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Solar Energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar energy technologies include solar heating, solar photovoltaic, solar thermal electricity and solar architecture, which can make considerable contributions to solving some of the most urgent problems the world now faces.

In 2011, the International Energy Agency said that “the development of affordable. Inexhaustible and clean solar energy technologies will have huge longer-term benefits. It will increase countries’ energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability, reduce pollution, lower the costs of mitigating climate change, and keep fossil fuel price lower then otherwise. These advantages are global. Hence the additional costs of the incentives for early deployment should be considered learning investments; they must be wisely spent and need to be widely shared.

The solar power plant consists of three major components

1. Solar PV module (Solar Panel)

2. Solar Inverter

3. Solar Battery

1. Solar PV module (solar Panel)
Photovoltaic systems (PV systems) use solar panels to convert sunlight in to electricity. Solar system is made up of one or more solar panels. A photovoltaic array is a linked collection of solar panels. Most PV arrays use an inverter to convert the DC power produced by the modules in to alternating current that can power lights, motors and other loads.

2. Solar Inverter
A solar inverter or PV inverter is the heart of any solar power plant and assumes the task of efficiently converting the direct current generated by the solar PV module to alternating current. This alternating current is used in powering our homes, offices, institutions and industry. Generally solar inverters are of two type’s off-grid inverters and on grid inverter.

2 - A. Off- Grid inverter
These inverters draws its direct current(DC) power from Batteries which are charged by photovoltaic (PV Arrays).In off grid system the batteries are used for reserve back up. Wherever independent off-grid power is required for Domestic and Commercial purposes the Off-grid inverter is a cost effective replacement for a diesel generator.

2 - B. Grid tie inverter
A solar grid tie inverter converts the variable direct current output of photovoltaic (PV) solar panel into utility frequency alternating current that can be used locally or fed into a commercial electrical grid, it does not need battery backup. The benefit of grid tie inverter depends having NET METERING in your area.

3. Tubular Batteries For Solar
A Battery is a essential part of an Off-grid solar system. They are where your power is stored-Your Reservoir. A battery storage bank is what allows your power system to deliver a constant level of power to your electrical loads. The right choice of the size, type and number of batteries is important to ensure your power system perform properly and to maximize the life of batteries. The sizing of your battery bank depends upon the number of appliances and the amount of power they take.

 
NEWS & EVENTS
NEW DELHI: India will build the world's largest solar plant to generate 4,000 mw from sunlight near the Sambhar lake in Rajasthan that will sell electricity at an estimated rate of Rs 5.50 per unit.
The proposed solar project's capacity is about three times India's total solar power capacity and comparable with coal-fired ultra mega power projects of Tata Power and Reliance Power. "Being the first project of this scale anywhere in the world this project is expected to set a trend for large scale solar power development in the world," a government statement said.
 
It would be set up and run by a joint venture of five public sector utilities Bhel, Powergrid Corporation of India,Solar Energy Corporation of India, Hindustan Salts limited and Rajasthan Electronics & Instruments Limited, the statement said.