Is roof top solar PV system practical?

That sounds great but just how many homes have a south facing roof? I really don't understand why people want solar systems on the roof. In order to peak the power production the roof has to be facing at a perfect angle and also the pitch of the roof must be perfect. Then the people that live in the perfect home must have the money to afford the system. Just remember this. I don't care who the power company is they will never pay you the same or more amount per KW as they sell now. That would be very bad for the power company. They will pay less for the power and you, it will take a very long time to recoup the investment.

A lesson can be learned here from the solar systems that are installed in the United States. Only 8% of all the homes have a southern facing roof. Of that only 18% of the roofs are pitched perfect. Now what are the odds that these home owners have the money to invest in solar PV.

We have a better solution now. I just want to know what is wrong with taking a home or industrial site off the grid? Then you have solved the energy problem. Is there some kind of law that says you can't install an off the grid solar system in India. Between coal and those dirty diesels stand by generators just how many people in India get sick from the pollution? It is not about the size of the roof that matters it is about how much electric power is consumed by the home. For some reason people don't understand about one thing. People use electric power and it has nothing to do with how large a home really is.

Now for industrial sites it is different. The demand side of electric power is the problem. Next month India will be presented a family of products that reduces the demand side of energy. Just maybe this will help India's energy future.