Solar and batteries in Girrawheen: what the local data shows

Where Girrawheen is

Girrawheen is 13 km north of the Perth CBD. Postcode 6064 covers Girrawheen, Alexander Heights, Koondoola and Marangaroo: about 10,758 occupied homes and 31,068 people at the 2021 Census. Kingsley next door has more batteries for its size (70 per 1,000 homes against 41 here).

What stands out in Girrawheen

• 25 new solar systems per 1,000 homes in the last 12 months, 39% below the Perth rate: fewer roofs are still getting their first system.
• 41 home batteries for every 1,000 homes since Jul 2025, 37% below the Perth rate.
• 33% of the postcode's solar went in between 2011 and 2015 (29% across Perth).
• 86% of homes are separate houses (78% across Perth), so most homes have a roof and switchboard of their own.

Batteries in Girrawheen since the federal rebate began

440 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 21.6 kWh, about the Perth average. Installs went from 15 in July 2025 to a high of 43 in April 2026, the same month as Perth as a whole. About 0.9% 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.

Girrawheen's solar story since 2001

421 systems went in before 2011. Then came 2012, the postcode's busiest year (731), during the first rush of rooftop solar; the quietest since was 2015. 2025 brought 239, 33% of that peak. 33% of its 6,156 systems went in between 2011 and 2015, against 29% across Perth. Many were 2 kW systems now past ten years old, so adding a battery to existing solar, or replacing an early system, comes up often (see a battery for existing solar). Systems grew from an average of 2 kW in 2011 to 9 kW in the last 12 months.

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

Girrawheen beside its neighbours

• Warwick, 3 km west: more batteries for its size, more new solar in the past year and fewer renters, with batteries of a similar size.
• Balcatta, 4 km south-west: more batteries for its size, more new solar in the past year and fewer separate houses, with batteries of a similar size.
• Mirrabooka, 4 km south-east: fewer batteries for its size, less new solar in the past year, fewer separate houses and more renters, with batteries of a similar size.
• Kingsley, 5 km north-west: more batteries for its size, more new solar in the past year and fewer renters, 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 9 kW system makes about 15,500 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 Girrawheen

A vetted installer covers postcode 6064, and you meet one at a time (how we choose them).

Nearby: Warwick · Balcatta · Mirrabooka · Kingsley · every suburb · Perth guide