Abstract:
When solar system was not invented there was no idea about renewable energy. But still that time scientist are try to discover something which is related to renewable energy. At the very first time French physicist Edmond Becquerel in 1839 invented the photovoltaic effect when he research with a cell made of metal electrodes in a conducting solution. He saw that the cell provides electrical energy when its exposed on light.
Later in 1873 Willoughby Smith saw that selenium have a function of photoconductor.
In 1883, American inventor Charles Fritz first time discovered modern solar system. From that time until now every researcher try to implement modern solar system.
Solar energy has brought a massive change with us. Previously solar (PV) technologies were divided into smaller parts. It currently produces a large amount of electricity as it is connected to the grid. The price of solar technology is slowly coming down a lot compared to the previous 30 years. For example, the cost of high power band solar modules has decreased from about $27,000/kW in 1982 to about $4,000/kW in 2006.
The installed cost of a PV system declined from $16,000/kW in 1992 to around $6,000/kW in 2008 (IEA-PVPS, 2007; Solarbuzz, 2006, Lazard 2009). The rapid expansion of the solar energy market can be attributed to a number of supportive policy instruments, the increased volatility of fossil fuel prices and the environmental externalities of fossil fuels, particularly greenhouse gas (GHG) emissions.
