Home EV charging in WA: everything you need to know

Charging an EV at home in Perth costs a fraction of what you'd pay in public, and the price you land on depends almost entirely on when you plug in. On Synergy's standard A1 flat rate, a mid-size EV costs about 33.26c/kWh to charge, roughly $5.99 per 100 km driven. Move to the EV Add-On tariff and charge overnight, and that drops to about 19.92c/kWh, near $3.59 per 100 km. Charge from your own solar surplus in the middle of the day and the real cost falls to around 2c/kWh: the export credit you give up by using the power yourself instead of selling it back to the grid.

EV sales in WA keep climbing. If you've bought one, or you're about to, a home charger pays for itself quickly, especially if you're a solar owner who can shift most charging into daylight hours. No more public-charger queues, and your running costs drop well below what you'd pay on the road.

Why is home charging so much cheaper than public charging?

Home charging beats public charging on almost every measure:

• Convenience: wake up to a full battery every morning.
• Cost: home electricity, on any tariff, is cheaper than a public charger.
• Time: charge overnight while you sleep, or during the day if you're home.
• Solar integration: charge from your own surplus solar for around 2c/kWh, the export credit you forgo, well below any grid rate.

What does it actually cost per kWh?

Based on 18 kWh per 100 km, a working figure inside the 15-20 kWh/100km range typical for a mid-size EV. Home rates use Synergy's current A1 flat rate and EV Add-On time-of-use rates.

The solar row isn't really free. It reflects the roughly 2c/kWh export credit you give up by using the power yourself in the 9am-3pm window instead of feeding it back to the grid.

Public AC and DC fast chargers cost more per kWh than any of the home options above, often by a wide margin, and pricing varies a lot between networks and providers. Worth checking current rates before you plan a trip around them, but for everyday driving they're not where the savings live.

What are the different EV charging levels?

Level 1: standard power point (2.4 kW)

• What it is: your regular household outlet.
• Speed: 10-15 km range per hour.
• Best for: PHEVs, occasional short-range EVs.
• Cost: no hardware cost, uses an existing power point.

Level 2: dedicated EV charger (7.4-22 kW)

• What it is: a purpose-built wall-mounted charger.
• Speed: 40-120 km range per hour.
• Best for: most EV owners.
• Cost: typically $1,250-3,000 for the unit and a standard installation, depending on the unit and your switchboard.

Level 3: DC fast charging (50 kW+)

• What it is: commercial rapid chargers.
• Speed: 200-500 km range per hour.
• Best for: public charging, road trips.
• Cost: not suitable for home installation.

Which home EV charger should you buy?

Almost every home charger sold in Perth is 7.4 kW on single-phase supply, or up to 22 kW if you have three-phase. What separates them is how well they follow your solar, not how fast they charge. In short:

• Zappi by myenergi: reads solar surplus through a CT clamp at the switchboard, so it works with any inverter brand. The default pick for a solar home.
• Tesla Wall Connector: the value option, and it charges any EV, not just a Tesla. Native solar matching is narrower than that though: it needs a Tesla car and a Powerwall together, so a Powerwall owner driving something else still needs third-party software to follow the sun.
• Fronius Wattpilot: talks directly to a Fronius inverter for solar matching. Much less compelling if your inverter is another brand.
• Evnex E2: the cheapest route into solar diversion over OCPP, with built-in load management.

Current unit prices, installation costs, warranty terms and the full OCPP comparison live in one place: best home EV chargers for Perth in 2026. That guide is kept current, so it's the figure to quote rather than anything you find here.

How does Synergy's EV Add-On tariff work?

Synergy's EV Add-On plan is a time-of-use tariff built around EV owners. The cheapest window sits in the middle of the day, not overnight, so it pays to know the order:

• Super off-peak (9am-3pm): 8.85c/kWh. The cheapest window on the plan, handy if you can charge from the grid during the day.
• Overnight (11pm-6am): 19.92c/kWh. This is when most EV owners actually charge, since it doesn't depend on being home during the day. It costs more than super off-peak but is still around 40% cheaper than the A1 flat rate.
• Off-peak (9pm-11pm and 6am-9am): 24.34c/kWh.
• Peak (3pm-9pm): 55.33c/kWh. The window to avoid.

The EV Add-On plan also carries a higher daily supply charge than the standard A1 plan, so it only pays off if you can genuinely shift charging away from the peak window. A smart charger with scheduling makes that automatic.

Who should use it?

The EV tariff suits you if:

• You can charge overnight or in the middle of the day (most EV owners can manage one or the other).
• You have a smart charger with scheduling.
• Your general household usage doesn't climb during the 3pm-9pm peak window.

What do you need to sign up?

• Smart meter installation, free from Synergy.
• A compatible EV charger with scheduling.
• At least one registered electric vehicle.

How much can you save charging an EV from solar?

Solar and EV charging together is where the real savings stack up. Take a household driving 15,000 km a year: at 18 kWh per 100 km, that's 2,700 kWh of charging annually. Here's what that costs on each option:

• A1 flat rate, no solar: about $898/year.
• EV Add-On, overnight only: about $538/year.
• Surplus solar, fully covered: about $54/year in forgone export credit.

Most households land somewhere between the solar figure and the EV Add-On figure: a mix of daytime solar charging when the sun's out, topped up on the overnight rate the rest of the time. Run your own numbers through our Savings Calculator once you know your driving pattern.

How smart chargers handle it automatically

Modern EV chargers, like the Zappi, can automatically:

• Detect surplus solar generation.
• Adjust charging speed to match available solar.
• Switch to grid power when clouds pass.
• Resume solar charging when the sun returns.

That means most of your driving can run on your own rooftop solar, charged for around 2c/kWh, not the grid rate. If you're planning a new solar system with an EV in mind, size it properly first: our guide to sizing solar for an EV walks through how many extra panels the load adds.

What do you need to install a home EV charger?

Electrical considerations

Before installing a home charger, think about a few things.

Single-phase vs three-phase

Most WA homes have single-phase power, which supports chargers up to around 7.4 kW, enough to fully charge most EVs overnight.

Switchboard capacity

A licensed electrician will assess:

• Available capacity on your switchboard.
• Whether any upgrades are needed.
• Circuit-breaker requirements.
• Cable runs to the charging location.

Where should you put the charger?

A few factors to weigh:

• Proximity to switchboard: shorter cable runs keep the cost down.
• Vehicle parking position: easy access to the charge port.
• Weather protection: undercover locations are best.
• Future needs: will you add a second EV?

What does installation actually involve?

Timeline

1. Site assessment (1-2 days): electrician visits and provides a quote.
2. Order and permit (1-2 weeks): charger ordered, permit assessed if required.
3. Installation (half day): charger mounted and wired.
4. Testing and handover (1 hour): system checked, app set up.

Typical costs

These are indicative ranges. Your electrician's quote, based on your specific switchboard and cable run, is the number that matters.

Common questions about home EV charging

Can I use a regular power point?

Yes, but it's not ideal for daily use:

• Very slow (10-15 km range per hour).
• May overload older circuits.
• Not designed for sustained high loads.
• No smart features or scheduling.

Do I need a permit?

It depends on your specific installation, your existing switchboard, and the charger you choose. There's no blanket rule that covers every WA home. A licensed electrician assesses this as part of your quote and will tell you exactly what's needed before work starts.

Will it increase my electricity bill?

Your bill will go up, but you come out ahead overall. For the 2,700 kWh a year a typical EV needs, expect somewhere between about $54/year (charging almost entirely from solar surplus) and about $898/year (charging on the flat A1 rate with no solar), with most households on the EV Add-On overnight rate landing around $538/year. Set that against what you're not spending on petrol: fuel, servicing, and rego for a petrol car add up year-round, and EV charging comes in well below that on a per-kilometre basis. Run your own comparison with our Savings Calculator.

Can I charge in the rain?

Yes. EV charging cables and connectors are built for outdoor use and are weather-sealed by design. Ingress-protection ratings differ by product, so check the specific rating for the charger you're buying, and have a licensed electrician confirm the installation is suitable for its outdoor location.

How do you get started?

Here's what to do:

1. Work out your needs: single or three-phase? Smart features?
2. Get quotes: compare at least three installers.
3. Check rebates: some states offer EV-charger incentives.
4. Book installation: choose a licensed electrician.
5. Set up smart features: schedule charging, switch on solar integration.

If you're weighing a battery alongside the EV charger, our guide to combining solar, battery, and EV charging covers how the three work together.

Get free quotes from trusted EV-charger installers in Perth, or use our Savings Calculator to see how much you could save with an EV.

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Last updated: August 2026. Prices and tariffs are indicative and subject to change. Always verify current rates with Synergy.

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