Solar and batteries in South Perth: what the local data shows

Where South Perth is

South Perth is 3 km south of the Perth CBD. Postcode 6151 covers South Perth, Kensington: about 7,254 occupied homes and 17,226 people at the 2021 Census. Applecross next door has more batteries for its size (77 per 1,000 homes against 34 here).

What stands out in South Perth

• 19 new solar systems per 1,000 homes in the last 12 months, about half the Perth rate: fewer roofs are still getting their first system.
• 45% of homes are separate houses (78% across Perth), so more homes share a roof or need strata approval.
• 34 home batteries for every 1,000 homes since Jul 2025, about half the Perth rate.
• 39% of homes are rented, more than the 27% across Perth.

Batteries in South Perth since the federal rebate began

248 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 20.6 kWh (smaller than the Perth average of 21.8 kWh). Installs went from 10 in July 2025 to a high of 35 in April 2026, the same month as Perth as a whole. About 0.5% of Perth's new batteries go in here, much the same as when the rebate began.

Batteries a month, Jul 2025 to Aug 2026. August 2026 is still being registered, so it reads low.

South Perth's solar story since 2001

104 systems went in before 2011. The busiest year was 2020 (214), in the second wave of rooftop solar, and the quietest since 2011 was 2015. 2025 brought 119, 56% of that peak. Systems grew from an average of 2.3 kW in 2011 to 10.3 kW in the last 12 months.

Solar systems a year from 2011 (2026 to 31 August 2026); counts include replacements and small businesses.

South Perth beside its neighbours

• Como, 2 km south: more batteries for its size, more new solar in the past year, more separate houses and fewer renters, with batteries of a similar size.
• Victoria Park, 3 km east: more new solar in the past year and more renters, with about as many batteries for its size.
• Applecross, 4 km south-west: more batteries for its size, bigger batteries, more new solar in the past year, more separate houses and fewer renters.
• Carlisle, 5 km east: more batteries for its size, more new solar in the past year and more separate houses, with batteries of a similar size.

Prices, rebates and solar output

Each kW of panels here makes about 1,700 kWh a year, so a 10.3 kW system makes about 17,350 kWh. In STC zone 3, the federal rebates come to about $1,665 on 6.6 kW of solar and $3,663 on a 15 kWh battery (the battery rebate steps down on 1 January 2027). Prices follow the installer, not the suburb: Perth prices · WA rebates.

Getting a price in South Perth

A vetted installer covers postcode 6151, and you meet one at a time (how we choose them).

Nearby: Como · Victoria Park · Applecross · Carlisle · every suburb · Perth guide