Solar and batteries in Warnbro: what the local data shows

Where Warnbro is

Warnbro is 44 km south of the Perth CBD. Postcode 6169 covers Warnbro, Safety Bay, Shoalwater and Waikiki: about 13,350 occupied homes and 35,317 people at the 2021 Census. Baldivis next door has more batteries for its size (115 per 1,000 homes against 50 here).

What stands out in Warnbro

• Battery uptake is speeding up: the postcode's share of Perth's new batteries went from 1.3% in late 2025 to 1.5% in 2026.
• On the edge of the city, 44 km south of the CBD.
• 50 home batteries for every 1,000 homes since Jul 2025, 23% below the Perth rate.
• 36% of the postcode's solar went in between 2011 and 2015 (29% across Perth).

Batteries in Warnbro since the federal rebate began

671 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 18.8 kWh (smaller than the Perth average of 21.8 kWh). Installs went from 24 in July 2025 to a high of 67 in March 2026, 1 month before Perth's busiest month (April 2026). The postcode's share of the city's new batteries rose from 1.3% in the second half of 2025 to 1.5% in 2026.

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

Warnbro's solar story since 2001

689 systems went in before 2011. Then came 2011, the postcode's busiest year (1,118), during the first rush of rooftop solar; the quietest since was 2025. 2025 brought 316, 28% of that peak. 36% of its 9,561 systems went in between 2011 and 2015, against 29% across Perth. Many were 2.1 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 2.1 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.

Warnbro beside its neighbours

• Port Kennedy, 4 km south: more batteries for its size, more new solar in the past year and fewer renters, with batteries of a similar size.
• Baldivis, 7 km east: more batteries for its size, more new solar in the past year and fewer renters, with batteries of a similar size.
• Rockingham, 7 km north: fewer batteries for its size, less new solar in the past year, fewer separate houses and more renters, with batteries of a similar size.
• Secret Harbour, 8 km south: 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 an 8.6 kW system makes about 14,500 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 Warnbro

A vetted installer covers postcode 6169, and you meet one at a time (how we choose them).

Nearby: Port Kennedy · Baldivis · Rockingham · Secret Harbour · every suburb · Perth guide