What shapes electrical work in Karrinyup
Built over decades
Rapid growth began in 1957, south of Karrinyup Road first, and the Mitchell Freeway reached Karrinyup Road in 1983 to 84. Houses range across several eras, many have two storeys, and most are brick and tile.
Large homes, mostly owner-occupied
At the 2021 Census, 87.0% of occupied homes were separate houses and 51.1% had four or more bedrooms. Only 18.2% were rented.
Solar and batteries in 6018
Postcode 6018, which Karrinyup shares with Innaloo and other neighbouring suburbs, has 7,592 small-scale solar systems on the Clean Energy Regulator's count, and 925 solar batteries recorded from July 2025 to September 2026.
Apartments arriving
Apartment towers on the north-east side of Karrinyup Shopping Centre are expected to be finished by 2027.
Adding a battery to a house that already has solar
Western Power's 2026 rules allow up to 30 kVA of solar and battery inverter capacity per home, but only 15 kVA on a single phase connection. So the first two questions are how much is already on the roof and whether the house is single or three phase.
Exports have limits too. A home system on the main networks can send up to 5 kW to the grid only under an agreement with the retailer. Without one, the cap is 1.5 kW, and it drops back to that whenever the system loses contact with the retailer.
Anything new or upgraded from 1 May 2026 must also support the newer grid communication standards and be able to be disconnected and reconnected remotely. Ask the installer to confirm the equipment meets that before you sign.
When the board is older than the panels
A 1960s or 1970s board may have rewireable fuses and no room for the extra breakers a battery needs. On Western Power's network, adding circuit capacity to an existing home means fitting a circuit breaker as the main switch, so a battery job can carry a board upgrade with it.
If a car charger is coming too, a 7 kW single phase unit is permitted on a standard connection, provided the contractor confirms the home's total load stays inside its supply limit.
Where we'd start in Karrinyup
We'd ask for one drawing that shows the panels already on the roof, the new battery, any charger and the switchboard, with the total inverter capacity written on it. If that number fits the single phase limit and the board has room, it's a simple job. If not, you'll know before anything is bought.
Want a specialist to sort it?
Tell us the job and your postcode. We match the licence-checked local electrician who does this kind of work, and they call you. No ring-around, and your number goes to them alone.