Solar and batteries in Port Kennedy: what the local data shows

Where Port Kennedy is

Port Kennedy is 48 km south of the Perth CBD. Postcode 6172 covers Port Kennedy: about 4,488 occupied homes and 13,477 people at the 2021 Census. Baldivis next door has more batteries for its size (115 per 1,000 homes against 78 here).

What stands out in Port Kennedy

• On the edge of the city, 48 km south of the CBD.
• 22% of homes are owned outright, against 28% across Perth.
• 94% of homes are separate houses (78% across Perth), so most homes have a roof and switchboard of their own.
• 35% of the postcode's solar went in between 2011 and 2015 (29% across Perth).

Batteries in Port Kennedy since the federal rebate began

349 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 18 kWh (smaller than the Perth average of 21.8 kWh). Installs went from 14 in July 2025 to a high of 37 in February 2026, 2 months before Perth's busiest month (April 2026). About 0.7% 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.

Port Kennedy's solar story since 2001

248 systems went in before 2011. Then came 2012, the postcode's busiest year (470), during the first rush of rooftop solar; the quietest since was 2015. 2025 brought 160, 34% of that peak. 35% of its 3,951 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 9 kW in the last 12 months.

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

Port Kennedy beside its neighbours

• Secret Harbour, 3 km south: more batteries for its size, more new solar in the past year and fewer renters, with batteries of a similar size.
• Warnbro, 4 km north: fewer batteries for its size, less new solar in the past year and more renters, with batteries of a similar size.
• Baldivis, 9 km north-east: more batteries for its size, bigger batteries and more new solar in the past year, with a similar mix of homes.
• Rockingham, 11 km north: 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 1,750 kWh a year, 5% more than in the Perth CBD, so a 9 kW system makes about 15,550 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 Port Kennedy

A vetted installer covers postcode 6172, and you meet one at a time (how we choose them).

Nearby: Secret Harbour · Warnbro · Baldivis · Rockingham · every suburb · Perth guide