Sunday, October 21, 2012

Solar power, the cost factor

Commercial tariff for grid power: Rs.6 - Rs.8 per unit:
Disesel generator back-up - Rs. 16 - Rs.18
Solar power - Rs.10 a unit.
So says Solkar Solar MD, Mr K E Raghunathan. He is quoted in media as saying,  some 60 sq.ft space is required for one kW rooftop system, capable of producing 5 units on a fair weather day. 
A solar photovoltaic power plant, with a capacity of one kilowatt, has been up and running for some months at a Kilpauk residence of Mr D Suresh.
He has 10 solar panels; a dual power converter, along with 10 batteries of 100 ampere-hours (AH) capacity each. During day, the power plant lights the house and during night, the converter takes over, drawing power from the batteries. 
Capital cost:  Rs. 2.5 lakh, inclusive of  subsidy of Rs.80,000 provided through the Tamil Nadu Energy Development Agency (TEDA). Net cost for consumer: Rs.1.7 lakh.
If someone is planning a study visit to Mr Suresh's  Kilpauk house, I would be interested.
This one can be taken up by OMR Greens.

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