Solar Energy In India

Why do we (indians) are less inclined to use Solar Energy.
& what is the eco-friendliness of solar cells? does it pollute the environment much?
we had a Solar Cooker, since '91, & we've used it long. but we dont use it since '98, after the death of my father.
recently, we got a Solar Water heater installed, & now, almost 24 hours we get hot water. & since we use sterilised (boiled) water, geting already hot water for boiling has also decreased our LPG consumption till some extent.

lack of knowledge and awareness
high initial investment
no serious step taken by govt.
not only solar energy in india we scarsly use any renewable resource of energy
spain has its 40% electricity production frm wind energy