Grid-Tie vs Off-Grid vs Hybrid Solar: Which Suits You?

There are three main ways to set up solar. They differ in cost, complexity and what happens when the grid goes down.

1. Grid-tie

Panels feed an inverter connected to the grid. You use solar first, and the rest is exported.

• Cheapest per kW.
• Shuts down in a blackout for safety, even in full sun.

2. Off-grid

No grid connection. Solar charges batteries, and an inverter runs your loads.

• Needs a battery and usually a generator.
• Must be sized for winter and cloudy days.
• Suits remote blocks and sheds far from the grid.

3. Hybrid

Grid-connected with a battery. Solar charges the battery, and the battery runs things in the evening or in a blackout (if set up for backup).

• More expensive than grid-tie.
• Not all hybrids give blackout backup. Check.

4. Comparing

5. Rules

Grid-connected and hybrid systems must be installed by an accredited installer and approved by your network.

6. Quick summary

• Grid-tie: cheapest, no blackout power.
• Off-grid: independent, needs good design.
• Hybrid: grid plus battery, blackout backup if specified.

In Australia, any work on 240V AC wiring, including connecting an inverter, battery or solar system to a switchboard or fixed wiring, must be done by a licensed electrician.

← Back to all guides