The right system type depends entirely on how much load-shedding you deal with and whether backup power during outages matters to you. Here's the real difference between the three.
An on-grid system has no battery — it runs alongside grid power and exports any surplus generation for net billing credit. It's the lowest-cost option and has the fastest payback period, but it gives you zero backup power: when the grid goes down, so does your system, for safety reasons.
A hybrid system adds battery storage and a hybrid inverter that can switch between grid, solar, and battery power automatically. You get backup power during outages, plus the ability to store solar generation for evening use — which matters more now under the new net billing rules. Hybrid costs more upfront (batteries add 35–50% to total system cost) but suits most homes and businesses facing regular load-shedding.
An off-grid system has no grid connection at all — every bit of power comes from solar and battery storage. This is rare for homes in serviced areas (it needs a much larger battery bank to cover cloudy days) and is mainly used for remote sites with no grid access.
| On-Grid | Hybrid | Off-Grid | |
|---|---|---|---|
| Backup during outage | No | Yes | Yes |
| Relative cost | Lowest | Medium-High | Highest |
| Net billing export | Yes | Yes | N/A (no grid) |
| Best for | Lowest bill, minimal outages | Regular load-shedding, want backup | No grid access at all |
