Question 1

Is a home battery worth it in Perth?

Accepted Answer

For most Perth homes, yes — since the federal battery discount launched, payback periods have dropped to 4–6 years against a 10-year warranty. With DEBS feed-in rates as low as 2–10c/kWh, storing your excess solar to use at night beats exporting it. Batteries also provide blackout protection and VPP income options.

Question 2

Which battery is best: Tesla Powerwall 3 or Sigenergy SigenStor?

Accepted Answer

Powerwall 3 (13.5kWh, $11,990 installed) wins on whole-home backup power and app polish; SigenStor (from 8kWh, $7,490 installed) wins on modularity, entry price and built-in DC EV-charging expansion. For most homes wanting one unit, choose Tesla; for staged growth or EV integration, choose Sigenergy. We install both and quote them side by side.

Question 3

Can I add a battery to my existing solar system?

Accepted Answer

Yes. AC-coupled batteries such as the Alpha ESS SMILE5 or Tesla Powerwall 3 retrofit to any existing solar system regardless of brand or age — no inverter replacement needed. Retrofits qualify for the federal battery discount and are usually installed in one day.

The Perth battery superstore

Tesla Powerwall 3

Sigenergy SigenStor

Sungrow SBH Stack

Fronius Reserva

BYD Battery-Box Premium HVM

GoodWe Lynx Home F G2

iStore Energy Storage System

Alpha ESS SMILE5

Not sure which battery fits your home?

Battery storage in Perth