Tesla solar inverters in Perth: what you're actually choosing

Tesla does not sell a standalone solar inverter in Australia. It sells a battery with one inside. If you are looking for a Tesla inverter in Perth, the product you are weighing is the Powerwall 3. Its integrated inverter, up to 11.04 kW, takes solar strings directly. That makes it a battery decision as much as an inverter one, and it has a WA rebate consequence to know about first.

Solar Battery Perth does not sell any of this. We compare, and installers quote the actual price.

What does the Powerwall 3's inverter do?

It takes the place of a separate solar inverter. The built-in inverter accepts solar strings directly (three MPPT inputs, the trackers that each take a run of panels, up to 20 kW of solar), so on a new build it replaces the solar inverter line on your quote. One box does the conversion, the storage and the backup switching, with grid-outage transfer in around 20 milliseconds. For a WA buyer, two things matter:

1. Rebate eligibility. WA's battery scheme qualifies systems through inverters on Synergy's Supported Solutions List. The Powerwall 3's integrated inverter is on the list but not approved for the scheme, and it can't be swapped for one that is. A Powerwall 3 system is not eligible for the WA rebate. On an eligible system the scheme is worth up to $1,300.

2. Retrofits. If you already have solar, the integrated inverter can overlap with the one on your roof. Under WA's current compliance framework, adding equipment to an existing system can mean the whole site has to meet today's requirements, so settle how the Powerwall 3 connects to your existing solar before you sign, not on install day.

What is the other common path in Perth?

This WA path pairs a separate hybrid inverter on Synergy's list with the battery you choose. That route keeps rebate eligibility and brand flexibility on the battery side, with a matched DC-coupled pairing; the trade-off is a two-part system rather than one box. Our battery comparisons put the pairings side by side, and the eligibility guide shows the eligibility status of any model before you commit.

So which way?

The Powerwall 3 path suits homes where whole-home backup and the integrated ecosystem are the priority, and rebate eligibility is not. A separate SSL-listed hybrid suits homes where rebate eligibility is part of the budget. Solar Battery Perth's battery matcher weighs both routes against your actual usage.