Sunday, Jun 05, 2005
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Indrani Dutta
KOLKATA: A new chapter in spreading the reach of telecommunications has been opened up with the use of renewable energy systems to power relay towers in remote areas. Sources said that one of the telecom majors had started operating mobile repeater and relay stations, which harness solar and wind energy with the wind turbines foisted on the telecom towers. The two towers, perhaps the first of their kind in India, are located in the Ranigunj-Asansol coal belt, according to sources. The area was not electrified and it would have cost the company almost double the amount that it was now spending to draw conventional power from the nearest source. The hybrid systems, involving solar photovoltaic (SPV) systems and wind energy installations for this particular application, have been developed by the Kolkata-based storage battery major, Exide Industries, which assures uninterrupted supply of 2.8 kilowatt of power daily. A master control installed at the site acts as a voltage stabiliser, while a generator has been kept as a back-up for charging the batteries in case of emergency. Sources said that the system, installed nearly two months ago, was running as an unmanned, automated system with the master control programmed to inform the telecom major of the power supply position at site so that signalling was not disrupted easily. Sources said that these power packs, priced at about Rs. 9 lakh each, could be used not only for energising relay and repeater towers involving CDMA and GSM technology but also for making available basic telecom facilities in remote areas at affordable cost.
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