hey usofa,
visit http://www.solarbuzz.com/CompanyListings/Nepal.htm for the list of companies which provide solar energy services in Nepal.
I have 65W solar panel in my house and it cost around NRS45000 (installed in 1999). Good enough only for lighting the house, if you use color television it won't last long. But you can increase the capacity as per your need, i don't know the current price.

Thanks