Solar and batteries in Spearwood: what the local data shows

Where Spearwood is

Spearwood is 18 km south-west of the Perth CBD. Postcode 6163 covers Spearwood, Bibra Lake, Coolbellup, Hamilton Hill, Hilton, Kardinya, North Coogee, North Lake, O'Connor and Samson: about 21,996 occupied homes and 54,704 people at the 2021 Census. Murdoch next door has more batteries for its size (105 per 1,000 homes against 49 here).

What stands out in Spearwood

• 49 home batteries for every 1,000 homes since Jul 2025, 25% below the Perth rate.
• 31 new solar systems per 1,000 homes in the last 12 months, 25% below the Perth rate: fewer roofs are still getting their first system.
• Smaller households: 2.3 people on average (2.6 across Perth), so evening use is usually lower.
• 33% of homes are owned outright, against 28% across Perth.

Batteries in Spearwood since the federal rebate began

1,073 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 20.9 kWh, about the Perth average. Installs went from 26 in July 2025 to a high of 118 in April 2026, the same month as Perth as a whole. About 2.2% 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.

Spearwood's solar story since 2001

1,130 systems went in before 2011. Then came 2011, the postcode's busiest year (1,004), during the first rush of rooftop solar; the quietest since was 2015. 2025 brought 574, 57% of that peak. Systems grew from an average of 2.1 kW in 2011 to 9.9 kW in the last 12 months.

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

Spearwood beside its neighbours

• Coogee, 2 km south-west: more batteries for its size, more new solar in the past year, more separate houses and fewer renters, with batteries of a similar size.
• South Fremantle, 5 km north-west: more batteries for its size, smaller batteries and more new solar in the past year, with a similar mix of homes.
• Cockburn Central, 7 km east: more batteries for its size, more new solar in the past year, more separate houses and fewer renters, with batteries of a similar size.
• Murdoch, 7 km north-east: more batteries for its size, bigger batteries, more new solar in the past year, more separate houses and fewer renters.

Prices, rebates and solar output

Each kW of panels here makes about 1,700 kWh a year, so a 9.9 kW system makes about 16,600 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 Spearwood

A vetted installer covers postcode 6163, and you meet one at a time (how we choose them).

Nearby: Coogee · South Fremantle · Cockburn Central · Murdoch · every suburb · Perth guide