Solar PV

Photovoltaic systems are solar energy systems that produce electricity directly from sunlight. Photovoltaic (PV) systems produce clean, reliable energy without consuming fossil fuels and can be used in a wide variety of applications. A common application of PV technology is providing power for watches and radios. On a larger scale, many utilities have recently installed large photovoltaic arrays to provide consumers with solar-generated electricity. Today, solar modules supply electricity to more than 1 million homes worldwide.

Conventional fuel sources have created a myriad of environmental problems, such as global warming, acid rain, smog, water pollution, rapidly filling waste disposal sites, destruction of habitat from fuel spills and the loss of natural resources. PV systems do not pose these environmental consequences. Today, the majority of PV modules use silicon as their major component. The silicon cells manufactured from 1 ton of sand can produce as much electricity as burning 500,000 tons of coal.

Economists have predicted that photovoltaic will be the most rapidly growing form of commercial energy after 2030, with sales exceeding $100 Billion. In fact, the use of solar and renewable is expected to double between 2006 and 2010. It should come as no surprise that this clean, reliable source of electric power is regarded as the future of energy production.

Advantages of Photovoltaic technology:

• Reliability
• Durability
• Low maintenance cost
• No fuel cost
• Reduced sound pollution
• Scalability
• Safety
• Independence
• Electric grid decentralization

Disadvantages:

• Initial cost
• Variability of available solar radiation
• Energy storage
• Efficiency improvements
• Education

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