GADGET GURU
Q Is it time to go solar?
A Recouping the cost of solar installation is going to happen far more quickly today than it might have done a few years ago, and GaGu can’t see that changing any time soon. If you have the roof for it, it’s time. Of course, your specifics are going to be, er, specific, so let’s be broad. The average installation cost is around `4,65,000 for a system which generates around 3.5 kilowatts at peak – that’s cheaper than it was, and panel efficiency is slowly creeping up; look for 20% efficiency if you can afford it. Depending on weather, direction, and whatever
