On Grid or Off Grid ? Solar Hybrid? Batteries or No Batteries?
On Grid
If you already have mains power or are within 300mtrs of mains power, your situation lends it self to grid tie (Grid Interactive) solar, using the mains grid power and supplementing with solar during the day.
Most urban homes have a low chance of power outages and so batteries are not required .
Hybrid
The next step on from Grid tie is hybrid grid tie, which is using the mains power to run the larger loads in the house and supplementing with solar during the day as well as charging a bank of deep cycle batteries, using the battery power to supplement night time loads, or keep the battery power for emergencies so you will always have power for essential loads.
Batteries are only required if you require backup power or load shifting.
On a pure grid tie system batteries are not required .