Need suggestions on alternate sources of energy to pump water from borewell


We have a farmland which gets borewell water through 3 phase electricity.

In recent times, there has been a power problem in the area and we have not been getting electricity for morethan 4 to 5 hours per day which is causing an issue.

I am planning to look at options for alternative source of energy (Diesel engines or Solar based).

We have four borewells. We have borewells of depth 200 feet, with the water level being at 100ft.

Please let me know the cost of installation and maintenance for diesel based pumps and  cost of installation as well as the number of hours backup that can be provided by the solar based pumps.

Please also let me know if there is any reading material available on this online.