If you own an electric vehicle in Perth — or you’re planning to buy one — the latest Western Power changes could significantly improve the way your home handles EV charging, solar, and battery storage.
As of May 1st, 2026, new Flexible Inverter standards officially apply across the South West Interconnected System (SWIS). While the new rules introduce updated compliance requirements, they also create major opportunities for homeowners looking to install faster and smarter EV charging systems.
At Willex Electrical, we’ve spent more than 20 years helping Perth homeowners adapt to WA’s changing energy landscape. Here’s what the new regulations mean for your home and how they can benefit your EV charging setup.
Under the updated Western Power rules, eligible single-phase homes can now support a combined inverter capacity of up to 30kVA.
Previously, many Perth homes faced strict limitations when trying to combine:
This often created design restrictions and limited charging performance.
The new standards provide more flexibility for homeowners wanting a complete energy system that supports modern EV charging demands.
The increased inverter capacity allows many homeowners to install:
without the bottlenecks that previously affected system design.
For EV owners, this means you can now run a powerful 7kW EV charger alongside your solar and battery setup more efficiently than before.
At Willex Electrical, we design complete “whole-of-site” energy systems that balance your EV charger, solar generation, and battery storage to maximise performance and energy efficiency.
One of the biggest changes introduced with the May 1st update is the move toward Flexible Exports.
Some systems that do not support the new standards may be restricted to a fixed export limit of just 1.5kW.
For homeowners, this can reduce the value of your solar investment by limiting how much excess power your system can export to the grid.
To avoid this issue, modern systems should support:
This allows your system to intelligently adjust exports based on grid conditions rather than remaining permanently capped.
Modern EV chargers can now work together with your solar and battery system to improve energy usage throughout the day.
Willex Electrical installs grid-ready EV charging solutions including:
These smart chargers can automatically:
This helps homeowners increase self-consumption and reduce overall electricity costs.
In the past, many Perth homeowners upgraded to three-phase power to achieve faster EV charging speeds.
However, three-phase upgrades can often cost thousands of dollars depending on the property and network requirements.
Thanks to the new 30kVA flexibility, many homeowners can now achieve significantly faster charging performance on existing single-phase connections when paired with the right smart energy system.
Every home is different, which is why professional system design is critical before choosing an EV charger installation.
With more than 20 years of industry experience and a team of qualified electrical professionals, Willex Electrical helps homeowners across Perth navigate the latest EV charging and solar requirements.
We provide:
From Joondalup to Mandurah, we understand the unique requirements of WA homes and the local electricity network.
The May 1st 2026 changes are a major step forward for Perth homeowners looking to combine EV charging, solar, and battery storage more effectively.
Whether you’re installing your first EV charger or upgrading an existing system, choosing the right installer is essential for performance, compliance, and long-term reliability.
If you’re looking for expert Zappi EV charger installation in Perth, contact Willex Electrical today to discuss the best solution for your home.
