Information on solar lighting

[VishalKarnik]

We are planning to place solar lighting in our Society (around 150 flats). We are located in India (Maharashtra). I have some basic queries regarding solar energy option. Any help (references etc.) are welcome.
My queries are
* What is the amount for solar installation?
* What is break even period for the amount?
* Is there any government subsidy available for this? If yes how much is it?
* How much time is required for installation of such system?
* what is maintenance cost of such a system? Is it too high?

thanks
Vishal.

[Mike90250]

* What is the amount for solar installation?

Varys depending on your local labor rates for roof and electrical work

* What is break even period for the amount?

Depends on how much you spend, vs how much you currently pay
about 7-20 years roughly, in the United States

* Is there any government subsidy available for this? If yes how much is it?

Check with your local officials

* How much time is required for installation of such system?

Skilled installers (4 people) can install a 10KW system in 2 days.

* what is maintenance cost of such a system? Is it too high?

Pure Grid Intertie solar:
wash dust off the panels every 60 days
replace inverter every 10 years @ $5,000 US

Battery based:
wash dust off the panels every 60 days
replace inverter every 10 years @ $5,000 US
add distilled water every month
inspect tighten battery cables every 6 months
replace battery bank every 7 years