Separate savings from backup
A conventional grid-connected solar system supplies daytime energy but normally shuts down when the grid fails. Panels can still produce DC electricity in sunlight, so shutdown does not make the equipment safe to touch. A backup requirement needs a design that supports isolated operation, suitable storage and defined essential loads.
- Ask what works during a power cut, not just how many panels are included.
- Request written limits for backup output and supported appliances.
Build your requirement first
INGAA planning checklist: bring recent bills, list outages and identify the equipment that matters most. A home study area, shop billing counter and agricultural pump have different priorities. Ask the designer to explain normal operation, low-sunlight operation and grid failure separately.
- On-grid: discuss daytime use and the applicable export arrangement.
- Hybrid: verify the exact inverter, battery and backup-circuit design.
- Off-grid: plan energy needs through poor weather, not only a sunny day.
Check your understanding
Will ordinary on-grid solar necessarily run your appliances during a blackout?
Official and manufacturer links
Links checked on 7 October 2026. These websites, and scheme rules, can change.