in the earth's mass).
2 It produces no noise, harmful emissions or polluting gases. The burning of natural resources for energy can create smoke, cause acid rain, pollute water and pollute the air. Carbon dioxide CO2 , a leading greenhouse gas, is also produced.
Solar power uses only the power of the sun as its fuel. It creates no harmful byproduct and contributes actively to reduce the global warming.
3 PV systems are very safe and highly reliable.
The estimated lifetime of a PV module is 30 years. Furthermore, the modules' performance is very high providing over 80% of the initial power after 25 years which makes photovoltaics a very reliable technology in the long term. In addition, very high quality standards are set at a European level which guarantees that consumers buy reliable products.
4 PV Modules can be recycled and therefore the materials used in the production process (silicon, glass, aluminium, etc.) can be reused.
Recycling is not only beneficial for the environment but also for helping to reduce the energy needed to produce those materials and therefore the cost of fabrication.
5 It requires lowmaintenance.
Solar modules are almost maintenance-free and offer an easy installation.
6 It brings electricity toremote rural areas.
Solar systems give an added value to rural areas (especially in developing countries where electricity is not available). House lighting, hospital refrigeration systems and water pumping are some of the many applications for off-grid systems. Telecommunication systems in remote areas are also well-known users of PV systems.
7 It can be aestheticallyintegrated in buildings (BIPV).
Systems can cover roofs and facades contributing to reduce the energy buildings consume. They don't produce noise and can be integrated in very aesthetic ways. European building legislations have been and are being reviewed to make renewable energies as a required energy source in public and residential buildings. This fact is accelerating the development of ecobuildings and positive energy buildings (E+ Buildings) which opens up many opportunities for a better integration of PV systems in the built environment.
8 The energy pay-backtime of a module is constantlydecreasing. This means thatthe time required for a PV moduleto produce as much energy as it needsto be manufactured is very short, it variesbetween 1,5 years to 3 years. A module therefore produces 6 to 18 timesmore energy than is neededto manufacture it.
9 It creates thousandsof jobs. The PV sector,with an average annual growthof 40% during the past yearsis increasingly contributing to the creation of thousandof jobs in Europe andworldwide.
10 It contributes toimproving the security ofEurope's energy supply. In orderto cover 100% of the electricity demandin Europe, only the 0.7% of the totalland of Europe would be needed to beconverted by PV modules. ThereforePhotovoltaics can play an importantrole in improving the security ofEurope's energy supply.
10 Good Reasons to switch to solar photovoltaic electricity
By: yoni levy
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