Solar and batteries in Bertram: what the local data shows

Where Bertram is

Bertram is 33 km south of the Perth CBD. Postcode 6167 covers Bertram, Anketell, Calista, Casuarina, Kwinana Beach, Mandogalup, Medina, Orelia, Parmelia, Postans, The Spectacles and Wandi: about 9,994 occupied homes and 28,476 people at the 2021 Census. Wellard next door has more batteries for its size (120 per 1,000 homes against 69 here).

What stands out in Bertram

• 62 new solar systems per 1,000 homes in the last 12 months, about 1.5 times the Perth rate: solar is still going on roofs here quickly.
• 20% of homes are owned outright, against 28% across Perth.
• 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.
• 91% of homes are separate houses (78% across Perth), so most homes have a roof and switchboard of their own.

Batteries in Bertram since the federal rebate began

686 batteries went in across the postcode from July 2025 to 31 August 2026, averaging 21.3 kWh, about the Perth average. Installs went from 30 in July 2025 to a high of 74 in April 2026, the same month as Perth as a whole. 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.

Bertram's solar story since 2001

373 systems went in before 2011. The busiest year was 2021 (615), in the second wave of rooftop solar, and the quietest since 2011 was 2015. 2025 brought 510, 83% of that peak. Systems grew from an average of 2 kW in 2011 to 7.8 kW in the last 12 months.

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

Bertram beside its neighbours

• Wellard, 2 km south-east: more batteries for its size, more new solar in the past year and fewer renters, with batteries of a similar size.
• Baldivis, 9 km south: more batteries for its size, more new solar in the past year and fewer renters, with batteries of a similar size.
• Rockingham, 11 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.
• Warnbro, 13 km south-west: fewer batteries for its size, smaller batteries, less new solar in the past year and fewer renters, with a similar mix of homes.

Prices, rebates and solar output

Each kW of panels here makes about 1,700 kWh a year, so a 7.8 kW system makes about 13,250 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 Bertram

A vetted installer covers postcode 6167, and you meet one at a time (how we choose them).

Nearby: Wellard · Baldivis · Rockingham · Warnbro · every suburb · Perth guide