Solar and batteries in Baldivis: what the local data shows

Where Baldivis is

Baldivis is 41 km south of the Perth CBD. Postcode 6171 covers Baldivis: about 12,397 occupied homes and 37,697 people at the 2021 Census. Wellard next door has more batteries for its size (120 per 1,000 homes against 115 here).

What stands out in Baldivis

• 85 new solar systems per 1,000 homes in the last 12 months, about twice the Perth rate: solar is still going on roofs here quickly.
• 16% of homes are owned outright, against 28% across Perth.
• 115 home batteries for every 1,000 homes since Jul 2025, about twice the Perth rate.
• A median age of 31, younger than Perth's 38.

Batteries in Baldivis since the federal rebate began

1,429 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 19.8 kWh (smaller than the Perth average of 21.8 kWh). Installs went from 56 in July 2025 to a high of 155 in April 2026, the same month as Perth as a whole. About 3.0% 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.

Baldivis's solar story since 2001

363 systems went in before 2011. The busiest year was 2021 (1,031), in the second wave of rooftop solar, and the quietest since 2011 was 2013. 2025 brought 795, 77% of that peak. Systems grew from an average of 2.1 kW in 2011 to 8 kW in the last 12 months.

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

Baldivis beside its neighbours

• Warnbro, 7 km west: fewer batteries for its size, less new solar in the past year and more renters, with batteries of a similar size.
• Wellard, 7 km north-east: bigger batteries, less new solar in the past year and more renters, with about as many batteries for its size.
• Bertram, 9 km north: fewer batteries for its size, less new solar in the past year and more renters, with batteries of a similar size.
• Port Kennedy, 9 km south-west: fewer batteries for its size, smaller batteries and less new solar in the past year, with a similar mix of homes.

Prices, rebates and solar output

Each kW of panels here makes about 1,700 kWh a year, so an 8 kW system makes about 13,450 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 Baldivis

A vetted installer covers postcode 6171, and you meet one at a time (how we choose them).

Nearby: Warnbro · Wellard · Bertram · Port Kennedy · every suburb · Perth guide