I am eagerly waiting for erecting solar system for my houase @ Trichy, Tamilnadu where we are having sun power for more than 10 monthes in a year. If any body sugest me that erection of solar system is economical than regulat power supply,in long run, and what will be the cost for a building of 1000 sq.ft and where to get the subsidy for that etc. I am a retd. person aged 68 yrs and willing to provide solar system before my demice rather than buying another house. Kindly advice with all details to my email id jambu59@rediffmail.com which will be very much thankfull and appreciable. Early advice is very much appreciated.