On this page
01. How each works02. Why on-grid solar goes off in a power cut03. For security systems04. FAQ
On-grid (grid-tied) solar reduces your bill but switches off during a power cut for safety, so it gives no backup. Hybrid systems combine solar, batteries and the grid, and keep chosen circuits running in an outage. Off-grid systems run entirely on solar and batteries (often with a generator), with no grid connection.
Key takeaways
- On-grid: lower bills, no backup in outages.
- Hybrid: solar + battery + grid; backup for essential loads.
- Off-grid: independent, needs larger batteries and careful sizing.
- For security backup, hybrid or dedicated battery backup is what works.
01How each works
| On-grid | Hybrid | Off-grid | |
|---|---|---|---|
| Grid connection | Yes | Yes | No |
| Batteries | No | Yes | Yes (larger) |
| Works in a power cut | No: shuts down for safety | Yes, for backed-up circuits | Yes |
| Main benefit | Lower bills | Lower bills + backup | Independence where there's no grid |
02Why on-grid solar goes off in a power cut
03For security systems
Security equipment is a small, constant load, ideal for battery backup. A hybrid system (or a dedicated battery backup) keeps CCTV, fences, gates and the network running. See solar backup for security systems and the 5kW hybrid kit.
04Frequently asked questions
Does solar work during a KPLC outage?
Only with batteries (hybrid or off-grid). A grid-tied system without batteries shuts down in an outage.
Is hybrid solar worth it?
Where outages are common and you need backup, yes: it gives both savings and backup for essential loads.
Can I add batteries to an on-grid system later?
Sometimes, with a compatible (hybrid) inverter or an added battery inverter. It needs assessment.
