Solar Power

I heard Tata BP solar is good.Any other good brands? And there are two types one having cylindrical pipes which is around 27K rupees and other like box which is 33K rupees which one is good? You can also check some brands and price/feature comparison websites listed in the article here: http://indiahometips.com/buying-solar-water-heater.html

I need to replace my water heater, how do I find out if it is an electric water heater or a Solar Water Heater? Do you have big solar panels on your roof? If so, you probably have a solar heater. If it is electric, it will have to be plugged into an electrical outlet [...]