The same three choices we work with every day, in plain words.
Grid tied, no battery. Cheapest per unit, full PM Surya Ghar subsidy, but nothing runs during a cut.
Grid tied with a battery. Chosen appliances keep running during a cut; surplus is still exported.
Battery only, independent of the grid. No subsidy, highest cost, but no reliance on the supply.
Tell us your monthly bill - we size the plant, file the subsidy and handle net metering.