1. Is there a grid?
If not, off-grid is the option, and the financial comparison is with diesel or extending the grid.
2. Do outages hurt you?
A grid-tied system stops during outages for safety. If outages matter, hybrid fits better.
3. When does your load occur?
Facilities running in daytime benefit directly from grid-tied. A large night load reduces direct use and needs a battery calculation against the night tariff.
4. Is the load a pump?
A pump usually runs with the sun through a VFD without batteries, sized from flow, head and daily water volume.