The energy resources of the world are diminishing with each breath of Carbon Dioxide, Sulphur Dioxide, Carbon Monoxide and many of such hazardous gases which leave the chimneys and the exhausts of our vehicles. The panic aggregates when this poison affects the health and the well being of all living beings.Various alternate sources of energy preferably renewable are being worked upon and but their full scale utilisation and commercial use is still debatable.
Out of all the energy alternatives,solar energy has stood out as a concrete, dependable feasible and environment friendly way to meet the growing energy demands. Solar panel electricity systems, also known as solar Photovoltaics (PV), capture the sun's energy using Photovoltaic cells. These cells don't need direct sunlight to work – they can still generate some electricity on a cloudy day. The cells convert the sunlight into electricity, which can be used to run household appliances and lighting. PV cells are made from layers of semi-conducting material, usually silicon. When light shines on the cell it creates an electric field across the layers. The stronger the sunshine, the more electricity is produced. Groups of cells are mounted together in panels or modules that can either be mounted on your roof or on the ground.
India is densely populated and has high solar insolation, an ideal combination for using solar power in India. Moreover, it's other energy resources are relatively scarce. In the solar energy sector, some large projects have been proposed, and a 35,000 km2 (14,000 sq mi) area of That Deserts has been set aside for solar power projects, sufficient to generate 700 to 2,100 GW.
India is planning to install the World's largest Solar Power Plant with 4,000 MW Capacity near Sambhar Lake in Rajasthan. The states of Rajasthan, Madhya Pradesh, Gujarat and Maharashtra have been able to utilise the solar energy to meet some part of their energy requirements. Solar power panel utilisation has found a particular acclamation in the far off areas of Ladakh where the transportation and production of energy is difficult.
For Domestic consumption Government of India promotes solar energy consumption under Jawaharlal Nehru National Solar Mission.They also provide subsidy to people buying solar panels under this scheme.
Cost of a PV module (just the panel) costs anywhere between Rs 30 to Rs 60 per watt of power generated (depending on the quantity you are buying). A good imported module will cost around Rs 40-45 per watt (for bulk transactions, not for retail). Good ones manufactured in India would come as low as Rs 30-32 per watt (for bulk transactions, not for retail). Please note that this is the cost for the panel and in case you are looking for inverter and batteries, the cost would be additional. A good 5 kW system for a home would cost around Rs 5-7 lakhs to setup (at retail price of around Rs 50-60 per Wp) , which can provide electricity for 25 years.
The additional operating cost will include the cost of replacing the batteries.
Solar panels are the pioneers in the national energy production and consumption and have helped to penetrate the use of solar energy not only commercially but also for domestic purposes. The world today faces an energy crises and it is time we embrace the solar alternatives to meet the increasing energy demands.