Going All-Electric in Perth: Solar, Battery, Heat Pump and EV Charger

Gas prices in Western Australia are climbing. The direction of travel is clear: the future of the Perth home is electric. Solar and battery storage, heat pump hot water, and EV charging are the three big moves that transform how a household uses and pays for energy.

The smartest thing you can do is tackle all three together. Positive Energy Solutions can supply and install your solar and battery system, your heat pump hot water system, and your EV charger as a single coordinated project. Doing it this way costs less than coming back to do each one separately. One switchboard assessment, one installation mobilisation, one project managed from start to finish.

The induction cooktop can come whenever you are ready — it is just an appliance. Your system will be designed to handle it when you make the switch.

Why Doing It Together Costs Less

Every time a tradesperson comes to your home, there are fixed costs. These include mobilisation, time on site, switchboard inspection, and grid connection paperwork. When solar and battery, heat pump hot water, and EV charger are installed as separate projects, you pay those costs multiple times. When they are done together, you pay them once.

There are also design advantages. If you size a solar and battery system without knowing you are about to add a heat pump and EV charger, you are likely to undersize it for your actual future load. Getting everything on the table at once means the system is designed for your complete energy picture from day one. This gives you the right number of panels, the right battery capacity, and a switchboard that is ready for everything in one upgrade.

Positive Energy Solutions coordinates the full project. You deal with one company, not three.

Solar and Battery: The Foundation

Solar and battery is what makes everything else affordable. Every kilowatt-hour your panels generate is one less you buy from Synergy. When that generation covers your hot water system, your EV, and your household loads, the savings compound quickly.

The key when bundling solar and battery with a heat pump and EV charger is to size the system for your full electricity demand, not just your current usage. A heat pump hot water system and an EV charger both add meaningful load. We factor both into the system design from the start, so you have enough generation and storage to cover everything comfortably.

• Panel choice: Positive Energy Solutions installs SunPower P-series panels exclusively. These are TOPCon shingled-cell panels with a 30-year warranty covering product, performance, and labour. They are IEC 61701 maximum severity salt mist certified, which matters particularly for Perth’s coastal suburbs.
• Battery options: We work with Tesla Powerwall 3, SigEnergy SigenStor, Sungrow, Fronius GEN24 PLUS, BYD, and iStore. Your energy consultant will recommend the right battery for your system size, backup requirements, and budget.
• System sizing: we size for the complete picture. This covers current usage, heat pump load, EV charging requirements, and any other planned additions. See our guide: What Size Solar and Battery System Do I Need Perth 2026.

Heat Pump Hot Water: Eliminate Your Biggest Gas Load

Hot water is typically the largest gas load in a Perth home. Replacing a gas hot water system with a heat pump is the single most impactful gas-reduction move available. When it runs on solar generation, it costs very little to operate.

A heat pump hot water system works by extracting heat from the surrounding air, rather than generating heat directly. This makes it two to three times more efficient than a conventional electric element. Schedule it to run during your peak solar window, late morning to early afternoon, and you heat water with energy your panels are producing that would otherwise be exported to the grid.

Positive Energy Solutions supplies and installs the iStore heat pump hot water system. iStore is Australian-designed, widely installed across Perth, and has a strong track record in WA’s climate conditions.

• Scheduling: set your heat pump to run during peak solar hours. This way, you self-consume generation, rather than paying grid rates or exporting at the low DEBS off-peak rate.
• Gas cylinder or continuous flow? Both can be replaced. Your energy consultant will advise on the right iStore model for your household’s hot water demand.
• When done as part of a bundle: The switchboard assessment needed for solar and battery covers the heat pump at the same time. No second visit, no double-up on costs.

EV Charger: Charge from Your Own Solar

Once your solar and battery system is in place, an EV charger at home becomes one of the most cost-effective energy decisions you can make. Petrol costs are largely replaced by energy you generate yourself. You can charge directly from solar during the day, or draw from your battery in the evening.

Positive Energy Solutions supplies and installs a range of EV chargers. Where possible, we recommend matching your charger to your inverter and battery brand. Integrated systems share a single platform for energy management, solar diversion, and charging schedules. This gives you better monitoring and smarter control from one app.

Brand-Matched Chargers

• SigEnergy EV Charger: Integrates directly with the SigenStor system for seamless solar-aware charging management.
• Tesla Wall Connector: Native integration with the Tesla Powerwall 3 ecosystem. Ideal for Tesla vehicle owners with a Powerwall system.
• Fronius Wattpilot: Designed to work within the Fronius GEN24 PLUS ecosystem, with smart solar charging built in.
• iStore EV Charger: Works in conjunction with the iStore energy management platform.

Brand-Agnostic: Zappi

Some households have an inverter or battery brand without a matched charger. Others simply want a proven all-rounder. For them, the Zappi by myenergi is an excellent choice. The Zappi is built specifically around solar self-consumption. It diverts excess solar generation directly to your EV, before it would otherwise be exported to the grid at the low DEBS off-peak rate. It is compatible with any vehicle and any inverter or battery brand.

• Solar diversion: Zappi prioritises excess solar to your EV before exporting to the grid.
• Compatibility: Works with any EV, any inverter, any battery.

See our guide: EV Charging and Solar Perth 2026.

Induction Cooking: The Easy One

Induction cooking is the remaining gas load in most Perth homes. The good news is it is the simplest to deal with. An induction cooktop is just an appliance. You buy it, plug it in (or have it hardwired), and your existing solar and battery system handles the load without any design changes.

Positive Energy Solutions does not sell induction cooktops. But we design your system with the additional load in mind. Whether you make the switch at the same time as the rest of the project, or a few years later, your system is already equipped for it.

Modern induction cooktops heat faster than gas, are easier to clean, and produce no combustion byproducts. The main consideration is cookware. Induction requires magnetic-base pots and pans. Cast iron and most stainless steel work. Aluminium and copper do not. If your switchboard needs an upgrade for the rest of the project, your induction cooktop circuit can be included in that work at no extra mobilisation cost.

Your Switchboard: The One Thing People Forget

When you add solar and battery, a heat pump hot water system, and an EV charger to a home, you add significant new electrical load and multiple new circuits. The switchboard ties all of it together. It is the one piece of the electrification puzzle that catches people off guard, if it has not been assessed beforehand.

Older Perth homes, particularly those built before the 1990s, often have switchboards that are not equipped for the demands of a fully electrified home. Fuse-based boards, insufficient circuit capacity, or boards without adequate space for new circuits can all require upgrading, before installation can proceed safely.

The advantage of doing your solar and battery, heat pump, and EV charger as a single project is that the switchboard is assessed and upgraded once, covering all three. If each was done as a separate project, that assessment and any upgrade work would happen multiple times, at additional cost each time.

Positive Energy Solutions asks every customer to send photos of their switchboard before installation day. This lets us identify any upgrade requirements in advance, so there are no surprises on the day and no delays to commissioning. If an upgrade is needed, we scope it and include it in your project from the outset.

• Single assessment: One switchboard review covers solar inverter, battery, heat pump, and EV charger circuits all at once.
• No surprises on install day: We identify switchboard requirements upfront from your photos so everything is ready before the installation team arrives.
• Induction cooktop: If you are planning to add induction cooking later, the circuit can be included in the switchboard upgrade at no additional mobilisation cost while the work is already being done.

What Positive Energy Solutions Manages for You

Positive Energy Solutions is one of the few companies in Perth that can handle the full electrification bundle under one roof. When you come to us for solar and battery, heat pump hot water, and EV charger, you deal with a single company that coordinates everything. This covers system design, installation, grid connection, rebate applications, Synergy notifications, and commissioning.

• Solar and battery system — designed for your complete energy picture including heat pump and EV loads.
• iStore heat pump hot water — supply and installation, scheduled around your solar generation.
• EV charger — brand-matched or Zappi, supply and installation.
• Switchboard assessment and upgrade — one assessment covering all of the above.
• Rebate applications — CHBP, WA state battery rebate, Plenti no-interest loan, Synergy and Western Power notifications all handled for you.

Doing the three together is not just more convenient — it is more cost-effective. One project, one team, one result.

What This Looks Like on Your Energy Bills

A Perth household that completes the full electrification bundle, solar and battery, heat pump hot water, and EV charging, typically sees results across the board. Its gas bill is eliminated entirely. Its electricity bill is reduced substantially through solar self-consumption. Its petrol costs are largely replaced by self-generated power. The exact numbers depend on system size, usage patterns, and how well loads are scheduled around solar generation.

Your energy consultant will model the expected outcome based on your household specifically, so you have a clear picture of the return before you commit.

Related guides

• Adding a Battery to Your Existing Solar System in Perth: 2026 Costs, Rebates, and Inverter Compatibility Guide
• Best Solar Batteries for Perth Homes in 2026
• Is LFP Battery Chemistry Right for Perth Homes? A Closer Look at the BYD Battery-Box Premium HVM
• DC-Coupled vs AC-Coupled Solar Batteries: What Perth Homeowners Need to Know

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Frequently Asked Questions

Is it really lower-cost to do everything at once?

Yes, in most cases. When solar and battery, heat pump, and EV charger are installed together, you benefit from a single switchboard assessment, one installation mobilisation, and a system designed correctly for all three loads from day one. Doing them separately means paying site visit costs multiple times and potentially undersizing your solar system initially and needing to retrofit later.

What size battery do I need if I am also running a heat pump and EV charger?

More than you would for solar self-consumption alone. Both a heat pump hot water system and an EV charger add meaningful electricity demand, and if you want to cover those loads from stored solar energy your battery needs to be sized accordingly. Your Positive Energy Solutions energy consultant will model the full load picture. See also: What Size Solar and Battery System Do I Need Perth 2026.

Do I qualify for any rebates on this bundle?

The federal CHBP and WA state battery rebate apply to the battery component of your system. The Plenti no-interest loan can help fund the full bundle for eligible households. Positive Energy Solutions manages all rebate and finance applications as part of the project. See: Solar Rebates and Incentives WA 2026.

Can I add the EV charger later if I do not have an EV yet?

Yes. If you do not have an EV yet, we can design the solar and battery system with future EV charging in mind — ensuring the system is sized for that load and the switchboard is EV-charger-ready — and install the charger when you need it. The solar design conversation is the right time to flag your EV plans even if the car is still a year or two away.

What happens to my gas connection?

Once your gas hot water system is replaced with a heat pump and you switch your cooktop to induction, you can arrange to disconnect your gas supply entirely and remove the network access charge from your bill. Your energy consultant can advise on the timing and the process.

Ready to Go All-Electric?

Whether you are starting from scratch or already have solar and want to know what to add next, Positive Energy Solutions can put together a plan for the full transition. Solar and battery, heat pump hot water, and EV charger — all in one project, all managed by one team.

About the Author

Jason Wiktorowicz
Sales Manager, Positive Energy Solutions | Perth, WA

Jason has been at the centre of Western Australia’s energy transition for over a decade. As Orchestration Lead on Project Symphony — WA’s largest virtual power plant pilot — and Stream Lead on Project Encore, he worked directly with AEMO, Western Power and Energy Policy WA to shape how distributed energy resources connect and operate on the SWIS. That work included developing and rolling out CSIP-AUS, now mandatory for all new WA grid connections. He also led Emergency Solar Management (ESM), the first program of its kind in WA, VPP for Schools (VPP4S), which provided direct market benefits through Supplementary Reserve Capacity, and REBAR, the WA Residential Battery Rebate scheme.

His earlier career spanned Synergy, Infinite Energy and Curtin University’s Sustainability Policy Institute, where he co-authored peer-reviewed research on net-zero urban precincts, solar integration and peer-to-peer energy trading, published in the journal Urban Planning in 2018.

At Positive Energy Solutions, Jason leads sales with a focus on system design accuracy and long-term performance. Positive Energy Solutions installs solar and battery systems, EV chargers and heat pumps, and holds partner accreditations with Fronius, SigEnergy, iStore and SunPower. Connect with him on LinkedIn.