Solar and batteries in Ballajura: what the local data shows

Where Ballajura is

Ballajura is 13 km north of the Perth CBD. Postcode 6066 covers Ballajura: about 6,177 occupied homes and 18,459 people at the 2021 Census. Beechboro next door has more batteries for its size (81 per 1,000 homes against 63 here).

What stands out in Ballajura

• 18% of homes are rented, fewer than the 27% across Perth.
• Battery uptake is speeding up: the postcode's share of Perth's new batteries went from 0.7% in late 2025 to 0.9% in 2026.
• 94% of homes are separate houses (78% across Perth), so most homes have a roof and switchboard of their own.
• Larger households: 2.9 people on average (2.6 across Perth), which usually means more power used in the evening.

Batteries in Ballajura since the federal rebate began

387 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 21.7 kWh, about the Perth average. Installs went from 13 in July 2025 to a high of 56 in April 2026, the same month as Perth as a whole. The postcode's share of the city's new batteries rose from 0.7% in the second half of 2025 to 0.9% in 2026.

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

Ballajura's solar story since 2001

314 systems went in before 2011. Then came 2011, the postcode's busiest year (464), during the first rush of rooftop solar; the quietest since was 2015. 2025 brought 151, 33% of that peak. 32% of its 4,494 systems went in between 2011 and 2015, against 29% across Perth. Many were 2.2 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 2.2 kW in 2011 to 8.6 kW in the last 12 months.

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

Ballajura beside its neighbours

• Mirrabooka, 4 km south-west: fewer batteries for its size, less new solar in the past year, fewer separate houses and more renters, with batteries of a similar size.
• Girrawheen, 5 km west: fewer batteries for its size, less new solar in the past year, fewer separate houses and more renters, with batteries of a similar size.
• Beechboro, 5 km south-east: more batteries for its size, more new solar in the past year and more renters, with batteries of a similar size.
• Dianella, 6 km south-west: fewer batteries for its size, bigger batteries, less new solar in the past year, fewer separate houses and more renters.

Prices, rebates and solar output

Each kW of panels here makes about 1,700 kWh a year, so an 8.6 kW system makes about 14,550 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 Ballajura

A vetted installer covers postcode 6066, and you meet one at a time (how we choose them).

Nearby: Mirrabooka · Girrawheen · Beechboro · Dianella · every suburb · Perth guide