India is lucky to receive solar energy for greater part of the year. It is estimated that
during a year India receives the energy equivalent to more than 5,000 trillion kWh.
Under clear (cloudless) sky conditions, the daily average varies from 4 to 7 kWh/m2.
The solar energy reaching unit area at outer edge of the earth’s atmosphere exposed
perpendicularly to the rays of the Sun at the average distance between the Sun and
earth is known as the solar constant. It is estimated to be approximately 1.4 kJ per
second per square metre or 1.4 kW/m2.
during a year India receives the energy equivalent to more than 5,000 trillion kWh.
Under clear (cloudless) sky conditions, the daily average varies from 4 to 7 kWh/m2.
The solar energy reaching unit area at outer edge of the earth’s atmosphere exposed
perpendicularly to the rays of the Sun at the average distance between the Sun and
earth is known as the solar constant. It is estimated to be approximately 1.4 kJ per
second per square metre or 1.4 kW/m2.
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